Знание
Material Safety Data Sheet: Cobalt Sulfate Heptahydrate
Identification
Product Name: Cobalt Sulfate Heptahydrate
Chemical Formula: CoSO4·7H2O
CAS Number: 10026-24-1
Synonyms: Sulfuric acid, cobalt(2+) salt, heptahydrate; Cobaltous sulfate heptahydrate
Manufacturer: See supplier label for details
Use: Dye and pigment production, animal feed supplements, electroplating, catalysts, laboratory reagent
Hazard Identification
GHS Classification: Acute toxicity (oral, inhalation, dermal), Skin sensitization, Carcinogenicity, Eye irritation, Specific target organ toxicity
Signal Word: Danger
Hazard Statements: May cause cancer by inhalation, harmful if swallowed, may cause skin allergy, causes serious eye irritation, toxic to aquatic life with long-lasting effects
Pictograms: Health hazard, exclamation mark, environment
Precautionary Statements: Avoid breathing dust, wash thoroughly after handling, wear protective gloves/eye protection, avoid release to the environment
Composition / Information on Ingredients
Cobalt Sulfate Heptahydrate: 98-100%
Impurities: Trace metal salts (nickel, copper, iron), less than 1%
Hazardous components: No other hazardous components present above cutoff values requiring disclosure
First Aid Measures
Inhalation: Remove victim to fresh air, seek medical attention if symptoms persist or worsen, oxygen or artificial respiration if breathing is difficult
Ingestion: Rinse mouth, drink plenty of water, do not induce vomiting unless directed by medical professionals, consult physician immediately
Skin Contact: Wash affected area with soap and water, remove contaminated clothing and wash before reuse, seek medical attention for irritation or allergic symptoms
Eye Contact: Rinse with water for at least 15 minutes lifting eyelids occasionally, remove contact lenses if present and easy to do, seek immediate medical evaluation
Important Symptoms and Effects: Eye irritation, skin sensitization, respiratory discomfort, possible delayed allergic response
Medical Advice: Treat symptomatically, monitor for sensitization and systemic symptoms
Fire-Fighting Measures
Suitable Extinguishing Media: Use water spray, dry chemical, CO2, or foam extinguishers, avoid high pressure water streams
Specific Hazards: Product does not burn, may release toxic and corrosive gases such as sulfur oxides and cobalt oxides in fire conditions
Special Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective gear
Advice for Firefighters: Prevent runoff from entering drains and waterways, cool containers with water spray to prevent overheating
Accidental Release Measures
Personal Precautions: Restrict access to affected area, use personal protective equipment as described in Exposure Controls, avoid creating dust, ventilate area well
Environmental Precautions: Prevent material from entering sewers or waterways, notify relevant authorities in case of environmental release
Methods for Containment and Cleanup: Sweep or vacuum up carefully, avoiding dust, place in dry, closed containers for disposal or recovery, collect spillage for proper hazardous waste disposal, wash area with water after material pick-up
Handling and Storage
Safe Handling Advice: Use with adequate ventilation, avoid prolonged or repeated exposure, minimize dust generation and accumulation, avoid contact with skin, eyes, and clothing, always wash hands after handling
Safe Storage Conditions: Store in a tightly closed container in a cool, dry, well-ventilated place, keep separate from incompatible substances such as strong acids and bases, avoid moisture exposure to prevent caking
Incompatible Materials: Strong oxidizers and reducing agents, acids, bases, and combustible materials
Exposure Controls and Personal Protection
Occupational Exposure Limits: OSHA PEL: 0.1 mg/m3 (as Co), ACGIH TLV: 0.02 mg/m3 (as Co), NIOSH REL: 0.05 mg/m3
Engineering Controls: Use local exhaust ventilation and enclosure where possible, maintain airborne concentration below occupational limits
Personal Protective Equipment: Protective gloves (nitrile or PVC), safety glasses or chemical goggles, lab coat or apron, dust mask or NIOSH-approved respirator in dusty settings, protective footwear, emergency eye wash station within immediate workspace
