CARBOXYMETHYL CELLULOSE (CMC)

CAS:9004-32-4

Carboxymethyl Cellulose (CMC) is an important cellulose ether compound

CARBOXYMETHYL CELLULOSE

Carboxymethyl Cellulose (CMC) is an anionic water-soluble polymer

Appearance: White to yellowish powder/granules
Smell: No special smell.
Melting point: no clear melting point, decomposition temperature of about 200℃.
Density: 1.56 g/cm³ (depending on degree of polymerization and substitution).
Solubility: Easily soluble in water, forming a transparent viscous solution, insoluble in most organic solvents.
Alkali cellulose is prepared by treating cellulose with sodium hydroxide and reacting with monochloroacetic acid. It belongs to anionic cellulose ether.
The pKa of carboxymethyl substituents is about 4 in pure water and about 3.5 in 0.5 mol/L NaCl, which can be used as weakly acidic cation exchangers

Food Technology:
- Ice cream stabilizer (0.3-0.7%)
- Bakery moisture retention agent
Paper Engineering:
- Wet-strength additive (+40% tear)
Textile Processing:
- Warp sizing (5-10% solution)
Coating Systems:
- Latex paint thickener
Pharmaceuticals:
- Tablet disintegrant (3-15%)
Consumer Products:
- Toothpaste viscosity modifier
Construction Materials:
- Cement workability enhancer
Industrial Processes:
- Oil drilling fluid component
- Wastewater flocculant