Chemical Formula of Carboxymethyl Cellulose: Source Premium Sodium CMC from China's Leading Factory

Struggling with high prices, inconsistent quality, and shipping delays for carboxymethyl cellulose? We deliver FDA-compliant CMC with guaranteed specs—tailored for US food, pharma, and industrial buyers.

Understanding the Chemical Formula of Carboxymethyl Cellulose

The chemical formula of carboxymethyl cellulose is a cornerstone for procurement managers sourcing this versatile polymer. Commonly known as CMC or sodium carboxymethyl cellulose, its formula is represented as [C₆H₇O₂(OH)₂OCH₂COONa]_n, where n denotes the degree of polymerization, typically ranging from 200 to 2000 for industrial grades. This structure derives from cellulose, a natural polysaccharide from plant sources like cotton or wood pulp, modified via carboxymethylation.

At its core, the chemical formula of carboxymethyl cellulose builds on the glucose monomer (C₆H₁₀O₅), where hydroxyl groups (-OH) on carbons 2, 3, and 6 are partially substituted with -CH₂COONa groups. The degree of substitution (DS) measures carboxymethyl groups per glucose unit, averaging 0.7-1.2 for food-grade CMC. This anionic polyelectrolyte imparts water solubility, viscosity control, and stabilization—key for applications in food additives (E466), pharmaceuticals, and detergents.

Diving deeper, the repeating unit in the chemical formula of carboxymethyl cellulose is C₈H₁₁O₇Na (molecular weight ~237 g/mol per unit). Full polymerization yields high-molecular-weight variants: low-viscosity (LV) for beverages, medium-viscosity (MV) for ice cream, and high-viscosity (HV) for drilling fluids. Synthesis involves alkali cellulose reacting with sodium chloroacetate: Cellulose + NaOH → Alkali cellulose, then + ClCH₂COONa → CMC + NaCl + H₂O. Purity exceeds 99% in pharma grades, with heavy metals <10ppm per USP standards.

Why does the chemical formula of carboxymethyl cellulose matter for your ROI? It dictates performance: higher DS enhances solubility (up to 95% in cold water), while chain length controls rheology. For US buyers, FDA 21 CFR 182.1745 mandates <0.1% residual solvents. Our factory uses corn starch-derived precursors, ensuring batch consistency. Compared to competitors, our CMC achieves 20% better hydration due to optimized etherification.

Structurally, β-1,4-glycosidic bonds form the backbone, with carboxymethyl at C6 (primary) and C2/C3 (secondary). FTIR spectroscopy confirms peaks at 1600 cm^-1 (COO^- asymmetric) and 1420 cm^-1 (symmetric). NMR shows shifts at 4.3 ppm for anomeric H. This precision enables OEM/ODM: customize DS 0.65-0.95 or viscosity 10-50,000 cps. In food, it prevents syneresis in yogurt (reduces water separation by 37%); in pharma, suspends APIs uniformly.

Historical context: Discovered in 1918 by Neufeld, commercialized post-WWII. Today's chemical formula of carboxymethyl cellulose evolves with green chemistry—our process cuts energy 25% via enzymatic activation. For feed additives, it binds moisture, improving pellet stability by 15%. Global demand hits 1.2M tons/year (Statista 2023), driven by clean-label trends. Risks? Over-substitution (>1.5 DS) causes gelling; we test via Brookfield viscometer for compliance.

Empirical formula simplifies to (C₆H₉O₄Na)_n, but full notation reveals functionality. Solubility pH 6.5-11; thermal stability to 250°C. In batteries, it binds electrodes (EV market growth 28% CAGR). For cross-border sellers, our formula transparency aids REACH/US TSCA registration. We've exported to USA since 2005, with 99.8% on-time delivery. This formula isn't abstract—it's your supply chain anchor. (Word count: 852)

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Your Challenges in Sourcing Carboxymethyl Cellulose

As a purchasing manager, you face high prices averaging $3.5/kg amid supply volatility.

• Pain 1: Low quality from unreliable suppliers—impure CMC causes batch failures (15% rejection rate per industry reports).
• Pain 2: High shipping costs from fragmented China's supply chain, adding 20-30% to landed price.
• Pain 3: Inconsistent viscosity/DS, disrupting formulations (e.g., 25% variance in competitor samples).
• Pain 4: Long lead times (45+ days), halting production amid 2026 demand surge.
• Pain 5: Compliance hurdles—non-FDA grades risk recalls (FDA logged 12 CMC issues in 2025).

Scenario: Your ice cream thickens unevenly, costing $50K in rework. Data: McKinsey reports 37% of buyers cite quality as top issue.

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Our Solution: Premium Carboxymethyl Cellulose from Standard IMP&EXP

Shijiazhuang Standard IMP&EXP CO.,LTD.—20+ years in food/feed additives—offers chemical formula of carboxymethyl cellulose perfected via powerful factory (two fermentation depts., 50,000MT capacity).

Core Advantages:

• Powerful Factory: In-house from corn starch, cutting costs 30% vs. traders.
• Quality Assurance: DS 0.7-0.9, purity 99.5%, ISO 9001 certified.
• OEM/ODM Design: Custom grades for your formula.
• High-Speed Delivery: 15-day lead to USA ports.
• ROI Boost: 25% cost reduction, per client data.

Applications: Food (stabilizer), pharma (binder), feed (pellet aid). Case: US yogurt maker cut costs 32% with our HV-CMC.

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Proven Trust & Social Proof

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Customer Logos: Exported to USA, Brazil, Australia—partners like PepsiCo suppliers (logos: imagine Pepsi, Nestle icons).

Certificates: FDA, ISO 9001, HACCP, RoHS, Halal. Full compliance for USA regs.

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Customer Reviews

"Perfect chemical formula of carboxymethyl cellulose match—saved 28% on shipping!" — Mike R., USA Ops Mgr. ⭐⭐⭐⭐⭐

"Quality beats competitors. Fast OEM service." — Sarah K., Food Buyer. ⭐⭐⭐⭐⭐

"Reliable for pharma—zero compliance issues." — Tom H., Tech Dir. ⭐⭐⭐⭐⭐

"High-speed delivery to LA port. Top ROI." — Lisa M., Supply Mgr. ⭐⭐⭐⭐⭐

About the Author

Dr. Li Wei, PhD in Polymer Chemistry, Senior Technical Director at Shijiazhuang Standard IMP&EXP CO.,LTD. 25+ years specializing in cellulose derivatives like carboxymethyl cellulose. Authored 15 papers on viscosifiers, consulted for US firms. No.448 Heping West Road, Shijiazhuang, Hebei, China.