Hygiene Measures: Remove contaminated clothing, wash before reuse, do not eat, drink, or smoke during handling, shower after work if risk of skin contact remains
Physical and Chemical Properties
Appearance: Pink to red crystalline solid
Odor: Odorless
Odor Threshold: Not applicable
pH (5% solution): About 4.0
Melting Point: 100°C (with loss of water)
Boiling Point: Decomposes
Solubility: Soluble in water (362 g/L at 20°C)
Vapor Pressure: Not applicable
Specific Gravity: 2.03
Partition Coefficient (n-octanol/water): Not available
Evaporation Rate: Not applicable
Flash Point: Not flammable
Decomposition Temperature: Above 100°C (loses water of hydration)
Molecular Weight: 281.1 g/mol
Stability and Reactivity
Chemical Stability: Stable under recommended storage conditions, not volatile
Reactivity: No dangerous reactions under normal conditions
Possibility of Hazardous Reactions: May react with strong acids or bases, generates toxic gases in fire conditions
Hazardous Decomposition Products: Sulfur oxides (SOx), cobalt oxides, possible hydrogen sulfide
Conditions to Avoid: Excess heat, moisture, incompatible materials
Toxicological Information
Acute Toxicity: LD50 (oral, rat) = 424 mg/kg; may cause gastrointestinal symptoms on ingestion
Skin Corrosion/Irritation: May cause irritation, possible sensitization after repeated contact
Eye Damage/Irritation: Causes serious eye irritation, possible corneal injury on direct contact
Respiratory or Skin Sensitization: Known skin sensitizer, respiratory sensitization possible in susceptible individuals
Carcinogenicity: Classified by IARC as Group 2B (possibly carcinogenic to humans), NTP acknowledges potential cancer risk from chronic inhalation
Germ Cell Mutagenicity: No data to classify
Reproductive Toxicity: Evidence of possible adverse effects on fertility in animal studies at high exposure levels
Specific Target Organ Toxicity: Chronic exposure may affect lungs, heart, thyroid, and blood
Symptoms: Cough, sore throat, shortness of breath, skin redness, conjunctival redness, dermatitis, allergy, headache, gastrointestinal upset
Potential Routes of Exposure: Inhalation, ingestion, skin, and eye contact
Ecological Information
Ecotoxicity: Toxic to aquatic organisms, acute and long-term effects possible in water environments, LC50 (fish, 96hr) = 31 mg/L, EC50 (daphnia) = 2.7 mg/L
Persistence and Degradability: Not rapidly degradable, persists in environment as metal ion
Bioaccumulative Potential: Moderate potential to bioaccumulate in aquatic organisms
Mobility in Soil: Cobalt ions may bind to soil particles, runoff risk increases with rainfall
Other Adverse Effects: Chronic exposure in water bodies may disrupt aquatic food chains, negative impact on freshwater and marine environments
Disposal Considerations
Waste Disposal Methods: Dispose of in accordance with local, regional, and national hazardous waste regulations, never landfill with household waste, incineration not recommended, recover and recycle if possible
Packing for Disposal: Use sealed, clearly labeled containers, keep away from drains and sewer systems during storage and transport
Contaminated Packaging: Decontaminate before recycling or dispose as chemical waste
Transport Information
UN Number: UN 3288
UN Proper Shipping Name: Toxic solid, inorganic, n.o.s. (contains Cobalt Sulfate Heptahydrate)
Transport Hazard Class: 6.1 (toxic substances)
Packing Group: III (moderate hazard)
Label Requirements: Toxic, Environmentally Hazardous
Environmental Hazards: Marine pollutant
Special Precautions: Avoid release to the environment during transit, check packing integrity before shipment
Transport Regulations: Comply with ADR, IMDG, IATA, and DOT requirements
Regulatory Information
TSCA Inventory: Listed
ECHA REACH: Registered substance, subject to certain restrictions in the EU
OSHA HazCom: Classified hazardous, included on the Right-to-Know lists in several states
SARA Title III: Subject to emergency planning and community right-to-know reporting, Section 313 listed for cobalt compounds
California Proposition 65: Listed chemical, known to cause cancer
Canada WHMIS: Classified as D2A (very toxic), D2B (toxic)
Other Regulations: Check local, regional, and national regulations for handling, exposure, and disposal, including workplace and environmental monitoring requirements
