
Croscarmellose Sodium (CCNa) is a modified cellulose derivative produced by subjecting natural cellulose to carboxymethylation and crosslinking reactions. Its chemical structure consists of a network polymer formed by partially carboxymethylated sodium cellulose salt linked through three-dimensional crosslinks. Its unique crosslinked structure and excellent swelling properties make it a crucial functional material in pharmaceuticals, food, cosmetics, and other fields.
| Item | Specification |
| Melting point | >205°C (dec.) |
| Bulk density (g/cc) | 0.48 |
| Settling volume | 10–30 ml |
| Loose density | Approx. 0.529 g/cm³ |
| Bonding index | 0.0456 |
| Specific surface area | 0.81–0.83 m²/g |
| DS | 0.60–0.85 |
| Solubility | Insoluble in water and most organic solvents (e.g., ethanol, diethyl ether, acetone). |
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