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West Ujimqin Banner, Xilingol League, Inner Mongolia, China
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Product Name: Diatomaceous Earth
Synonyms: Diatomite, Kieselguhr
Recommended Use: Filtration aid, mild abrasive, insecticide, absorbent, soil amendment
Manufacturer/Supplier: Contact actual producer for specific details
Emergency Phone Number: Check local poison control or emergency services
CAS Number: 61790-53-2 (natural form—may vary by product)
Molecular Formula: SiO2·nH2O
Relevant Identified Uses: Mainly industrial, agricultural, and consumer settings
GHS Classification: Specific Target Organ Toxicity (repeated exposure), Category 2
Signal Word: Warning
Hazard Statements: Long-term inhalation can cause damage to lungs; may cause respiratory irritation
Pictograms: Health hazard symbol
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Potential Health Effects: Inhalation may cause coughing, shortness of breath; skin and eye contact may cause mild irritation
Chronic Exposure: Prolonged inhalation increases risk of silicosis if crystalline silica is present
Chemical Name: Amorphous silica
Content: Approx. 80–90% silicon dioxide
Impurities: Clay, feldspar, quartz; crystalline silica levels (<1% to 10% depending on source)
Other Components: Trace minerals (aluminum, iron, calcium, magnesium)
Hazardous Components: Crystalline silica (quartz)—increases risk with high content or fine dust
Physical Appearance: Off-white to light gray or pinkish, fine powder
Inhalation: Remove person to fresh air, seek medical attention if symptoms persist
Skin Contact: Wash affected area with soap and water
Eye Contact: Rinse cautiously with water for several minutes; remove contact lenses if present and easy to do, continue rinsing
Ingestion: Rinse mouth; do not induce vomiting, seek medical advice
Most Important Symptoms: Coughing, mild irritation, sore throat, watery eyes
Suitable Extinguishing Media: Use any standard firefighting agent: water spray, foam, dry chemical, CO2
Unsuitable Extinguishing Media: None known
Specific Hazards: Product is not flammable, does not support combustion
Protective Equipment: Standard firefighting gear, self-contained breathing apparatus
Advice for Firefighters: Avoid inhaling dust, cool containers exposed to heat
Personal Precautions: Avoid creating dust, ventilate area, wear protective equipment
Spill Response: Sweep or vacuum material into suitable container, avoid dry sweeping if dust clouds possible
Environmental Precautions: Keep out of drains and waterways
Cleanup Methods: Moisten with water to avoid dust then collect for disposal; dispose of according to local regulations
Safe Handling: Minimize dust generation and accumulation, use in well-ventilated areas, avoid breathing dust
Storage Conditions: Store in cool, dry place, keep containers tightly closed
Incompatible Materials: Strong acids
Advice on General Occupational Hygiene: Wash hands and exposed skin before eating and after work, avoid contamination of work clothes
Special Requirements: Maintain bags or containers in secure, labeled storage, prevent bag breakage
Occupational Exposure Limits: OSHA PEL for respirable crystalline silica (quartz): 0.05 mg/m3 (8-hour TWA)
Engineering Controls: Use local exhaust ventilation, enclose work process where practical
Personal Protective Equipment: Respiratory protection (NIOSH-approved for dust), safety goggles, protective gloves, appropriate clean work clothing
Other Protection: Eye wash station, emergency shower recommended in work area
Physical State: Solid, dry powder
Color: Off-white, gray, pinkish hue
Odor: Odorless
pH: 6.0–8.0 (in water suspension)
Melting Point: Greater than 1,250°C (2,282°F)
Solubility: Insoluble in water
Specific Gravity: 1.9–2.3
Boiling Point: Not applicable
Vapor Pressure: Not applicable
Bulk Density: 120–480 kg/m3 (varies with product grade and moisture content)
Particle Size: Average size may range from 1–10 microns (respirable—see product specs)
Chemical Stability: Chemically stable under normal conditions
Reactivity: Unreactive with most substances
Hazardous Reactions: Reacts with hydrofluoric acid to form silicon tetrafluoride gas
Conditions to Avoid: Avoid dust formation, contact with strong acids
Hazardous Decomposition: No hazardous decomposition under standard storage and handling
Polymerization: Does not occur
Acute Toxicity: Low acute oral toxicity, ingestion results in mild discomfort at worst
Chronic Effects: Prolonged inhalation of respirable crystalline silica dust causes lung damage, including silicosis and increased lung cancer risk; amorphous form considered much less hazardous
Routes of Entry: Inhalation most significant
Symptoms: Dry cough, throat irritation, shortness of breath
Carcinogenicity: Crystalline silica classified as IARC Group 1 (carcinogenic to humans) when inhaled in large amounts over time
Sensitization: None reported
Mutagenicity: Not classified as mutagenic
Ecotoxicity: Not expected to be harmful to aquatic or terrestrial life at typical use concentrations
Persistence and Degradability: Remains in environment as insoluble mineral; does not degrade biologically
Bioaccumulation: Not expected
Mobility in Soil: Immobile as a solid, low solubility limits transport
Other Adverse Effects: Excessive spillage may cause temporary turbidity in waterways
Disposal Methods: Handle as non-hazardous mineral waste unless contaminated
Waste Classification: Check for local and national restrictions as some forms may qualify as hazardous (based on crystalline silica content or contamination)
Container Disposal: Ensure containers are empty, recycle or dispose of following local regulations
UN Number: Not regulated
Proper Shipping Name: Not regulated
Transport Hazard Class: Not applicable
Packing Group: Not applicable
Special Precautions: Transport in dry, well-sealed containers to minimize dust generation
OSHA: Regulated as dust with permissible exposure limits for crystalline silica
TSCA (US): Listed
REACH (EU): Registered substance for industrial uses
WHMIS (Canada): Controlled product—classification depends on crystalline silica content
California Proposition 65: Crystalline silica listed as known carcinogen
Other Regulation: Check country, state, and local guidelines on exposure, labeling, and environmental release
West Ujimqin Banner, Xilingol League, Inner Mongolia, China
