Zinc sulfate CAS No.: 7733-02-0

 ZINC SULFATE

CAS No.: 7733-02-0
Molecular Formula: ZnSO₄ (anhydrous) / ZnSO₄·7H₂O (heptahydrate)
Molecular Weight: 161.47 g/mol (anhydrous) | 287.56 g/mol (heptahydrate)

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1. SPECIFICATIONS

Parameter	Standard Value
Appearance	White crystalline solid
Content (Purity)	≥99.5%
pH (5% aqueous solution)	4.4–6.0
Water Insoluble Matter	≤0.01%
Chloride (Cl)	≤0.0005%
Total Nitrogen (N)	≤0.001%
Arsenic (As)	≤0.00005%
Manganese (Mn)	≤0.0003%
Iron (Fe)	≤0.0005%
Copper (Cu)	≤0.001%
Cadmium (Cd)	≤0.0005%
Lead (Pb)	≤0.001%
Ammonium Sulfide Precipitate	≤0.05%

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2. PHYSICAL & CHEMICAL PROPERTIES

Solubility: Highly soluble in water (96.5 g/100 mL at 20°C).Density: 1.97 g/cm³ (anhydrous) | 2.07 g/cm³ (heptahydrate).Melting Point: 680°C (anhydrous, decomposes) | 100°C (heptahydrate, loses water).Hygroscopicity: Absorbs moisture from air (heptahydrate form).

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3. HAZARD & SAFETY (GHS)

Hazard Code	Risk Statement	Precautionary Measures
H315	Causes skin irritation.	Wear gloves/protective clothing.
H319	Causes serious eye irritation.	Use eye protection.
H335	May cause respiratory irritation.	Use in well-ventilated areas.

NFPA Rating: Health 1 | Flammability 0 | Reactivity 0.

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4. STORAGE & HANDLING

Storage: Cool, dry, ventilated area; avoid sunlight and moisture.Packaging: 25 kg/bag, drum, or as per buyer’s request.Shelf Life: 24 months if stored properly.

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5. APPLICATIONS

Industrial:Mordant in dyeing & printing.Wood preservative & paper bleaching agent.Chemical:Electroplating, electrolysis, zinc salt production.Agricultural:Fertilizer additive (zinc supplement).Pharmaceutical:Astringent in medical formulations.

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6. REGULATORY COMPLIANCE

REACH: Registered in EU.TSCA: Listed (USA).Transport: Non-hazardous for general transport.

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