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Product Name: Calcium Carbonate
Chemical Formula: CaCO₃
CAS Number: 471-34-1
Common Names: Limestone, Marble, Chalk, Calcite
Recommended Use: Filler in construction, manufacturing, agriculture, pharmaceuticals, food additive
Supplier Details: Company contact information and emergency phone number must appear here to meet safety regulations and facilitate rapid response.
GHS Classification: Not classified as hazardous under GHS for most uses
Potential Health Effects: Dust can irritate eyes, skin, and respiratory tract; long-term inhalation of dust can lead to lung issues
Environmental Hazards: No significant hazards expected under normal conditions, but dust runoff can affect pH in aquatic environments
Label Elements: Pictograms generally not required, but dust masks, gloves, and eye protection logos often used on bulk containers for reference
Signal Word: None defined for CaCO₃
Hazard Statements: May cause mechanical irritation to eyes and respiratory tract
Precautionary Statements: Avoid breathing dust; wash hands after handling; wear proper personal protective equipment
Chemical Identity: Calcium Carbonate
Purity: Typically over 97%, remaining content may include trace magnesium carbonate, silica, clay
Impurities: Depending on the source, minor impurities might include silicates, iron oxides, or organic matter, which rarely affect safety but can play a role in industrial or pharmaceutical purity requirements
Eye Contact: Rinse with clean water for several minutes; medical attention advised if irritation persists
Skin Contact: Wash with soap and water; seek medical help for irritation or rash
Inhalation: Remove to fresh air; monitor for persistent coughing or difficulty breathing, seek medical advice as required
Ingestion: Rinse mouth; symptoms are unlikely unless large amounts are swallowed, but consult a physician if discomfort arises; issues like constipation could occur with excessive ingestion
Flammability: Non-flammable solid
Suitable Extinguishing Media: Use water spray, dry chemical, foam, or carbon dioxide for adjacent burning material
Special Hazards: Heating above 825°C releases carbon dioxide gas, which might displace oxygen in confined areas
Protective Equipment: Firefighters should wear self-contained breathing apparatus if large quantities are involved and dust is present
Personal Precautions: Wear dust mask, safety goggles, gloves to prevent irritation
Environmental Precautions: Prevent excessive runoff into water systems due to potential pH increase
Containment Methods: Use barriers to contain spill, avoid creating dust clouds
Cleanup Procedures: Sweep or vacuum up material, place in appropriate container for reuse or disposal, ventilate area if dust accumulates
Safe Handling Guidance: Work in well-ventilated areas to minimize airborne dust; avoid mechanical actions like grinding without dust controls
Storage Recommendations: Store in dry, cool, ventilated locations to avoid moisture absorption and lump formation; keep bins closed to limit exposure to air and water
Incompatible Materials: Store away from acids, which react and generate carbon dioxide gas and heat
Occupational Exposure Limits: OSHA PEL: 15 mg/m³ (total dust), 5 mg/m³ (respirable fraction); ACGIH TLV: 10 mg/m³ (inhalable particulate, not otherwise classified)
Engineering Controls: Local exhaust ventilation, dust collection systems for bulk handling
Personal Protective Equipment: Safety glasses for eye protection, gloves for direct skin contact, approved dust masks or respirators when airborne dust levels approach exposure limits; protective clothing if repeated contact expected
Appearance: White or off-white fine powder or crystalline solid
Odor: Odorless
Melting Point: Decomposes at 825°C (1,517°F)
Boiling Point: Not applicable (decomposes before boiling)
Solubility: Slightly soluble in water, more soluble in acidic solutions
pH: 8.0 – 10.0 (saturated solution)
Vapor Pressure: Not volatile
Density: 2.7 g/cm³
Other: Stable in dry air, may form lumps in humid environments due to moisture absorption
Chemical Stability: Stable under recommended storage and handling conditions
Conditions to Avoid: Contact with acids and high temperatures
Incompatible Products: Acids (produces carbon dioxide gas), ammonium salts with humidity can also lead to limited reactivity
Hazardous Decomposition: Carbon dioxide released upon strong heating or acid contact
Possibility of Hazardous Reactions: No dangerous reactions except for those with strong acids
Acute Toxicity: Low toxicity, oral LD50 (rat): > 5,000 mg/kg
Chronic Effects: Long-term inhalation of fine dust can contribute to respiratory irritation and possible development of pneumoconiosis
Sensitization: No evidence of allergic skin reactions
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, OSHA
Other Information: Food-grade and pharmaceutical-grade calcium carbonate considered safe for consumption at approved levels
Ecotoxicity: Not known to be acutely toxic to aquatic organisms, although excessive release can temporarily raise water pH and harm some species
Persistence and Degradability: Not biodegradable, but natural mineral breaks down slowly to calcium and carbonate ions in the environment
Bioaccumulation: Not expected to bioaccumulate, considered part of natural biogeochemical cycles
Mobility: May run off into waterways if handled in powder form without proper controls
Disposal Methods: Recycle or reuse whenever possible for industrial, construction, or agricultural applications; otherwise, dispose with non-hazardous solid waste
Waste Handling: Prevent dispersal of dust in air; consult local regulations regarding pH-altering substances in landfill or water discharge
Packaging Disposal: Clean, recycle, or dispose of packaging in accordance with material type and local guidelines
UN Number: Not classified as dangerous goods for transport
Transport Hazard Class: Not regulated
Packing Group: Not assigned
Special Precautions: Avoid moisture penetration during shipping, use dust-proof bags or bulk containers, and ensure signage for respiratory protection if container breach occurs on route
OSHA Regulations: Listed as a nuisance dust; not hazardous by OSHA Hazard Communication Standard
TSCA (US): Listed on the Inventory
REACH (EU): Registered; compliant for import, export, and production in the European Union
WHMIS (Canada): Non-controlled product
Other Regulatory Listings: Approved as food additive (E170), and considered safe in dietary supplements and pharmaceuticals when meeting applicable standards
