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Chemical Name: Zinc Sulfate Monohydrate
Synonyms: Zinc Sulfate, Monohydrate; Zinc(II) Sulfate Monohydrate
CAS Number: 7446-19-7
Molecular Formula: ZnSO₄ · H₂O
Molecular Weight: 179.47 g/mol
Intended Use: Agriculture, laboratory reagent, animal feed supplement, industrial manufacturing
Supplier: Contact relevant supplier for up-to-date information
Emergency Number: Refer to local, national, or international emergency support
GHS Classification: Acute Toxicity (Oral, Category 4), Skin Irritation (Category 2), Eye Irritation (Category 2A), Hazardous to the aquatic environment (Acute and Chronic, Category 1)
Signal Word: Warning
Hazard Statements: Harmful if swallowed, causes skin and serious eye irritation, very toxic to aquatic life with long-lasting effects
Pictograms: Exclamation Mark, Environment
Precautionary Statements: Avoid release to the environment, wash hands thoroughly after handling, wear protective equipment, avoid ingestion or inhalation
Chemical Identity: Zinc Sulfate Monohydrate
Concentration: 99-100% by weight
Impurities: Heavy metals (as Pb, Cd, As) trace amounts, typically below regulatory thresholds for industrial grades
Relevant Constituents: Zinc ion, sulfate ion, water of hydration
Inhalation: Remove to fresh air, keep at rest in a position comfortable for breathing, seek medical attention if symptoms persist
Skin Contact: Wash continuously with soap and water for several minutes, remove contaminated clothing, seek medical care for persistent irritation
Eye Contact: Rinse cautiously with water for several minutes, remove contact lenses if present, continue rinsing, seek immediate medical attention if irritation occurs
Ingestion: Rinse mouth, do not induce vomiting, get medical assistance
Symptoms: Nausea, vomiting, stomach pain, diarrhea, skin or eye redness
Suitable Extinguishing Media: Use water spray, dry chemical, or carbon dioxide for small fires
Unsuitable Media: Do not use high-pressure water streams
Specific Hazards: Decomposition may release toxic and irritating gases including sulfur oxides and zinc oxides
Special Protective Equipment: Firefighters should use self-contained breathing apparatus and full protective gear
Firefighting Instructions: Move containers from fire area if possible, use water spray to keep fire-exposed containers cool
Personal Precautions: Evacuate unnecessary personnel, use protective clothing and respiratory protection to avoid dust
Environmental Precautions: Prevent entry into waterways, drains, or soil, collect spillage promptly
Cleanup Methods: Sweep up material, avoid generating dust, collect in containers for proper disposal, ventilate area
Decontamination: Wash spill area with water, collect rinsate for disposal
Handling: Avoid contact with eyes, skin, and clothing, avoid breathing dust, use only with adequate ventilation, wash thoroughly after handling, keep chemical away from food and animal feed
Storage Conditions: Store in a tightly closed container in a cool, dry, well-ventilated area, keep away from incompatible substances such as strong acids or bases, label containers clearly, protect from moisture and direct sunlight
Packaging Materials: Use corrosion-resistant containers, check regularly for integrity
Exposure Limits: OSHA PEL (as Zinc): 1 mg/m³ TWA (respirable fraction), ACGIH TLV: 2 mg/m³ (TWA, as Zn)
Engineering Controls: Use local exhaust ventilation, process enclosures, or general dilution ventilation to minimize exposure
Personal Protective Equipment: Safety goggles, chemical-resistant gloves, protective clothing, dust mask or respirator (certified for particulates/P2 or N95 class)
Hygiene Measures: Do not eat, drink, or smoke during handling, wash hands before breaks and at end of workshift
Appearance: White crystalline powder or granules
Odor: Odorless
pH (10% Solution): Approximately 4.4 - 5.6
Melting Point: 100 °C (decomposes, loses water of crystallization)
Boiling Point: Not applicable
Solubility in Water: 960 g/L at 20°C
Density: 3.28 g/cm³
Partition coefficient (n-octanol/water): Not established
Vapor Pressure: Not relevant at standard conditions
Other Data: Stable under normal storage and handling conditions
Chemical Stability: Stable in dry air, slowly effloresces in moist air and loses water of crystallization
Conditions to Avoid: Exposure to moisture, heat, incompatible materials
Incompatible Materials: Strong oxidizers, alkalis, borax
Hazardous Decomposition Products: Sulfur oxides, zinc oxides
Reactivity: Not known to be sensitive to mechanical impact or static discharge
Routes of Exposure: Ingestion, inhalation, eye and skin contact
Acute Toxicity: Oral LD50 (rat): 2150 mg/kg; Inhalation LC50 not established
Irritation: Skin and eye irritant
Chronic Effects: Prolonged or repeated exposure may cause gastrointestinal disturbance, reduction in immune function, anemia
Sensitization: Not regarded as a sensitizer
Carcinogenicity, Mutagenicity, Reproductive Toxicity: Not classified as carcinogenic, data insufficient for other endpoints
Symptoms of Overexposure: Nausea, vomiting, diarrhea, abdominal pain, mucosal irritation
Ecotoxicity: Zinc compounds highly toxic to aquatic organisms, rapid adverse effects on invertebrates and some fish species
Persistence and Degradability: Inorganic, does not biodegrade, zinc persists in aquatic and terrestrial environments
Bioaccumulation Potential: Zinc can accumulate in aquatic organisms, potential for biomagnification in food chains
Mobility in Soil: Soluble and mobile in water, significant leaching into soil and groundwater possible
Other Harmful Effects: Disrupts aquatic life even at low concentrations, needs firm control of runoff and disposal
Waste Treatment: Store waste in labeled, sealed containers, follow local, regional, and national regulations
Methods: Dispose via licensed chemical waste contractors, do not release into sewers, water bodies, or uncontrolled landfills
Contaminated Packaging: Triple rinse containers, puncture to avoid reuse, dispose of as hazardous waste
Special Precautions: Prevent environmental contamination, document all disposals for regulatory compliance
UN Number: 3077
UN Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (contains Zinc Sulfate Monohydrate)
Transport Hazard Class: 9 (Miscellaneous dangerous substances and articles)
Packing Group: III
Marine Pollutant: Yes
Special Precautions: Secure packaging to prevent leaks, maintain placards if required, follow regulations for transport by road, rail, air, or sea
Regulatory References: IMDG, IATA, ADR guidelines
Relevant Regulations: OSHA Hazard Communication Standard, US EPA TSCA Inventory, EU REACH Registered, Canadian WHMIS Listed, Australia AICS
Hazard Symbol: GHS07 (Exclamation mark), GHS09 (Environmental)
R/S-phrases: R22: Harmful if swallowed; R36/38: Irritating to eyes and skin; R50/53: Very toxic to aquatic organisms, may cause long-term adverse effects
Signal Words: Harmful, Irritant, Dangerous for the environment
Local Requirements: Consult national and regional legislation for workplace safety, environmental protection, and waste management
