Synonyms: Celaburát; Celaburato; Celiulioze˙s acetatas-butiratas; Cellaburatum; Cellulosaacetatbutyrat; Cellulose Acetate Butanoate; Cellulose Acetate Butyrate; Cellulose, acétate butyrate de; Cellulosi acetas butyras; Cellulóz-acetát-butirát; Selluloosa-asetaattibutyraatti.
Cyrillic synonym: Целлабурат.

Chemical information

CAS — 9004-36-8.


In Eur..

Ph. Eur. 6.2

(Cellulose Acetate Butyrate). A partly or completely O-acetylated and O-butyrated cellulose containing not less than 2.0% and not more than 30.0% of acetyl groups and not less than 16.0% and not more than 53.0% of butyryl groups, calculated with reference to the dried substance. A white, yellowishwhite, or greyish-white, slightly hygroscopic, powder or granules. Practically insoluble in water and in alcohol; soluble in acetone, in formic acid, and in a mixture of equal volumes of methyl alcohol and dichloromethane. Store in airtight containers.


Cellaburate is a pharmaceutical excipient used in drug delivery systems. It has also been used in hydrophobic contact lens materials.
Published February 20, 2019.