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Zinc Sulfate Heptahydrate ( ZnSO4 * 7H2O ) - 1000g
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Description
Zinc Sulfate Heptahydrate
Other Names: Zinc(II) sulfate heptahydrate, White vitriol
Chemical Formula: ZnSO₄·7H₂O
Molar Mass: 287.54 g/mol
CAS Number: 7446-20-0
Appearance: Colorless to white crystalline solid
Odor: Odorless
Zinc sulfate heptahydrate is an inorganic compound commonly used in chemical processing, materials synthesis, water treatment, and electroplating. It readily dissolves in water to form a clear solution of Zn²⁺ and SO₄²⁻ ions.
Chemical and Physical Properties
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Density: ~1.97 g/cm³
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Melting Point: ~100 °C (loses water of crystallization)
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Boiling Point: Decomposes before boiling
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Solubility in Water: 96.5 g/100 mL at 20 °C
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Solubility in Other Solvents: Insoluble in ethanol and ether
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pH (1% solution): ~4.5–5.5
Applications
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Chemical Synthesis: Source of Zn²⁺ ions for reactions, synthesis of other zinc salts.
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Electroplating: Used as an electrolyte in zinc plating processes.
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Textile Industry: Employed as a mordant in dyeing.
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Water Treatment: Occasionally used in industrial systems for coagulation or algae control.
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Laboratory Reagent: Applied in analytical chemistry and preparation of standard zinc solutions.
Safety
Signal Word: ⚠️ Warning
H302 (85.5%): Harmful if swallowed [Warning Acute toxicity, oral]
H315 (14.3%): Causes skin irritation [Warning Skin corrosion/irritation]
H318 (85.7%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
H319 (14.3%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (14%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
H400 (85%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
H410 (85.5%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]
P261, P264, P264+P265, P270, P271, P273, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, P319, P321, P330, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, and P501
Handling and Storage
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Handling: Avoid dust formation. Ensure good ventilation at the workplace. Use appropriate personal protective equipment.
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Storage: Store in a tightly closed container in a dry, cool, and well-ventilated place. Protect from moisture and incompatible materials (e.g., strong bases).
Environmental Considerations
Zinc compounds are toxic to aquatic life. Prevent accidental release into sewers or waterways. Collect and dispose of waste properly according to local environmental regulations.