Products

EASTMAN CELLULOSE ACETATE
Cellulose Acetate USP/NF, EP

Cellulose acetate is cellulose in which a portion or all of the hydroxyl groups are acetylated. It is prepared from highly purified cellulose by treatment with acid catalysis and acetic anhydride and occurs as a white, odourless, tasteless, free flowing powder.

Cellulose acetate is used as a semi-permeable coating on tablets, especially on osmotic pump-type tablets and implants allowing for controlled-release of the actives. Cellulose acetate films, in conjunction with other materials, also offer sustained-release without the necessity of drilling a hole in the coating as is typical with osmotic pump systems. Cellulose acetate and other cellulose esters have also been used to form drug loaded micro-particles with controlled-release characteristics.

Grade

Acetyl
(%)

Hydroxyl
(%)

Viscosity
(P)

Applications

CA-398-10

39.8

3.5

38.0

Semi-permeable coating for osmotic drug delivery systems. Also used for taste masking and as a directly compressible matrix former in extended-release tablets

CA-320S

32.0

8.7

2.1

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