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Product Name: Zinc Sulfate Heptahydrate
Chemical Formula: ZnSO4 • 7H2O
Synonyms: White vitriol, Zinc sulphate 7-water
CAS Number: 7446-20-0
Recommended Use: Fertilizer ingredient, feed additive, laboratory reagent, micronutrient
Supplier Details: Contact phone numbers for emergency assistance, local distributor information
Emergency Contact: Local poison control center, national chemical emergency response
GHS Classification: Acute Toxicity (Oral) Category 4, Eye Irritation Category 2A, Aquatic Acute Category 1, Aquatic Chronic Category 1
Pictograms: Exclamation mark, environmental hazard symbol
Signal Word: Warning
Hazard Statements: May cause respiratory, skin and eye irritation; harmful if swallowed; highly toxic to aquatic life with long lasting effects
Precautionary Statements: Wash thoroughly after handling; avoid release to the environment; wear protective gloves, clothing and eye protection
Routes of Exposure: Inhalation, skin, eye, ingestion
Health Effects: May lead to gastrointestinal distress, nausea, vomiting, abdominal cramps, dermatitis, and eye redness; inhalation could result in upper respiratory tract irritation
Chemical Name: Zinc Sulfate Heptahydrate
Concentration: Greater than 99% by weight
Component: Zinc, sulfate, water of hydration
Impurities: Trace amounts of lead, cadmium or other heavy metals sometimes present
Molecular Weight: 287.54 g/mol
General Advice: Seek professional medical help for persistent symptoms
Inhalation: Move outdoors, breathe fresh air. Seek medical attention if discomfort persists.
Skin Contact: Remove contaminated clothing. Rinse skin with soap and water.
Eye Contact: Flush eyes thoroughly with water for at least 15 minutes, lifting eyelids; remove contact lenses if present; do not rub eyes.
Ingestion: Rinse mouth; do not induce vomiting unless instructed by medical personnel. Drink water to dilute if conscious.
Warning Signs Requiring Immediate Care: Persistent cough, trouble breathing, severe rash, vision changes, continued vomiting or diarrhea.
Flammability: Non-flammable in solid state
Suitable Extinguishing Media: Use media appropriate for surrounding fire (foam, CO2, dry chemical, water spray)
Unsuitable Extinguishing Media: No known special requirements for extinguishing agents
Hazardous Combustion Products: Sulfur oxides, zinc oxides can form at high temperatures
Protective Equipment for Firefighters: Self-contained breathing apparatus and full protective clothes
Special Procedures: Prevent firefighting water runoff from contaminating waterways
Personal Precautions: Use personal protective equipment for skin and eyes, ensure adequate ventilation
Environmental Precautions: Prevent spillage from entering soil, drains or watercourses
Cleanup Methods: Scoop up material for recovery or disposal; avoid raising dust; wash residual area with plenty of water
Emergency Procedures: Alert appropriate authorities if a large spill threatens the environment; secure the area to limit access; use spark-free tools
Handling: Wear appropriate PPE (protective gloves, goggles, labs coats). Avoid generating or breathing dust. Properly label containers.
Storage: Keep container tightly closed in a cool, dry, well-ventilated place. Store away from incompatible materials such as strong acids and bases. Protect from humidity and direct sunlight.
Incompatible Materials: Strong oxidizing agents, alkalis, and water-reactive substances
Hygiene Measures: Wash hands thoroughly after handling, keep work area clean, and store away from foods and drinking water
Exposure Limits: OSHA PEL (Zinc): 1 mg/m3 (as Zn), ACGIH TLV (Zinc): 2 mg/m3 TWA (as Zn)
Engineering Controls: Local exhaust ventilation, dust collection, fume hood in laboratory settings
Respiratory Protection: Use NIOSH-approved dust mask or respirator if dust forms
Hand Protection: Impermeable gloves (nitrile, PVC or equivalent)
Eye Protection: Chemical safety goggles or face shield
Skin and Body Protection: Laboratory coat, protective suit as necessary
General Precautions: Do not eat, drink or smoke while working; always wash thoroughly before breaks or after work shift
Appearance: Colorless or white crystalline solid
Odor: Odorless
Solubility: Highly soluble in water
Melting Point: Decomposes before melting, around 100°C
Boiling Point: Not applicable, decomposes
pH: 4-6 (5% solution)
Molecular Formula: ZnSO4 • 7H2O
Density: 1.957 g/cm3
Vapor Pressure: Not relevant under normal use
Evaporation Rate: Not applicable
Partition Coefficient: Not available; does not bioaccumulate significantly
Chemical Stability: Stable under recommended handling and storage conditions.
Conditions to Avoid: Avoid excessive heat, incompatible materials, and moisture.
Decomposition Products: Hazardous gases such as sulfur oxides and zinc oxides may form if heated strongly.
Incompatible Materials: Strong bases, oxidizing agents, alkalis.
Hazardous Polymerization: Does not polymerize.
Routes of Exposure: Oral, inhalation, dermal, ocular
Acute Toxicity (Oral LD50): Rat: 2150 mg/kg
Acute Toxicity (Inhalation): Dust can irritate upper respiratory tract
Skin Corrosion/Irritation: Can cause mild to moderate irritation with prolonged exposure
Eye Damage/Irritation: Potential for significant irritation and redness
Sensitization: Not a known sensitizer
Chronic Effects: Overexposure to zinc compounds through ingestion may result in gastrointestinal upset, nausea, vomiting, diarrhea, stomach cramps. Chronic exposure can impact copper metabolism.
Carcinogenicity: Not listed as a carcinogen by IARC, NTP or OSHA
Mutagenicity/Reproductive Toxicity: No expected mutagenic or reproductive hazards under normal industrial or laboratory handling
Ecotoxicity: Very toxic to aquatic life with long-lasting effects. LC50 for fish (rainbow trout): ~0.47 mg/L (96h).
Persistence and Degradability: Not readily biodegradable. Dissolves in water forming zinc ions, which are persistent in the environment.
Bioaccumulative Potential: Zinc ions may accumulate in aquatic organisms.
Mobility in Soil: Mobile in moist soils and can migrate to groundwater in significant quantities.
Other Adverse Effects: Zinc is an essential element but excess causes toxicity in plants and animals. Prevent release to the environment beyond recommended application rates.
Waste Treatment Methods: Follow all local, regional, and national regulations. Do not discharge into waterways, storm drains or soils.
Waste Disposal: Contaminated packaging and materials require disposal in approved landfill or incineration facility.
Special Precautions: Label and handle wastes as hazardous when returning unused product. Rinse emptied packages before recycling or disposal.
EPA Waste Number: Unlisted for household use but managed as hazardous for bulk industrial use.
UN Number: UN3077
UN Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (zinc sulfate heptahydrate)
Transport Hazard Class: Class 9 (Miscellaneous dangerous substances and articles)
Packing Group: III
Environmental Hazards: Marine pollutant
Special Precautions for User: Ensure packaging is secure and labeled; avoid spillage during transport.
Transport Regulations: Compliant with IMDG, IATA, DOT for land, sea and air transit
OSHA Status: Regulated as hazardous due to acute toxicity and environmental hazard.
TSCA Inventory: Listed
EPCRA Section 313: Subject to reporting as a toxic chemical.
SARA 311/312 Hazard Categories: Acute health hazard; environmental hazard
RCRA Status: Not classified as a hazardous waste in consumer quantities.
EU Classification: Harmful (Xn), Dangerous for the environment (N); R22, R41, R50/53
Labeling Requirements: DOT, GHS, and WHMIS labeling; application of hazard statements, pictograms, and precautionary instructions on packaging
