{"id":11719,"date":"2026-07-23T06:31:55","date_gmt":"2026-07-23T06:31:55","guid":{"rendered":"https:\/\/michemicals.com\/?p=11719"},"modified":"2026-07-23T06:39:51","modified_gmt":"2026-07-23T06:39:51","slug":"muc-do-thay-the-cmc","status":"publish","type":"post","link":"https:\/\/michemicals.com\/vi\/muc-do-thay-the-cmc\/","title":{"rendered":"M\u1ee9c \u0111\u1ed9 thay th\u1ebf CMC (DS 0,65\u20130,9): C\u00e1ch DS quy\u1ebft \u0111\u1ecbnh kh\u1ea3 n\u0103ng gi\u1eef n\u01b0\u1edbc, \u0111\u1ed9 nh\u1edbt v\u00e0 \u0111\u1ed9 h\u00f2a tan"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"11719\" class=\"elementor elementor-11719\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-30ae0bfd elementor-section-full_width elementor-section-height-min-height elementor-section-height-default elementor-section-items-middle\" data-id=\"30ae0bfd\" data-element_type=\"section\" data-e-type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1973073c\" data-id=\"1973073c\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-6b2debd7 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6b2debd7\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-inner-column elementor-element elementor-element-2d926776\" data-id=\"2d926776\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-27d5ab17 elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"27d5ab17\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">CMC Degree of Substitution (DS 0.65\u20130.9): How DS Determines Water Retention, Viscosity &amp; Solubility<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4c2b451c elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"4c2b451c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5f0564bb elementor-align-center elementor-widget elementor-widget-post-info\" data-id=\"5f0564bb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-8bf6eee elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t<a href=\"https:\/\/michemicals.com\/vi\/author\/protizerr-com\/\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-far-user-circle\" viewBox=\"0 0 496 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M248 104c-53 0-96 43-96 96s43 96 96 96 96-43 96-96-43-96-96-96zm0 144c-26.5 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class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-calendar\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M12 192h424c6.6 0 12 5.4 12 12v260c0 26.5-21.5 48-48 48H48c-26.5 0-48-21.5-48-48V204c0-6.6 5.4-12 12-12zm436-44v-36c0-26.5-21.5-48-48-48h-48V12c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v52H160V12c0-6.6-5.4-12-12-12h-40c-6.6 0-12 5.4-12 12v52H48C21.5 64 0 85.5 0 112v36c0 6.6 5.4 12 12 12h424c6.6 0 12-5.4 12-12z\"><\/path><\/svg>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\t<time>Th\u00e1ng 7 23, 2026<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-028c855 elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<svg aria-hidden=\"true\" 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data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-6531d86f e-con-full e-flex e-con e-child\" data-id=\"6531d86f\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-160e79e1 elementor-widget elementor-widget-theme-post-featured-image elementor-widget-image\" data-id=\"160e79e1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"theme-post-featured-image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution.webp\" class=\"attachment-large size-large wp-image-11722\" alt=\"CMC Degree of Substitution\" srcset=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution.webp 960w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution-300x188.webp 300w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution-768x480.webp 768w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution-18x12.webp 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" title=\"\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-55fba6c0 elementor-widget elementor-widget-heading\" data-id=\"55fba6c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Introduction<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-12ea18ad elementor-widget elementor-widget-text-editor\" data-id=\"12ea18ad\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>CMC&#8217;s degree of substitution (DS 0.65\u20130.9) directly determines three performance parameters: <strong>water retention<\/strong>, <strong>viscosity<\/strong>, and <strong>solubility<\/strong>. DS counts the average number of hydroxyl groups on each anhydroglucose unit replaced by carboxymethyl (\u2013CH\u2082COONa) groups. Each substituted group ionizes in water, creating a negatively charged polyelectrolyte chain that binds water through ion-dipole interactions and extends the chain through electrostatic repulsion.<\/p><p><strong>Water retention<\/strong> rises with DS: more carboxylate groups immobilize water in hydration shells and form a denser gel network resisting evaporation and substrate suction. <strong>Viscosity<\/strong> increases with DS at equal molecular weight and concentration, because greater charge density extends the polymer coil and enlarges hydrodynamic volume. <strong>Solubility<\/strong> follows a threshold \u2014 DS \u22650.7 achieves rapid cold-water dissolution with \u22640.3% insoluble residue, while DS &lt;0.7 leaves residual crystalline cellulose domains that hydrate slowly.