Sodium Carboxymethyl Cellulose
CMC, Cellulose Gum
- CAS
- 9004-32-4
- EC
- 618-378-6
- Food Code
- E467
- Sectors
- Food & Nutrition, Oil, Gas & Energy, Pharma & Healthcare
Sodium Carboxymethyl Cellulose (CAS 9004-32-4) is a cellulose-derived anionic polymer supplied as a white to light yellow, odorless powder that forms viscous colloidal solutions in water and serves food, pharmaceutical and oilfield applications as a thickener, binder and viscosifier. Density 1.6 g/cm³, no fixed melting point (decomposes >300°C); forms viscous colloidal solutions in water, insoluble in organics. pH 6.5-8.5; degree of substitution 0.7-1.2 affects viscosity. Produced by reacting cellulose with chloroacetic acid and NaOH.
Typical Properties
| Appearance | solid |
|---|---|
| Form | low viscosity |
| Color | White to light yellow |
| Odor | Odorless |
| Melting point | 269.73 °C |
| Density | 0.2-0.94 g/cm³ (solid) (bulk) |
| Water solubility | soluble |
| pH | pH (10g/l, 25°C) 6.0～8.0 |
| HS code | 39123100 |
| Grades available | Food Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Sodium Carboxymethyl Cellulose
Applications
As thickener/emulsifier in food; binder in pharmaceuticals; viscosifier in oil drilling; in detergents, cosmetics, textiles for suspension and binding.
Safety & Risks
Safe, but dust irritates eyes/respiratory; incompatible with strong acids. Low explosion risk; GRAS by FDA, no consumer concerns in additives.
Packaging
In 25kg multi-layer paper bags with PE or fiber drums. Store dry to prevent caking.