Cellulose Acetate Butyrate
CAB
- CAS
- 9004-36-8
- EC
- 232-684-8
- Sectors
- Coatings, Adhesives, Sealants & Elastomers, Plastics & Polymers, Printing & Packaging
Cellulose Acetate Butyrate (CAS 9004-36-8) is a thermoplastic ester of cellulose produced by esterifying cellulose with acetic and butyric acids, supplied as a white, fibrous granular powder, and used in coatings, plastics, inks and adhesives. It is a white powder or pellet, density 1.25 g/mL, melting point 127-240°C, refractive index 1.475, soluble in acetone and esters, insoluble in water.
Typical Properties
| Appearance | white, fibrous solid |
|---|---|
| Form | Granular Crystalline Powder |
| Color | White |
| Odor | Odorless |
| Melting point | 171-200 °C |
| Density | 1.25 g/cm³ @ Temp: 25 °C |
| HS code | 39129000 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Cellulose Acetate Butyrate
Applications
Used in coatings for glossy lacquers, chemical-resistant fabrics, and automotive paints; in plastics for films and molds; in adhesives, inks, and as a binder in pharmaceuticals; in wire coatings and optical films for durability and flexibility.
Safety & Risks
Low toxicity but dust may irritate eyes and respiratory tract; combustible, avoid heat sources. Stable under ambient conditions; incompatible with strong oxidizers causing fires. California Prop 65 warning for cancer risk; use PPE and ventilation.
Packaging
In 25kg bags or drums with secure closures; store in cool, dry areas; rinse triply for recycling or puncture packaging for landfill disposal.