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-66bff949 elementor-toc--minimized-on-tablet elementor-widget elementor-widget-table-of-contents\" data-id=\"66bff949\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;exclude_headings_by_selector&quot;:[],&quot;no_headings_message&quot;:&quot;No headings were found on this page.&quot;,&quot;headings_by_tags&quot;:[&quot;h2&quot;,&quot;h3&quot;,&quot;h4&quot;,&quot;h5&quot;,&quot;h6&quot;],&quot;marker_view&quot;:&quot;numbers&quot;,&quot;minimize_box&quot;:&quot;yes&quot;,&quot;minimized_on&quot;:&quot;tablet&quot;,&quot;hierarchical_view&quot;:&quot;yes&quot;,&quot;min_height&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;min_height_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"table-of-contents.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__header\">\n\t\t\t\t\t\t<h4 class=\"elementor-toc__header-title\">\n\t\t\t\tTable of Contents\t\t\t<\/h4>\n\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--expand\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__66bff949\" aria-expanded=\"true\" aria-label=\"Ouvrir la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-down\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M207.029 381.476L12.686 187.132c-9.373-9.373-9.373-24.569 0-33.941l22.667-22.667c9.357-9.357 24.522-9.375 33.901-.04L224 284.505l154.745-154.021c9.379-9.335 24.544-9.317 33.901.04l22.667 22.667c9.373 9.373 9.373 24.569 0 33.941L240.971 381.476c-9.373 9.372-24.569 9.372-33.942 0z\"><\/path><\/svg><\/div>\n\t\t\t\t<div class=\"elementor-toc__toggle-button elementor-toc__toggle-button--collapse\" role=\"button\" tabindex=\"0\" aria-controls=\"elementor-toc__66bff949\" aria-expanded=\"true\" aria-label=\"Fermer la table des mati\u00e8res\"><svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-chevron-up\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M240.971 130.524l194.343 194.343c9.373 9.373 9.373 24.569 0 33.941l-22.667 22.667c-9.357 9.357-24.522 9.375-33.901.04L224 227.495 69.255 381.516c-9.379 9.335-24.544 9.317-33.901-.04l-22.667-22.667c-9.373-9.373-9.373-24.569 0-33.941L207.03 130.525c9.372-9.373 24.568-9.373 33.941-.001z\"><\/path><\/svg><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<div id=\"elementor-toc__66bff949\" class=\"elementor-toc__body\">\n\t\t\t<div class=\"elementor-toc__spinner-container\">\n\t\t\t\t<svg class=\"elementor-toc__spinner eicon-animation-spin e-font-icon-svg e-eicon-loading\" aria-hidden=\"true\" viewBox=\"0 0 1000 1000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M500 975V858C696 858 858 696 858 500S696 142 500 142 142 304 142 500H25C25 237 238 25 500 25S975 237 975 500 763 975 500 975Z\"><\/path><\/svg>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2afd1fac elementor-widget elementor-widget-text-editor\" data-id=\"2afd1fac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>For construction mortar, <strong>DS 0.7\u20130.9 is optimal<\/strong>, balancing carboxylate density for water binding, chain extension for rheology, and cold-water solubility for on-site mixing. Below DS 0.65, water retention drops sharply and insoluble residue exceeds spec; above DS 0.9, cost premium yields diminishing returns while salt sensitivity rises in high-alkaline cement. Michem CMC spans DS 0.65\u20130.9 with customizable viscosity (400\u20138000 mPa\u00b7s), enabling formulators to match performance without over-specification.<\/p><h2>Key Takeaways<\/h2><ul><li><strong>DS defines available carboxyl groups<\/strong> \u2014 each substituted hydroxyl carries a \u2013CH\u2082COONa group that ionizes in water, creating the charge density responsible for water binding, chain extension, and solubility. DS 0.65 means 6.5 of 10 sites are substituted.<\/li><\/ul><ul><li><strong>DS-to-performance is direct<\/strong> \u2014 water retention increases with DS in the 0.65\u20130.8 range; viscosity rises with DS at fixed concentration due to coil expansion; solubility transitions to instant cold-water dispersion at DS \u22650.7.<\/li><\/ul><ul><li><strong>Construction-grade optimal DS is 0.7\u20130.9<\/strong> \u2014 maximizes water retention in thin-layer mortars, provides adequate open time, and maintains stable viscosity under high-pH cement conditions.<\/li><\/ul><ul><li><strong>DS 0.7 is the solubility threshold<\/strong> \u2014 below it, crystalline cellulose domains persist, requiring longer hydration and producing &gt;0.3% insoluble residue. Above DS 0.7, the polymer dissolves in cold water within minutes.<\/li><\/ul><ul><li><strong>Viscosity is independently controlled<\/strong> \u2014 viscosity is primarily set by cellulose chain length (DP). Michem produces DS 0.7\u20130.9 CMC across 400\u20138000 mPa\u00b7s, allowing independent selection of water retention and rheology.<\/li><\/ul><h2>Why This Answer Matters<\/h2><p>DS selection is not an academic nuance \u2014 it determines whether CMC performs in the field or fails under job-site conditions. In dry-mix mortar, the difference between DS 0.65 and DS 0.85 can mean significantly higher water retention: full cement hydration versus surface crusting and strength loss.<\/p><p>Consider a tile adhesive applied in summer at 35\u00b0C on porous concrete. A low-DS CMC at 0.2% dosage may lose a large fraction of its mixing water within 15 minutes \u2014 insufficient for adequate hydration, risking adhesive failure. The same dosage of higher-DS CMC retains water longer, ensuring complete hydration and bond strength.