Chemical Formula: ZnO
Molecular Weight: 81.38 g/mol
Description:
Zinc Oxide is a white, fine, amorphous or crystalline powder, insoluble in water but soluble in acids and alkalis. It exhibits excellent opacity, whiteness, and UV-blocking properties, making it one of the most versatile inorganic compounds used across multiple industries.
Depending on grade and process, it is available as White Seal, Active, Paint, or Rubber Grade, each suited for specific industrial applications such as rubber compounding, ceramics, paints, cosmetics, and pharmaceuticals.
Rubber Industry:
Used as a vulcanizing agent and activator, improving tensile strength, elasticity, and aging resistance.
Paints & Coatings:
Provides whiteness, opacity, and UV protection; prevents fungal growth and discoloration.
Ceramics & Glass:
Enhances gloss, opacity, and chemical durability in glazes and enamels.
Pharmaceuticals & Cosmetics:
Acts as a skin protectant, sunscreen, and antiseptic in ointments, powders, and creams.
Electronics & Batteries:
Used in semiconductors, ferrites, and zinc-based battery cathodes.
| Property | Description |
|---|---|
| Appearance | White, fine powder |
| Purity (Assay) | ≥ 99% (ZnO) |
| Solubility | Insoluble in water; soluble in acids and alkalis |
| pH (10% suspension) | ~7.0 – 8.0 |
| Bulk Density | ~0.3 – 0.6 g/cm³ |
| Specific Gravity | ~5.6 |
| Loss on Ignition | ≤ 1.0% |
| Residue on 325 mesh | ≤ 0.2% |
| Grade | Paint / Rubber / Cosmetic / Active / Technical |
| Packaging | 25 kg / 50 kg HDPE or kraft paper bags |
| Storage | Store in a cool, dry, and well-ventilated area away from moisture, acids, and foodstuffs. Keep container tightly sealed. |