Material Safety Data Sheet: Pressure Swing Adsorption Silica Gel

Identification

Product Name: Pressure Swing Adsorption Silica Gel
Synonyms: Synthetic Amorphous Silicon Dioxide, Silica Gel
Recommended Uses: Desiccant, Drying Agent in Gas Purification
Supplier Details: Manufacturer's full address, technical contact phone number, emergency phone number
CAS Number: 7631-86-9
UN Number: Not regulated
Distributor Details: Company name, city, technical assistance phone number, email for further queries
Recommended Restrictions: Not for use in food or pharmaceuticals

Hazard Identification

GHS Classification: Not classified as dangerous under GHS criteria
Signal Word: None required
Hazard Statements: Dust may cause eye and respiratory irritation
Precautionary Statements: Avoid breathing dust. Avoid contact with eyes
Potential Health Effects: Prolonged inhalation may result in mild respiratory discomfort
Label Elements: No symbol mandated
Other Hazards: Dust accumulation can present mechanical irritation risk

Composition / Information on Ingredients

Chemical Name: Silicon Dioxide
Composition: SiO₂, over 98.5% purity
Molecular Formula: SiO₂
Impurities: Trace quantities of sodium oxide, iron oxide, aluminum oxide
Physical State: Granular or beaded solid
Color: White to slightly transparent

First Aid Measures

Inhalation: Move person to fresh air, support breathing if symptoms appear
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water
Eye Contact: Rinse eyes slowly and gently with clean water for several minutes, remove contact lenses if present
Ingestion: Rinse mouth with water, seek medical advice for large amounts
Notes for Medical Professionals: No delayed effects known, treat symptomatically

Fire-Fighting Measures

Suitable Extinguishing Media: Any media suitable for surrounding fire, silica gel does not burn
Hazardous Combustion Products: None known
Specific Hazards: Material remains stable under fire conditions, no risk of explosive vapors
Protective Equipment: Firefighters should use standard protective gear and self-contained breathing apparatus as for any dust

Accidental Release Measures

Personal Precautions: Prevent dust generation, ventilate area
Protective Equipment: Wear dust mask, safety goggles, and gloves
Environmental Precautions: Avoid letting spilled material enter watercourses or drains
Spill Cleanup: Collect dry material using mechanical means, place in appropriate container for disposal

Handling and Storage

Precautions for Safe Handling: Avoid creating airborne dust, minimize contact with eyes and skin, wash thoroughly after handling
Handling Information: Use only in well-ventilated areas, keep away from sources of ignition and open flame simply as a general safety habit
Storage Conditions: Store in cool, dry, well-ventilated area, keep container tightly closed
Incompatible Materials: Avoid strong acids, hydrofluoric acid, concentrated alkalis
Packing Materials: Use lined drums, bags or bulk containers that prevent leaking or moisture entry

Exposure Controls and Personal Protection

Exposure Limits: OSHA PEL for Particulates Not Otherwise Regulated: 15 mg/m³ (total dust), 5 mg/m³ (respirable fraction); ACGIH TLV: 10 mg/m³ (inhalable particles)
Engineering Controls: Use local exhaust ventilation to control dust at source
Personal Protective Equipment: Dust mask or respirator (NIOSH-approved), safety glasses, protective gloves, long-sleeved clothing
Hygiene Measures: Do not eat, drink, or smoke in work area, wash hands after use

Physical and Chemical Properties

Appearance: White to colorless granules or beads
Odor: Odorless
Odor Threshold: Not applicable
pH: Around 4.0–8.0 (in aqueous slurry)
Melting Point: Greater than 1600°C
Boiling Point: Not applicable (decomposes before boiling)
Flash Point: Not flammable
Vapor Pressure: Not applicable
Density: 2.1–2.2 g/cm³
Solubility: Insoluble in water and organic solvents
Auto-ignition Temperature: Not applicable
Explosive Properties: None
Oxidizing Properties: None

Stability and Reactivity

Chemical Stability: Stable under normal storage and handling conditions
Conditions to Avoid: Contact with hydrofluoric acid, exposure to damp conditions for extended periods can reduce adsorptive capacity
Materials to Avoid: Hydrofluoric acid, concentrated alkali solutions, strong oxidizers
Hazardous Decomposition Products: Inert, does not release hazardous fumes under normal use
Hazardous Polymerization: Will not occur

Toxicological Information

Acute Toxicity: Inhalation or ingestion of large amounts not likely, may cause mild irritation
Skin Irritation: Non-irritating for most people on short contact
Eye Irritation: Dust can irritate eyes mechanically
Respiratory Sensitization: Not sensitizing
Repeated Exposure: Chronic exposure to dust can aggravate pre-existing respiratory conditions
Carcinogenicity: Not classified as carcinogenic by IARC, NTP, OSHA
Mutagenicity: Not reported
Reproductive Toxicity: No known effects reported
Other Data: Crystalline silica content must be less than 0.1%, reducing silicosis risk to negligible

Ecological Information

Ecotoxicity: Low toxicity, does not bioaccumulate
Persistence and Degradability: Chemically stable, non-biodegradable
Mobility in Soil: Not mobile, remains in place as a solid mineral
Aquatic Toxicity: Large releases may cause turbidity but not toxic in aquatic systems
Bioaccumulation: No evidence of bioaccumulation
Other Adverse Effects: Material returns to sand-like silica over time without harming ecosystems

Disposal Considerations

Waste Disposal Methods: Dispose of in accordance with local, regional, and national regulations
Unused Product: Landfill or use for appropriate non-critical industrial applications
Contaminated Packaging: Rinse and recycle or landfill if permitted
Special Precautions: Avoid release to waterways, follow best practices for industrial waste management
Regulatory Waste Codes: Not classed as hazardous waste in most jurisdictions

Transport Information

UN Number: Not regulated
Proper Shipping Name: Not dangerous goods
Transport Hazard Class: None
Packing Group: None
Environmental Hazards: Not a marine pollutant
Special Precautions for Users: Prevent bag damage to avoid dusting during handling
Transport Label: No labeling required by international regulations

Regulatory Information

TSCA: Listed
REACH Registration: Exempted or registered as Silicon Dioxide
OSHA: Not regulated as hazardous
WHMIS Classification: Not a controlled product
SARA Title III Sections 311/312: No hazard categories identified
California Prop 65: No significant risk from amorphous silica
Other Regulatory Status: Conforms to EU and US requirements for non-hazardous solid mineral products