<\/p><p>For procurement and formulation teams, understanding the DS-performance relationship eliminates trial-and-error in qualification. Specifying the correct DS range narrows selection to functionally equivalent products. Michem&#8217;s consistent DS control ensures lab-validated performance reproduces at scale \u2014 eliminating the most common cause of field performance drift in cellulose ether formulations.<\/p><h2>Technical Deep Dive<\/h2><h3>1. DS Chemistry: What Substitution Actually Means<\/h3><p>CMC is produced by reacting alkali cellulose with sodium monochloroacetate (SMCA). Each glucose unit contains three reactive hydroxyl groups at the C2, C3, and C6 positions. DS counts the average number of hydroxyls replaced by carboxymethyl (\u2013CH\u2082COONa) groups per anhydroglucose unit (theoretical max 3.0). In industrial-grade CMC, substitution is non-uniform \u2014 C6 primary hydroxyls react preferentially, followed by C2. The distribution affects performance independently of total DS: C6 substitution dominates solubility, while C2\/C3 substitution influences chain stiffness and viscosity. <strong>DS titration testing per ASTM D1439 confirms<\/strong> the substitution level reported on each Michem product data sheet, providing a standardized, verifiable metric for qualification.<\/p><h3>2. Carboxymethyl Groups and Water Binding<\/h3><p>Each \u2013CH\u2082COONa group dissociates in water to \u2013CH\u2082COO\u207b + Na\u207a, creating a negatively charged polyelectrolyte chain. Water binds to these anionic sites through ion-dipole interactions and hydrogen-bonding networks. At DS 0.8, a CMC chain of moderate DP carries hundreds of carboxylate groups, each immobilizing several water molecules \u2014 unavailable for evaporation, available for cement hydration.<\/p><p>The mechanism operates through two effects: <strong>bound water<\/strong> (immobilized in hydration shells) and <strong>network entrapment<\/strong> (CMC chains form a gel network that impedes water migration through capillary channels). <strong>In DS-optimization trials across mortar and ceramic applications<\/strong>, increasing DS from 0.65 to 0.85 at fixed dosage consistently reduced water-loss rate, confirming the DS\u2013water-retention relationship under real conditions.<\/p><h3>3. Chain Extension and Viscosity<\/h3><p>CMC in solution exists as an extended random coil due to intra-chain electrostatic repulsion between carboxylate groups. Higher charge density increases persistence length, enlarging hydrodynamic volume and raising viscosity at equal concentration and molecular weight. Viscosity measured <strong>per ASTM D2196 viscosity<\/strong> methods shows that, at fixed DP and concentration, viscosity rises with DS non-linearly and flattens above DS 0.85 as chain extension approaches maximum. The effect is amplified at low ionic strength and reduced in cement pore solution (high Ca\u00b2\u207a, pH 12\u201313), where divalent ions screen electrostatic repulsion. Yet higher DS still resists complete chain collapse \u2014 a critical advantage in high-alkaline environments.<\/p><h3>4. Solubility Mechanism<\/h3><p>CMC solubility follows two steps: (1) water penetration into amorphous regions causing swelling, and (2) chain disentanglement and dissolution. Unsubstituted cellulose is water-insoluble due to inter-chain hydrogen bonding; each carboxymethyl group breaks several such bonds and introduces a hydrophilic, ionizable site. At DS &lt;0.4, CMC is only alkali-soluble. At DS 0.4\u20130.65, partial cold-water solubility exists but dissolution is slow with insoluble residue. At DS \u22650.7, substitution density disrupts crystallinity, enabling complete cold-water dissolution within minutes \u2014 consistent with the \u22640.3% water-insoluble matter spec on Michem CMC. <strong>DS titration testing per ASTM D1439 confirms<\/strong> that batches meeting this threshold consistently report DS \u22650.7, validating it as a reliable specification boundary.<\/p><h2>Product Specifications<\/h2><p>The following reflects Michem CMC product specifications (CAS 9004-32-4). Values are from Michem product data sheets; grade and process variations apply.<\/p><table><tbody><tr><td><p>Parameter<\/p><\/td><td><p>Specification<\/p><\/td><\/tr><tr><td><p><strong>Product<\/strong><\/p><\/td><td><p><a href=\"https:\/\/michemicals.com\/cellulose-ether\/carboxymethyl-cellulose\/\">CMC (Michem brand)<\/a><\/p><\/td><\/tr><tr><td><p><strong>CAS No.<\/strong><\/p><\/td><td><p>9004-32-4<\/p><\/td><\/tr><tr><td><p><strong>Ionic type<\/strong><\/p><\/td><td><p>Anionic<\/p><\/td><\/tr><tr><td><p><strong>Degree of Substitution (DS)<\/strong><\/p><\/td><td><p>0.65\u20130.9 (customizable)<\/p><\/td><\/tr><tr><td><p><strong>Purity<\/strong><\/p><\/td><td><p>\u226599.5%<\/p><\/td><\/tr><tr><td><p><strong>Chloride<\/strong><\/p><\/td><td><p>\u22640.5%<\/p><\/td><\/tr><tr><td><p><strong>Drying loss<\/strong><\/p><\/td><td><p>\u22648.0%<\/p><\/td><\/tr><tr><td><p><strong>pH (1% solution)<\/strong><\/p><\/td><td><p>6.5\u20138.5<\/p><\/td><\/tr><tr><td><p><strong>Water insoluble matter<\/strong><\/p><\/td><td><p>\u22640.3%<\/p><\/td><\/tr><tr><td><p><strong>Viscosity (1% solution, 25\u00b0C)<\/strong><\/p><\/td><td><p>400\u20138000 mPa\u00b7s (customizable)<\/p><\/td><\/tr><tr><td><p><strong>Recommended dosage (dry-mix mortar)<\/strong><\/p><\/td><td><p>0.1%\u20130.3%<\/p><\/td><\/tr><tr><td><p><strong>Applications<\/strong><\/p><\/td><td><p>Food, pharmaceuticals, cosmetics, detergents, ceramics, oil field, construction<\/p><\/td><\/tr><\/tbody><\/table><p><em>Source: Michem CMC Technical Data Sheet, michemicals.com\/cellulose-ether\/cmc. DS and viscosity are customizable within the stated ranges; confirm grade-specific values with Michem before specification.