ZINC OXIDE

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.


Applications

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.

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Key Properties

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.