Material Safety Data Sheet: Copper Acetate Monohydrate

Identification

Product Name: Copper Acetate Monohydrate
Chemical Formula: Cu(CH₃COO)₂·H₂O
CAS Number: 6046-93-1
Synonyms: Cupric Acetate Monohydrate, Acetic Acid Copper(II) Salt Monohydrate
Recommended Use: Laboratory reagent, catalyst, pigment manufacturing, textile dyeing
Supplier Details: Always include address and contact phone number of the supplier for emergencies and technical support
Emergency Phone: Suppliers often provide a 24-hour emergency number

Hazard Identification

GHS Classification: Acute Toxicity (Oral) Category 4, Skin Irritation Category 2, Eye Irritation Category 2A, Aquatic Acute Category 1, Aquatic Chronic Category 2
Hazard Statements: Harmful if swallowed, causes skin irritation, causes serious eye irritation, very toxic to aquatic life with long-lasting effects
Pictograms: Exclamation mark, Environment
Signal Word: Warning
Precautionary Statements: Avoid breathing dust, wash hands thoroughly after handling, avoid release to environment, wear protective gloves, clothing, eye and face protection, keep away from food and drink sources, avoid contact with skin and eyes

Composition / Information on Ingredients

Chemical Name: Copper(II) Acetate Monohydrate
CAS Number: 6046-93-1
Percentage: 100% by weight
Impurities and Stabilizing Additives: No intentionally added impurities or stabilizing additives that materially affect substance classification

First Aid Measures

Inhalation: Move individual to fresh air. Ensure breathing is normal, administer oxygen if breathing is difficult. Seek medical attention for symptoms like coughing or shortness of breath.
Skin Contact: Remove contaminated clothing. Wash exposed skin with soap and plenty of water for at least 15 minutes. Medical attention required if irritation persists or exposure is prolonged.
Eye Contact: Flush eyes immediately with large amounts of water for at least 15 minutes, lifting upper and lower eyelids occasionally. Seek immediate medical attention.
Ingestion: Rinse mouth with water if conscious. Do not induce vomiting. Never give anything by mouth to an unconscious person. Seek medical attention without delay.
Most Important Symptoms and Effects: Severe irritation of the gastrointestinal tract, possible abdominal pain, nausea, vomiting, and diarrhea, copper poisoning with high or repeated doses
Advice for Medical Providers: Symptomatic treatment. Monitor for signs of copper toxicity, particularly in the liver and kidneys.

Fire-Fighting Measures

Suitable Extinguishing Media: Water spray, dry chemical, carbon dioxide, foam. Use firefighting agents suitable for surroundings.
Specific Hazards from Fire: On decomposition, produces irritating and toxic fumes, including copper oxides and acetic acid vapors.
Protective Equipment: Use positive-pressure self-contained breathing apparatus and full protective gear to prevent skin and eye contact. Avoid inhaling decomposition products.
Special Firefighting Procedures: Keep unnecessary personnel out. Prevent runoff into sewers or waterways. Move containers from fire area if safe to do so. Cool closed containers exposed to fire with water spray.

Accidental Release Measures

Personal Protections: Wear chemical-resistant gloves, protective clothing, eye protection, and dust mask or respirator suitable for particulates.
Environmental Precautions: Avoid discharge to water sources, soil, or drains. Prevent further leakage or spillage if safe.
Methods for Containment and Cleanup: Vacuum or scoop up material, avoid generating dust. Place in a suitable, labeled container for recycling or disposal. Use non-sparking tools. Wash residue with plenty of water.
Decontamination: Area can be washed with water after material is collected. Properly collect and dispose of rinsate.

Handling and Storage

Handling: Work in a well-ventilated area, minimize dust generation, avoid contact with skin, eyes, and clothing, wash hands after handling. Do not eat, drink, or smoke when working with or near the substance.
Storage: Keep the container tightly closed in a cool, dry, well-ventilated place. Store away from incompatible substances such as strong acids, strong bases, oxidizing agents. Prevent unauthorized access.
Incompatible Materials: Storage near acids, bases, and ammonium salts can cause hazardous reactions.