<\/em><\/p><h2>Practical Application Guide<\/h2><h3>DS Selection by Application<\/h3><p>Selecting DS balances water retention, rheology, and solubility against system chemistry (cement vs. gypsum), substrate absorbency, and ambient conditions:<\/p><ul><li><strong>Tile adhesive (thin-set) &amp; EIFS base coat:<\/strong> DS 0.75\u20130.9. High water retention for thin-layer hydration on porous\/insulating substrates; medium-to-high viscosity for anti-sag.<\/li><\/ul><ul><li><strong>Wall putty \/ skim coat:<\/strong> DS 0.7\u20130.8. Moderate DS gives adequate open time without over-retarding; medium viscosity for creamy consistency.<\/li><\/ul><ul><li><strong>Self-leveling underlayment:<\/strong> DS 0.8\u20130.9 at low dosage. High DS delivers water retention at low ether content; low viscosity preserves flow.<\/li><\/ul><ul><li><strong>Gypsum-based systems:<\/strong> DS 0.65\u20130.75. Gypsum has lower water demand and shorter setting time; excessive retention delays setting and reduces hardness.<\/li><\/ul><ul><li><strong>Ceramic &amp; oil-field:<\/strong> Higher DS (0.8\u20130.9) benefits ceramic extrusion and drilling fluids where solubility, salt tolerance, and rheology stability matter.<\/li><\/ul><h3>Performance Optimization<\/h3><p><strong>Synergy with other ethers:<\/strong> CMC works synergistically with HPMC and HEMC. Lower-dosage Michem CMC (DS 0.8) with HPMC can outperform HPMC alone in water retention at lower total ether cost \u2014 CMC provides bulk water binding, HPMC contributes thermal gelation and air-entrainment stability.<\/p><p><strong>Dosage adjustment:<\/strong> On high-absorption substrates (aerated concrete, clay brick), increase DS rather than dosage. Moving from DS 0.7 to 0.85 at the same dosage typically yields better water retention than increasing low-DS dosage, and avoids excessive viscosity.<\/p><p><strong>Mixing protocol:<\/strong> Pre-blend CMC with cement or sand before adding water. Adding CMC directly to water causes lumping; pre-blending separates particles for uniform dispersion.<\/p><p><strong>Temperature compensation:<\/strong> For hot-weather application (&gt;30\u00b0C), specify a higher DS grade (0.85\u20130.9) and moderate dosage increase to preserve open time.<\/p><h2>FAQ<\/h2>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4ecec96 elementor-widget elementor-widget-accordion\" data-id=\"4ecec96\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"accordion.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion\">\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-8261\" class=\"elementor-tab-title\" data-tab=\"1\" role=\"button\" aria-controls=\"elementor-tab-content-8261\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"icon icon-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"icon icon-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">What is the practical difference between DS 0.7 and DS 0.9 CMC in mortar?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-8261\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"1\" role=\"region\" aria-labelledby=\"elementor-tab-title-8261\"><p>DS 0.9 provides higher water retention than DS 0.7 at equal dosage \u2014 longer open time and more complete hydration, valuable on porous substrates and at elevated temperatures. For interior wall tile on non-porous substrates, DS 0.7\u20130.75 is often adequate. Weigh the cost premium against the performance requirement.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-8262\" class=\"elementor-tab-title\" data-tab=\"2\" role=\"button\" aria-controls=\"elementor-tab-content-8262\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"icon icon-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"icon icon-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Can I use the same DS CMC for cement-based and gypsum-based products?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-8262\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"2\" role=\"region\" aria-labelledby=\"elementor-tab-title-8262\"><p>Yes, but with optimization. Gypsum systems require lower DS (0.65\u20130.75) because gypsum has lower water demand and shorter setting time; excessive retention delays setting and reduces hardness. Cement systems benefit from higher DS (0.75\u20130.9) due to longer hydration and higher alkalinity.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-8263\" class=\"elementor-tab-title\" data-tab=\"3\" role=\"button\" aria-controls=\"elementor-tab-content-8263\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"icon icon-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"icon icon-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">How is DS verified for batch consistency?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-8263\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"3\" role=\"region\" aria-labelledby=\"elementor-tab-title-8263\"><p>DS is determined per ASTM D1439 DS determination methods, providing a standardized, reproducible measurement. Michem reports DS on each data sheet and controls production within tight tolerances so lab-validated performance reproduces at scale. Confirm grade-specific tolerances with Michem during specification.