Zinc Oxide
Zinc White, Calamine
- CAS
- 1314-13-2
- EC
- 215-222-5
- Sectors
- Personal Care & Cosmetics, Rubber & Elastomers, Coatings, Adhesives, Sealants & Elastomers
Zinc Oxide (CAS 1314-13-2) is a white to pale yellow amphoteric inorganic powder, available as a nanopowder, that absorbs UV radiation and shows thermal stability and antimicrobial activity; it is used in rubber vulcanization, ceramics, pigments, sunscreens and pharmaceuticals. It can be produced via direct (French) or indirect (American) processes.
Typical Properties
| Molecular formula | OZn |
|---|---|
| Molecular weight | 81.39 g/mol |
| Appearance | white powder |
| Form | nanopowder |
| Color | White to pale yellow |
| Odor | wh. to gray powd. or crystals, odorless, bitter taste |
| Melting point | 1975 °C |
| Density | 5.607 g/cm³ @ Temp: 20 °C |
| Water solubility | 1.6 mg/L (29 °C) |
| Flash point | 27°C |
| pH | 7 (50g/l, H2O, 20°C)(slurry) |
| GHS signal word | Warning · Health hazard, Environmental hazard |
| HS code | 28170000 |
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.
Zinc Oxide
Applications
Used in rubber vulcanization, ceramics, pigments, sunscreens, and pharmaceuticals. It enhances UV protection in personal care and improves mechanical strength in rubber and coatings.
Safety & Risks
Low toxicity but may cause irritation via inhalation. Avoid high-temperature exposure to prevent fume generation.
Packaging
Delivered in 25–50 kg bags or FIBCs. Store cool, dry, and sealed to prevent moisture absorption.