Exposure Controls and Personal Protection

Occupational Exposure Limits: OSHA PEL (as Copper dust and mists): 1 mg/m³ (TWA), ACGIH TLV: 1 mg/m³ (TWA, as Cu)
Engineering Controls: Use local exhaust, process enclosure, or other engineering controls to maintain airborne levels below recommended exposure limits.
Personal Protective Equipment:
- Respiratory Protection: NIOSH/MSHA-approved respirators for dust or mists
- Hand Protection: Chemical resistant gloves
- Eye Protection: Safety goggles or face shield
- Skin Protection: Protective lab coat, apron, or coveralls
- Hygiene: Wash hands and contaminated skin before eating or drinking. Remove contaminated clothing and wash before reuse

Physical and Chemical Properties

Appearance: Blue-green crystalline solid
Odor: Slight acetic acid odor
Odor Threshold: No data available
pH: Approximately 4.4 (50 g/L water solution at 20°C)
Melting Point/Freezing Point: Decomposes at 115°C (239°F)
Boiling Point: Information not available (decomposes before boiling)
Solubility in Water: Soluble (7.2 g/100 mL at 20°C)
Vapor Pressure: Not applicable
Relative Density: 1.88 g/cm³ at 20°C
Partition Coefficient (n-octanol/water): No data available
Evaporation Rate: Not applicable
Flash Point: Not applicable (non-combustible)
Flammability: Non-flammable
Auto-Ignition Temperature: Not applicable

Stability and Reactivity

Chemical Stability: Stable under normal temperatures and pressures when stored properly
Reactivity: Material reacts with strong acids and bases, ammonium salts may produce toxic gases
Possibility of Hazardous Reactions: Hazardous decomposition occurs with exposure to heat, acids, or reducing agents
Conditions to Avoid: Excess heat, moisture, exposure to light
Incompatible Materials: Strong oxidizers, acids, alkalis, ammonium salts
Hazardous Decomposition Products: Copper oxides, acetic acid vapors, irritating organic fumes

Toxicological Information

Acute Toxicity: Harmful if swallowed. LD₅₀ (oral, rat): 710 mg/kg
Skin Corrosion/Irritation: Causes skin irritation, redness, and discomfort on contact
Serious Eye Damage/Irritation: Strong irritant to eyes, risk of conjunctivitis
Respiratory Sensitization: Prolonged dust inhalation can cause respiratory tract irritation
Carcinogenicity: No known carcinogenic properties for copper acetate
Germ Cell Mutagenicity: Not classified as mutagenic
Reproductive Toxicity: Information not sufficient to conclude reproductive hazard
STOT (Single Exposure): May cause gastrointestinal irritation, nausea, vomiting, diarrhea
STOT (Repeated Exposure): Prolonged exposure to copper compounds has been associated with liver, kidney, and blood effects
Other Health Effects: Excessive absorption of copper may lead to metal fume fever, hemolysis, possible kidney and liver damage with repeated or high-dose exposure

Ecological Information

Toxicity to Aquatic Life: Highly toxic to aquatic organisms. LC₅₀ (24h, fish): 0.26 mg/L (as Cu²⁺)
Persistence and Degradability: Copper is not biodegradable. Persists in aquatic and soil environments
Bioaccumulative Potential: Accumulates in aquatic plants and animals. Chronic exposure affects ecological balance
Mobility in Soil: Moderately mobile. Can leach into groundwater, especially in acidic conditions
Other Adverse Effects: Copper residues disrupt fish and invertebrate lifecycles, affect plant root development, and alter soil microflora
Precautions: Prevent uncontrolled release to environment. Always collect and properly manage spills and residues

Disposal Considerations

Waste Treatment Methods: Collect and contain spills or residues in clearly labeled, compatible containers. Arrange for disposal through a licensed hazardous waste contractor
Disposal of Product: Never dispose of in regular trash, drains, or environment. Follow state, local, and national disposal regulations for hazardous copper compounds
Disposal of Contaminated Packaging: Triple-rinse, crush, or puncture containers to prevent reuse. Dispose of as hazardous waste
Additional Guidance: incineration may release toxic copper fumes. Engage qualified waste authorities for further protocols

Transport Information

UN Number: UN3077 (Environmentally Hazardous Substance, Solid, n.o.s.)
Proper Shipping Name: Environmentally hazardous substance, solid, n.o.s. (contains Copper Acetate Monohydrate)
Transport Hazard Class: 9 (Miscellaneous dangerous substances and articles)
Packing Group: III
Environmental Hazards: Marine pollutant
Special Precautions: Keep container tightly sealed. Protect from accidental spillage and environmental release. Transport with documentation that lists MSDS and hazard classification
Regulations: Subject to IATA, IMDG, and DOT regulations for hazardous materials

Regulatory Information

OSHA: Classified as hazardous under OSHA Hazard Communication Standard
TSCA: Listed in the U.S. Toxic Substances Control Act Inventory
SARA Title III: Subject to Sections 302 (EHS), 311/312 (Hazard Categories), 313 (Toxic Release Inventory Reporting) as a copper compound
RCRA (Resource Conservation and Recovery Act): Waste number D001, listed hazardous waste
EU Regulations: Listed on EINECS/ELINCS (EC No. 206-935-8)
WHMIS (Canada): Classified as toxic and dangerous for the environment
Other International Inventories: Compliant with local, national, and international chemical inventory regulations
Labeling Requirements: Ensure proper GHS-compliant hazard labeling, safety instructions, and emergency information on all packaging and workplace containers