52907-01-4

Basic information

• Product Name: CELLULOSE ACETATE
• Synonyms: ACETYLCELLULOSE;CELLULOSE ACETATE TRIMELLITATE;CELLULOSE ACETATE;CELLULOSE ACETATE SAC 20;cellulose,acetate1,2,4-benzenetricarboxylate
• CAS NO: 52907-01-4
• Molecular Formula: C164H174O111
• Molecular Weight: 3921.06976
• Mol File: 52907-01-4.mol
• Article Data: 0

Chemical Properties

• Melting Point: 240-249 °C(lit.)
• Appearance: White/Fine Crystalline Powder
• 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)
• CAS DataBase Reference: CELLULOSE ACETATE(CAS DataBase Reference)
• NIST Chemistry Reference: CELLULOSE ACETATE(52907-01-4)
• EPA Substance Registry System: CELLULOSE ACETATE(52907-01-4)

Safety Data

• Safety Statements: 24/25
• Hazardous Substances Data: 52907-01-4(Hazardous Substances Data)

Usage

Chemical Properties

white fine crystalline powder

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.