CELLULOSE ACETATE Property

Melting point:

240-249 °C(lit.)

Density 

1.3 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.475(lit.)

solubility 

Practically insoluble in water, soluble in acetone, in formic acid and in a mixture of equal volumes of methanol and methylene chloride, practically insoluble in ethanol (96 per cent)

form 

Fine Crystalline Powder

color 

White

CAS DataBase Reference

52907-01-4

EPA Substance Registry System

Cellulose, acetate 1,2,4-benzenetricarboxylate (52907-01-4)

Safety

Safety Statements 

24/25

WGK Germany 

-

Hazard and Precautionary Statements (GHS)

CELLULOSE ACETATE Chemical Properties,Usage,Production

Chemical Properties

white fine crystalline powder

Uses

Excipient

Preparation

Cellulose acetate is prepared by hydrolyzing the triester to remove some of the acetyl groups; the plastic-grade resin contains 38-40% acetyl. The propionate and butyrate esters are made by substituting propionic acid and its anhydride (or butyric acid and its anhydride) for some of the acetic acid and acetic anhydride. Plastic grades of cellulose-acetate–propionate resin contain 39-47% propionyl and 2-9% acetyl; cellulose-acetate–butyrate resins contain 26-39% butyryl and 12-15% acetyl.
These cellulose esters form tough, strong, stiff, hard plastics with almost unlimited color possibilities. Articles made from these plastics have a high gloss and are suitable for use in contact with food.