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CAS No 9004-32-4 , Carboxymethyl cellulose

  • Name: Carboxymethyl cellulose
  • Synonyms: carboximethylcellulosum sodium; cmc-4lf sodium; croscarmellosum sodium; carboxymethylcellulosum sodium; carboxyl methyl cellulose sodium; cellulose carboxymethylate sodium; carboxymethyl cellulose sodium; sodium carboxymethyl cellulose; carboxymethylcellulose sodium; cellulose, (carboxymethyl) sodium; cmc sodium salt; carbose sodium; carboxy-methyl cellulose sodium; CMC sodium salt; carmelosa sodium; cellulose gum 7h sodium; carmellose sodium;Carboxymethyl cellulose, sodium salt; carboxymethylated cellulose pulp sodium; croscarmellose sodium; cellulose carboxymethyl ether, sodium; cellulose carboxymethyl ether sodium;Cellulose carboxymethyl ether sodium salt; colloresine sodium; celluloseglycolic acid sodium; cmc sodium; carmellosum sodium; carboxymethyl cellulose ether sodium; cellulose, ether with glycolic acid sodium;Carboxymethyl cellulose;
  • CAS Registry Number:
  • Melting Point: 300 ºC
  • Density: 1,6 g/cm3
  • EINECS: 900-432-4
  • Molecular Weight: 264.204
  • InChI: InChI=1/C6H12O6.C2H4O2.Na.H/c7-1-3(9)5(11)6(12)4(10)2-8;1-2(3)4;;/h1,3-6,8-12H,2H2;1H3,(H,3,4);;/rC6H12O6.C2H4O2.HNa/c7-1-3(9)5(11)6(12)4(10)2-8;1-2(3)4;/h1,3-6,8-12H,2H2;1H3,(H,3,4);1H
  • Risk Statements: S24/25
  • Molecular Formula: C2H4O3?xNa?x
  • Molecular Structure:CAS No:9004-32-4 Carboxymethyl cellulose

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References of Carboxymethyl cellulose
Title: Carboxymethylcellulose Sodium
CAS Registry Number: 9004-32-4
CAS Name: Carboxymethyl ether cellulose sodium salt
Synonyms: sodium carboxymethylcellulose; sodium cellulose glycolate
Trademarks: Cethylose (Ascher); CMC (Stuart); Cel-O-Brandt; Glykocellon; Carbose D; Xylo-Mucine; Tylose MGA; Cellolax; Polycell
Line Formula: RnOCH2COONa
Literature References: Prepd by treating alkali cellulose with sodium chloroacetate: Faith, Keyes & Clark's Industrial Chemicals, F. A. Lowenheim, M. K. Moran, Eds. (Wiley-Interscience, New York, 4th ed., 1975) pp 235-238. Review and bibliography: Ott, Cellulose and Cellulose Derivatives, New York, 1946 (2nd ed., 1955).
Properties: White granules. Soly in water depends on degree of substitution. Water-soluble CMC is available in various viscosities (5-2000 cP in 1% soln), and the soly is equally good in hot and cold water (difference from methyl cellulose). Also the presence of metal salts has little effect on the viscosity. Solns are stable between pH 2 and 10. Below pH 2 precipitation of a solid occurs, above pH 10 the viscosity decreases rapidly. pKa 4.30. The free acid is obtained from aq soln at pH 2.5 and may be precipitated with alcohol.
pKa: pKa 4.30
Use: In drilling muds, in detergents as a soil-suspending agent, in resin emulsion paints, adhesives, printing inks, textile sizes, as protective colloid in general. As stabilizer in foods. Pharmaceutic aid (suspending agent; tablet excipient; viscosity-increasing agent).