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-8264\" class=\"elementor-tab-title\" data-tab=\"4\" role=\"button\" aria-controls=\"elementor-tab-content-8264\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"icon icon-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"icon icon-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">Does higher viscosity mean higher DS?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-8264\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"4\" role=\"region\" aria-labelledby=\"elementor-tab-title-8264\"><p>No. Viscosity is primarily determined by cellulose degree of polymerization (chain length), while DS determines charge density, water retention, and solubility. Michem produces DS 0.85 CMC at viscosities from 400 to 8000 mPa\u00b7s, enabling independent selection of water retention (DS) and rheology (viscosity grade).<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-accordion-item\">\n\t\t\t\t\t<div id=\"elementor-tab-title-8265\" class=\"elementor-tab-title\" data-tab=\"5\" role=\"button\" aria-controls=\"elementor-tab-content-8265\" aria-expanded=\"false\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon elementor-accordion-icon-right\" aria-hidden=\"true\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-closed\"><i class=\"icon icon-plus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t<span class=\"elementor-accordion-icon-opened\"><i class=\"icon icon-minus\"><\/i><\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-accordion-title\" tabindex=\"0\">What happens if CMC DS is too low for my application?<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<div id=\"elementor-tab-content-8265\" class=\"elementor-tab-content elementor-clearfix\" data-tab=\"5\" role=\"region\" aria-labelledby=\"elementor-tab-title-8265\"><p>Insufficient DS manifests as: visible undissolved gel particles (insoluble residue), faster surface drying and skin formation, lower bond strength from incomplete hydration, and inconsistent viscosity between batches from variable dissolution kinetics. If these appear, verify DS \u22650.7 per ASTM D1439 and adjust upward in 0.05-unit increments until performance stabilizes.<\/p><\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-118a8a3c elementor-widget elementor-widget-text-editor\" data-id=\"118a8a3c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2>Evidence &amp; Standards<\/h2><p>This guide draws on two categories of evidence:<\/p><p><strong>Michem product data:<\/strong> DS (0.65\u20130.9), purity (\u226599.5%), chloride (\u22640.5%), drying loss (\u22648.0%), pH (6.5\u20138.5), water-insoluble matter (\u22640.3%), viscosity (400\u20138000 mPa\u00b7s), and mortar dosage (0.1%\u20130.3%) are from Michem CMC Technical Data Sheets. Confirm grade-specific values with Michem before specification.<\/p><p><strong>Recognized standards cited:<\/strong><\/p><ul><li><strong>ASTM D1439<\/strong> \u2014 Standard test methods for sodium carboxymethylcellulose (DS determination).<\/li><\/ul><ul><li><strong>ASTM D2196<\/strong> \u2014 Rheological properties of non-Newtonian materials by rotational viscometer.<\/li><\/ul><ul><li><strong>ASTM E832<\/strong> \u2014 Standard test methods for cellulosic materials.<\/li><\/ul><ul><li><strong>ISO 9001:2015<\/strong> \u2014 Quality management systems. Michem production operates under a documented quality system aligned with ISO 9001:2015.<\/li><\/ul><p>DS-performance relationships here are grade- and process-dependent; validate via lab testing for each formulation.<\/p><h2>References<\/h2><ol><li>Michem CMC Technical Data Sheet. michemicals.com\/cellulose-ether\/cmc<\/li><\/ol><ol><li>ASTM D1439, Standard Test Methods for Sodium Carboxymethylcellulose. ASTM International, West Conshohocken, PA.<\/li><\/ol><ol><li>ASTM D2196, Standard Test Methods for Rheological Properties of Non-Newtonian Materials by Rotational (Brookfield type) Viscometer. ASTM International, West Conshohocken, PA.<\/li><\/ol><ol><li>ASTM E832, Standard Test Methods for Cellulosic Materials. ASTM International, West Conshohocken, PA.<\/li><\/ol><ol><li>ISO 9001:2015, Quality management systems \u2014 Requirements. International Organization for Standardization, Geneva.<\/li><\/ol><h2>About This Guide<\/h2><p><strong>Who this guide is for:<\/strong> Formulation engineers, procurement teams, and specifiers sourcing CMC for construction chemicals, ceramics, oil-field, and related applications. Assumes basic familiarity with cellulose ethers.<\/p><p><strong>How it was produced:<\/strong> Compiled by the Michem Technical Applications Team from product specifications, ASTM test methods, and field experience in mortar and ceramic applications. Product data is from Michem CMC Technical Data Sheets; references are from ASTM and ISO standards in References.<\/p><p><strong>Limitations:<\/strong> The DS-performance relationship is grade- and process-dependent. DS values, viscosity grades, and dosages interact with formulation chemistry, substrate, and ambient conditions. Always validate selection via lab testing under target conditions before full-scale specification.<\/p><p><strong>Update policy:<\/strong> Reviewed periodically as specifications and standards evolve. The &#8220;Last reviewed&#8221; date in the Editorial &amp; Trust Box indicates the most recent review. For latest data, consult the current Michem CMC Technical Data Sheet.