Zinc Sulfate Heptahydrate

Zinc Sulfate Heptahydrate

CAS Number:7446‑20‑0

Synonyms:Zinc sulfate heptahydrate; Zinc sulphate hepta; White vitriol; Goslarite

Chemical Formula:ZnSO₄ · 7H₂O

Molecular Weight:~287.54–287.56 g/mol

Product Introduction

A white, crystalline, hygroscopic salt with a mild astringent taste. A commonly used reagent in analytical chemistry, agriculture (zinc fertilizer), pharmaceuticals (supplements), textile and rayon production, and water treatment .

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Physical & Chemical Properties

Property Value
Appearance White crystalline powder or granules
Density ~1.95–1.97 g/cm³
Melting Point ~100 °C (loses water); decomposition follows
Solubility in Water ~960 g/L @20 °C
pH (50 g/L, 20 °C) ~4–6
Specific Gravity ~1.0–1.1 g/mL bulk

Applications

  • Nutrition: dietary zinc supplement; anti-diarrheal in ORT solutions
  • Industrial: dye mordant, rayon and textiles, electroplating, paper bleaching
  • Laboratory: reagent grade ACS/ISO/USP/EP available; used in analysis and cell culture

Safety & Handling

  • Irritant—avoid inhalation and skin contact. May cause eye irritation. NFPA: Health 2, Fire 0, Reactivity 0. Storage stable though hygroscopic; keep in sealed containers below 30 °C. GHS: H302, H318, H410. LD₅₀ (oral, rat) 1,260 mg/kg

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