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Product Name: Zinc Acetate Dihydrate
Chemical Formula: C4H6O4Zn·2H2O
CAS Number: 5970-45-6
Synonyms: Zinc diacetate, Zinc ethanoate dihydrate
Recommended Uses: Laboratory reagent, chemical synthesis, catalyst, dietary supplement in animal feed, wood preservation
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GHS Classification: Acute toxicity (oral) Category 4, Skin irritation Category 2, Eye irritation Category 2A, Hazardous to aquatic environment (acute) Category 1
Signal Word: Warning
Hazard Statements: Harmful if swallowed. Causes skin irritation. Causes serious eye irritation. Very toxic to aquatic life.
Pictograms: Exclamation mark, environment
Precautionary Statements: Avoid release to the environment. Wear protective gloves, eye protection, face protection. Wash hands thoroughly after handling. Do not eat, drink or smoke when using this product.
Chemical Name: Zinc Acetate Dihydrate
CAS Number: 5970-45-6
Concentration: 99 – 100%
Impurities: None known with typical commercial products
Inhalation: Remove person to fresh air. Seek medical attention if breathing becomes difficult or symptoms persist.
Skin Contact: Remove contaminated clothing. Wash skin immediately with soap and water for at least 15 minutes. Get medical advice if irritation develops.
Eye Contact: Rinse cautiously with water for several minutes, holding eyelids open. Remove contact lenses if present and easy to do. Continue rinsing. Seek prompt medical advice.
Ingestion: Rinse mouth well. Do not induce vomiting unless directed by a medical professional. Get medical attention if stomach upset or symptoms occur.
Suitable Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or foam
Unsuitable Extinguishing Media: Do not use water jet directly
Specific Hazards: Emits toxic fumes of zinc oxide and acetic acid on decomposition. Containers may explode under fire conditions.
Firefighter Protection: Wear full protective clothing and self-contained breathing apparatus.
Explosion Data: Not explosive, dust may form explosive mixture with air in rare cases if transferred as a powder.
Personal Precautions: Wear protective equipment such as gloves, safety glasses, and a dust respirator if necessary. Evacuate unprotected personnel from area.
Environmental Precautions: Prevent entry into drains, sewers, and waterways. Avoid ground and surface water release.
Methods for Clean Up: Sweep up and place in suitable containers for reuse or disposal. Avoid dust formation. Clean spill area thoroughly to remove residue.
Reference to Other Sections: Follow local regulations for disposal. Consult appropriate authorities if large quantities are released.
Handling: Use in a well-ventilated area. Avoid generating dust. Minimize contact with skin, eyes, and clothing. Maintain good hygiene practices after handling.
Storage: Keep tightly closed in a dry, cool, well-ventilated place. Store away from food or animal feed. Container should be corrosion-resistant and compatible with zinc compounds.
Incompatible Materials: Strong oxidizing agents, strong acids, moisture sensitive materials.
Safe Storage Temperature: Below 30 °C (86 °F) recommended for best material integrity.
Occupational Exposure Limits: OSHA PEL (Zinc oxide, respirable dust): 5 mg/m³ TWA. ACGIH TLV (Zinc oxide): 2 mg/m³ TWA, 10 mg/m³ STEL (respirable dust).
Engineering Controls: Use adequate ventilation to keep airborne concentrations below occupational limits. When transferring large quantities, local exhaust is necessary.
Personal Protective Equipment: Protective gloves (nitrile or latex), safety goggles or face shield, lab coat or apron. Dust mask or respirator if dust levels approach limits.
Hygiene Measures: Wash hands before eating, drinking, or smoking. Remove contaminated clothing immediately and wash before reuse.
Appearance: White crystalline solid
Odor: Slight acetic (vinegar-like) smell
Odor Threshold: Not established
pH: 5.0 – 6.0 (5% solution in water)
Melting Point: 237 °C (decomposes)
Boiling Point: Not applicable (decomposes at high temperature)
Solubility: Soluble in water and alcohol
Density: 1.84 g/cm³
Vapor Pressure: Negligible at room temperature
Partition Coefficient: Not determined
Evaporation Rate: Not applicable
Autoignition Temperature: Not self-igniting
Explosive Properties: No explosive properties
Oxidizing Properties: Not an oxidizer
Chemical Stability: Stable under normal storage and handling conditions
Reactivity: Non-reactive under recommended use and storage conditions
Incompatible Materials: Strong oxidizers, acids, alkalis, sources of ignition
Hazardous Decomposition Products: Zinc oxide fumes, acetic acid vapors, carbon oxides, under fire or high heat
Conditions to Avoid: High humidity, open flames, high temperatures
Polymerization: Will not occur
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Acute Toxicity: Oral LD50 (rat): 482 mg/kg
Skin Corrosion / Irritation: Causes skin irritation on contact
Serious Eye Damage / Irritation: Causes serious eye irritation
Sensitization: No data
Chronic Toxicity: May cause gastrointestinal effects and damage with prolonged exposure. No evidence of carcinogenicity in available sources.
Symptoms: Nausea, vomiting, abdominal cramps, dermatitis, conjunctivitis
Other Information: Pre-existing skin, respiratory, or digestive conditions may be aggravated by exposure.
Aquatic Toxicity: Very toxic to aquatic organisms
Persistence and Degradability: Does not degrade readily; accumulates in soil/sediment
Bioaccumulation Potential: Zinc can bioaccumulate in aquatic organisms; risk of trophic transfer
Mobility in Soil: Moderately mobile in soil; can leach to groundwater
Other Adverse Effects: High concentrations can alter aquatic habitats, impacting fish and invertebrate populations
Disposal Precautions: Prevent contamination of waterways and sewers with spilled material
Waste Disposal Methods: Collect and dispose of material in accordance with local, regional, national or international regulations. Small quantities may be diluted with a large amount of water and flushed to a treatment plant, if permitted. Avoid landfill unless approved for hazardous materials. Do not allow into soil, water, or drains.
Contaminated Packaging: Triple rinse containers. Dispose as hazardous waste or recycle where permitted.
Other Considerations: Contact registered waste disposal companies or local authority for guidance on proper waste management.
UN Number: UN3077
UN Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (Zinc Acetate Dihydrate)
Transport Hazard Class: 9 – Miscellaneous dangerous substances and articles
Packing Group: III
Environmental Hazards: Marine pollutant
Special Precautions: Keep container sealed in transit. Ensure correct hazard labeling.
Transport Regulations: Follow local and international laws for hazardous shipments. Inform all handlers of hazards and emergency procedures.
TSCA Inventory Status: Listed
REACH: Registered, no known restrictions
OSHA Hazard Communication: Covered as hazardous substance
SARA 302/304: Not listed
SARA 313: Zinc compounds subject to reporting
RCRA: May require listing as hazardous waste (check local designations)
WHMIS Classification (Canada): Class D2B – Toxic material causing other toxic effects
Other International Regulations: Compliant with applicable international chemical safety regulations.