<\/p><h2>Conclusion &amp; CTA<\/h2><p>Degree of substitution is the primary structural parameter governing CMC performance. DS 0.7\u20130.9 is the practical sweet spot for construction and industrial applications, balancing water retention, solubility, and cost. Within this range, each DS increment delivers measurable changes in water binding, viscosity, and dissolution \u2014 enabling formulators to match performance to requirements precisely.<\/p><p><a href=\"https:\/\/michemicals.com\/cellulose-ether\/carboxymethyl-cellulose\/\">Michem CMC<\/a> combines DS 0.65\u20130.9, high purity (\u226599.5%), low insoluble matter (\u22640.3%), and customizable viscosity (400\u20138000 mPa\u00b7s) for reliable performance across dry-mix mortar, tile adhesive, wall putty, ceramic, and oil-field applications.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-782a720 elementor-widget elementor-widget-post-info\" data-id=\"782a720\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-e766a79 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class=\"elementor-screen-only\">Ti\u1ebfp theo<\/span><\/span><\/a>\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-701ad843 e-con-full e-flex e-con e-child\" data-id=\"701ad843\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-655f0361 elementor-widget elementor-widget-heading\" data-id=\"655f0361\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Recent Post<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4cbf27d2 elementor-grid-3 elementor-grid-tablet-2 elementor-grid-mobile-1 elementor-posts--thumbnail-top elementor-card-shadow-yes elementor-posts__hover-gradient elementor-widget elementor-widget-posts\" data-id=\"4cbf27d2\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;cards_columns&quot;:&quot;3&quot;,&quot;cards_columns_tablet&quot;:&quot;2&quot;,&quot;cards_columns_mobile&quot;:&quot;1&quot;,&quot;cards_row_gap&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:35,&quot;sizes&quot;:[]},&quot;cards_row_gap_tablet&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]},&quot;cards_row_gap_mobile&quot;:{&quot;unit&quot;:&quot;px&quot;,&quot;size&quot;:&quot;&quot;,&quot;sizes&quot;:[]}}\" data-widget_type=\"posts.cards\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-posts-container elementor-posts elementor-posts--skin-cards elementor-grid\" role=\"list\">\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-11740 post type-post status-publish format-standard has-post-thumbnail hentry category-blog tag-hec-for-detergent tag-hec-for-industrial tag-hec-thickener\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/michemicals.com\/vi\/hec-is-the-preferred-thickener-for-detergent\/\" tabindex=\"-1\" ><div class=\"elementor-post__thumbnail\"><img decoding=\"async\" width=\"300\" height=\"188\" src=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/HEC-Is-the-Preferred-Thickener-for-Detergent-300x188.webp\" class=\"attachment-medium size-medium wp-image-11742\" alt=\"HEC-Is-the-Preferred-Thickener-for-Detergent\" srcset=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/HEC-Is-the-Preferred-Thickener-for-Detergent-300x188.webp 300w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/HEC-Is-the-Preferred-Thickener-for-Detergent-768x480.webp 768w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/HEC-Is-the-Preferred-Thickener-for-Detergent-18x12.webp 18w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/HEC-Is-the-Preferred-Thickener-for-Detergent.webp 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\"><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/michemicals.com\/vi\/hec-is-the-preferred-thickener-for-detergent\/\" >\n\t\t\t\tWhy HEC Is the Preferred Thickener for Detergent &amp; Industrial Cleaning Formulations\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/michemicals.com\/vi\/hec-is-the-preferred-thickener-for-detergent\/\" aria-label=\"Read more about Why HEC Is the Preferred Thickener for Detergent &amp; Industrial Cleaning Formulations\" tabindex=\"-1\" >\n\t\t\tRead More \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\tTh\u00e1ng 7 24, 2026\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-11734 post type-post status-publish format-standard has-post-thumbnail hentry category-blog tag-cmc-fir-dry-mix-mortar tag-dry-mix-mortar-shelf-life\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/michemicals.com\/vi\/how-cmc-extends-dry-mix-mortar-shelf-life\/\" tabindex=\"-1\" ><div class=\"elementor-post__thumbnail\"><img decoding=\"async\" width=\"300\" height=\"188\" src=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/06\/pce-flakes-for-dry-mix-mortar-300x188.webp\" class=\"attachment-medium size-medium wp-image-10565\" alt=\"pce flakes,hps,cmc for dry mix mortar\" srcset=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/06\/pce-flakes-for-dry-mix-mortar-300x188.webp 300w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/06\/pce-flakes-for-dry-mix-mortar-768x480.webp 768w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/06\/pce-flakes-for-dry-mix-mortar-18x12.webp 18w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/06\/pce-flakes-for-dry-mix-mortar.webp 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\"><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/michemicals.com\/vi\/how-cmc-extends-dry-mix-mortar-shelf-life\/\" >\n\t\t\t\tHow CMC Extends Dry-Mix Mortar Shelf Life?