General Information:
Chemical Name: Zinc Oxide
Molecular Formula: ZnO
Appearance: Fine, white, odorless powder.
Specifications:
Purity:
Minimum 99% ZnO content.
pH:
6.0 to 8.0 (10% aqueous suspension).
Solubility:
In Water: Insoluble.
In Dilute Acids: Soluble.
In Alkalis: Soluble.
Heavy Metals:
Lead (Pb): Not more than 20 ppm.
Arsenic (As): Not more than 5 ppm.
Loss on Ignition:
Should not exceed 1.0% when heated at 800C.
Particle Size:
Ultra-fine or micronized (varies by application).
Odor:
Odorless.
Applications:
Pharmaceuticals: Creams, ointments, and calamine lotion.
Cosmetics: Sunscreens, powders, and acne treatments.
Complies With:
Standards set by the British Pharmacopoeia (BP).