Sodium carboxymethyl cellulose CAS 9004-32-4

Product Name: Sodium Carboxymethyl Cellulose
English Alias: CMC-Na; Sodium CMC; Cellulose Gum
CAS Number: 9004-32-4
Molecular Formula: [C₆H₇O₂(OH)ₓ(OCH₂COONa)ᵧ]ₙ where x+y=3
Molecular Weight: 90,000-700,000 g/mol (polymer-dependent)
Appearance: White to off-white free-flowing powder
Package: 25 kg/bag (paper-plastic composite bag with inner PE liner)

What is Sodium Carboxymethyl Cellulose？

Sodium Carboxymethyl Cellulose (CMC-Na) is an anionic water-soluble polymer derived from natural cellulose through chemical modification. It appears as a white to off-white odorless powder with excellent water solubility, forming clear, viscous colloidal solutions. The compound exhibits outstanding thickening, binding, emulsifying, and stabilizing properties, making it one of the most widely used cellulose derivatives across various industries.

COA (Certificate of Analysis):

序号 No	检测项目 Test Item	质量标准 Quality specification	分析结果 Analysis Result
1	粘度Viscosity （1%25℃Brookfield），Cps	100-200	140
2	pH值 pH value(1%25℃)	6.5-8.0	7.4
3	取代度 Degree of substitute	0.70-0.90	0.84
4	干燥减量 Loss on drying (105℃),%	≤8	7.5
5	纯度,%	≥99.5	99.6
6	铁Iron(Fe),%	≤0.02	＜0.01
7	铅Lead(Pb),%	≤0.0005	＜0.0001
8	砷Arsenic(As),%	≤0.0002	＜0.0001
9	重金属Heavy metals(Pb),%	≤0.0015	＜0.0001

Application:

1. Food Industry: Thickener and stabilizer in ice cream, beverages, and baked goods (E466)

2. Pharmaceuticals: Tablet binder, viscosity enhancer in suspensions, and wound dressing component

3. Cosmetics: Thickener in lotions, creams, and toothpaste formulations

4. Detergents: Anti-redeposition agent in laundry detergents

5. Paper Industry: Coating agent and strength enhancer in paper manufacturing

6. Oil Drilling: Viscosity modifier and fluid loss control agent in drilling fluids

Safety Profile:

Sodium Carboxymethyl Cellulose is generally recognized as safe (GRAS) by FDA and WHO. May cause mild eye irritation. Inhalation of dust may cause respiratory discomfort in sensitive individuals. Use appropriate personal protective equipment including dust mask and safety glasses when handling. The substance is biodegradable and environmentally compatible. For detailed safety information, consult the full Safety Data Sheet (SDS).

Storage Requirements:

Store in a cool, dry, well-ventilated area away from direct sunlight. Keep containers tightly sealed and protected from moisture. Maintain storage temperature below 30°C. Relative humidity below 65% recommended.

Transport & Packaging:

Sodium Carboxymethyl Cellulose is packaged in moisture-proof paper-plastic composite bags with inner polyethylene liner (25 kg net weight per bag). Transport as non-hazardous material under normal conditions. Ensure containers are properly sealed and protected from moisture during transportation. Store away from incompatible materials.