[Definition]
A semisynthetic, water-soluble polymer in which CH 2 COOH groups are substituted on the glucose units of the cellulose chain through an ether link- age. Mw ranges from 21,000 to 500,000. Since the reaction occurs in an alkaline medium, the prod- uct is the sodium salt of the carboxylic acid R-O- CH 2 COONa. |
[Appearance]
solid |
[Melting point ]
274 °C (dec.)
|
[density ]
1,6 g/cm3 |
[FEMA ]
2239 | CARBOXYMETHYLCELLULOSE |
[storage temp. ]
room temp |
[solubility ]
H2O: 20 mg/mL, soluble
|
[form ]
low viscosity
|
[pka]
4.30(at 25℃) |
[color ]
White to light yellow |
[Odor]
Odorless |
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