\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/michemicals.com\/vi\/how-cmc-extends-dry-mix-mortar-shelf-life\/\" aria-label=\"Read more about How CMC Extends Dry-Mix Mortar Shelf Life?\" tabindex=\"-1\" >\n\t\t\tRead More \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\tTh\u00e1ng 7 24, 2026\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-11719 post type-post status-publish format-standard has-post-thumbnail hentry category-blog tag-cmc-degree tag-cmc-water-retention tag-michem-cmc\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/michemicals.com\/vi\/muc-do-thay-the-cmc\/\" tabindex=\"-1\" ><div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"188\" src=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution-300x188.webp\" class=\"attachment-medium size-medium wp-image-11722\" alt=\"CMC Degree of Substitution\" srcset=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution-300x188.webp 300w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution-768x480.webp 768w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution-18x12.webp 18w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Degree-of-Substitution.webp 960w\" sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\"><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/michemicals.com\/vi\/muc-do-thay-the-cmc\/\" >\n\t\t\t\tCMC Degree of Substitution (DS 0.65\u20130.9): How DS Determines Water Retention, Viscosity &amp; Solubility\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/michemicals.com\/vi\/muc-do-thay-the-cmc\/\" aria-label=\"Read more about CMC Degree of Substitution (DS 0.65\u20130.9): How DS Determines Water Retention, Viscosity &amp; Solubility\" tabindex=\"-1\" >\n\t\t\tRead More \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\tTh\u00e1ng 7 23, 2026\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-11687 post type-post status-publish format-standard has-post-thumbnail hentry category-blog tag-alkali-resistant-pan-fiber tag-high-modulus-pan-fiber tag-short-cut-pan-fiber-for-concrete\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/michemicals.com\/vi\/huong-dan-lua-chon-ba-loai-soi-pan\/\" tabindex=\"-1\" ><div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"188\" src=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/PAN-Fiber-12mm-300x188.webp\" class=\"attachment-medium size-medium wp-image-11690\" alt=\"Michem PAN 12mm fiber\" srcset=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/PAN-Fiber-12mm-300x188.webp 300w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/PAN-Fiber-12mm-768x480.webp 768w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/PAN-Fiber-12mm-18x12.webp 18w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/PAN-Fiber-12mm.webp 800w\" sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\"><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/michemicals.com\/vi\/huong-dan-lua-chon-ba-loai-soi-pan\/\" >\n\t\t\t\tPAN Fiber Three Types Selection Guide: High-Modulus vs Alkali-Resistant vs Short-Cut for Concrete\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/michemicals.com\/vi\/huong-dan-lua-chon-ba-loai-soi-pan\/\" aria-label=\"Read more about PAN Fiber Three Types Selection Guide: High-Modulus vs Alkali-Resistant vs Short-Cut for Concrete\" tabindex=\"-1\" >\n\t\t\tRead More \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\tTh\u00e1ng 7 22, 2026\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-11671 post type-post status-publish format-standard has-post-thumbnail hentry category-blog tag-cmc-for-food tag-cmc-for-mortar tag-cmc-for-pharma\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/michemicals.com\/vi\/cac-ung-dung-da-nganh-cua-cmc\/\" tabindex=\"-1\" ><div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"188\" src=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Multi-Industry-Applications-300x188.webp\" class=\"attachment-medium size-medium wp-image-11674\" alt=\"CMC Multi-Industry Applications\" srcset=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Multi-Industry-Applications-300x188.webp 300w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Multi-Industry-Applications-768x480.webp 768w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Multi-Industry-Applications-18x12.webp 18w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/CMC-Multi-Industry-Applications.webp 960w\" sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\"><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/michemicals.com\/vi\/cac-ung-dung-da-nganh-cua-cmc\/\" >\n\t\t\t\tCMC Multi-Industry Applications: From Food &amp; Pharma Grade to Construction Mortar \u2014 One Chemistry, Multiple Markets\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/michemicals.com\/vi\/cac-ung-dung-da-nganh-cua-cmc\/\" aria-label=\"Read more about CMC Multi-Industry Applications: From Food &amp; Pharma Grade to Construction Mortar \u2014 One Chemistry, Multiple Markets\" tabindex=\"-1\" >\n\t\t\tRead More \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\tTh\u00e1ng 7 21, 2026\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<article class=\"elementor-post elementor-grid-item post-11662 post type-post status-publish format-standard has-post-thumbnail hentry category-blog tag-silicone-hydrophobic-powder-vs-liquid-silane\" role=\"listitem\">\n\t\t\t<div class=\"elementor-post__card\">\n\t\t\t\t<a class=\"elementor-post__thumbnail__link\" href=\"https:\/\/michemicals.com\/vi\/bot-silicone-ky-nuoc-so-voi-silan-long\/\" tabindex=\"-1\" ><div class=\"elementor-post__thumbnail\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"187\" src=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/Silicone-Hydrophobic-Powder-vs-Liquid-Silane-300x187.webp\" class=\"attachment-medium size-medium wp-image-11665\" alt=\"Silicone Hydrophobic Powder vs Liquid Silane\" srcset=\"https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/Silicone-Hydrophobic-Powder-vs-Liquid-Silane-300x187.webp 300w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/Silicone-Hydrophobic-Powder-vs-Liquid-Silane-768x479.webp 768w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/Silicone-Hydrophobic-Powder-vs-Liquid-Silane-18x12.webp 18w, https:\/\/michemicals.com\/wp-content\/uploads\/2026\/07\/Silicone-Hydrophobic-Powder-vs-Liquid-Silane.webp 801w\" sizes=\"(max-width: 300px) 100vw, 300px\" title=\"\"><\/div><\/a>\n\t\t\t\t<div class=\"elementor-post__text\">\n\t\t\t\t<h3 class=\"elementor-post__title\">\n\t\t\t<a href=\"https:\/\/michemicals.com\/vi\/bot-silicone-ky-nuoc-so-voi-silan-long\/\" >\n\t\t\t\tSilicone Hydrophobic Powder vs Liquid Silane: Which Water Repellent Is Better for Dry-Mix Mortar?\t\t\t<\/a>\n\t\t<\/h3>\n\t\t\n\t\t<a class=\"elementor-post__read-more\" href=\"https:\/\/michemicals.com\/vi\/bot-silicone-ky-nuoc-so-voi-silan-long\/\" aria-label=\"Read more about Silicone Hydrophobic Powder vs Liquid Silane: Which Water Repellent Is Better for Dry-Mix Mortar?\" tabindex=\"-1\" >\n\t\t\tRead More \u00bb\t\t<\/a>\n\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-post__meta-data\">\n\t\t\t\t\t<span class=\"elementor-post-date\">\n\t\t\tTh\u00e1ng 7 20, 2026\t\t<\/span>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ab4447b elementor-hidden-tablet elementor-hidden-mobile e-con-full e-flex e-con e-child\" data-id=\"ab4447b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element 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elementor-inner-column elementor-element elementor-element-6544f38\" data-id=\"6544f38\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3812970 elementor-search-form--skin-classic elementor-search-form--button-type-icon elementor-search-form--icon-search elementor-widget elementor-widget-search-form\" data-id=\"3812970\" data-element_type=\"widget\" data-e-type=\"widget\" data-settings=\"{&quot;skin&quot;:&quot;classic&quot;}\" data-widget_type=\"search-form.default\">\n\t\t\t\t\t\t\t<search role=\"search\">\n\t\t\t<form class=\"elementor-search-form\" action=\"https:\/\/michemicals.com\/vi\" method=\"get\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-search-form__container\">\n\t\t\t\t\t<label class=\"elementor-screen-only\" for=\"elementor-search-form-3812970\">T\u00ecm ki\u1ebfm<\/label>\n\n\t\t\t\t\t\n\t\t\t\t\t<input 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elementor-author-box--layout-image-above elementor-author-box--align-center elementor-widget elementor-widget-author-box\" data-id=\"0e3e96a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"author-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-author-box\">\n\t\t\t\t\t\t\t<div  class=\"elementor-author-box__avatar\">\n\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/michemicals.com\/wp-content\/uploads\/2025\/02\/beauty-200x300.jpeg\" alt=\"Picture of Sales Manager\" loading=\"lazy\" title=\"\">\n\t\t\t\t<\/div>\n\t\t\t\n\t\t\t<div class=\"elementor-author-box__text\">\n\t\t\t\t\t\t\t\t\t<div >\n\t\t\t\t\t\t<h5 class=\"elementor-author-box__name\">\n\t\t\t\t\t\t\tSales Manager\t\t\t\t\t\t<\/h5>\n\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-author-box__bio\">\n\t\t\t\t\t\t<p>I'm Tinna,I have been engaged in the cellulose ether industry for 15 years.I'd be happy to share my post with you. 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0-33.8z\"><\/path><\/svg>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Send Inquiry Now<\/span>\n\t\t\t\t\t\t\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/form>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Introduction CMC&#8217;s degree of substitution (DS 0.65\u20130.9) directly determines three performance parameters: water retention, viscosity,<\/p>","protected":false},"author":1,"featured_media":11722,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_angie_page":false,"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","page_builder":"","footnotes":""},"categories":[1],"tags":[263,246,264],"class_list":["post-11719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-cmc-degree","tag-cmc-water-retention","tag-michem-cmc"],"_links":{"self":[{"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/posts\/11719","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/comments?post=11719"}],"version-history":[{"count":3,"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/posts\/11719\/revisions"}],"predecessor-version":[{"id":11725,"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/posts\/11719\/revisions\/11725"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/media\/11722"}],"wp:attachment":[{"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/media?parent=11719"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/categories?post=11719"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/michemicals.com\/vi\/wp-json\/wp\/v2\/tags?post=11719"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}