Product Name: Type Z Silica Gel
Chemical Family: Amorphous Silica
Synonyms: Precipitated Silica, Silicic Acid, Silicon Dioxide, Desiccant Beads
CAS Number: 112926-00-8
Recommended Use: Moisture absorption, drying agent, preservation of goods
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Classification: Eye Irritant, Non-flammable solid dust hazard
Signal Word: Warning
Hazard Statements: Causes eye irritation, may cause mild respiratory tract irritation if inhaled as dust
Pictograms: Exclamation mark
Precautionary Statements: Avoid breathing dust, wear protective eye and respiratory equipment, wash hands after handling, use only outdoors or in well-ventilated area
Potential Health Effects: Short exposure may irritate eyes, skin, lungs; repeated inhalation might aggravate pre-existing lung conditions
NFPA Ratings: Health: 1, Flammability: 0, Reactivity: 0, Special: -
GHS Classification: Eye Irritant (Category 2B), Specific Target Organ Toxicity – Single Exposure (Category 3, respiratory tract irritation)
Chemical Name: Silicon Dioxide
CAS Number: 112926-00-8
Concentration: >99% by weight
Other Components: Less than 1% water, trace metal oxides as impurities (alumina, iron oxide, calcium, magnesium)
Molecular Formula: SiO2
Molecular Weight: 60.08 g/mol
Inhalation: Move person to fresh air, seek medical attention for breathing difficulty, rinse mouth if dust inhaled
Eye Contact: Flush with running water for 15 minutes, lift eyelids occasionally, seek medical care if irritation persists
Skin Contact: Remove contaminated clothing, wash skin thoroughly with soap and water, seek attention if irritation develops
Ingestion: Rinse mouth, drink a glass of water if person is conscious, do not induce vomiting, consult physician if symptoms arise
Note to Physicians: No specific antidote, treat symptomatically
Flash Point: Not applicable; material is non-flammable
Suitable Extinguishing Media: Use media suitable for surrounding fire (water spray, foam, dry chemical, carbon dioxide)
Hazardous Combustion Products: None under normal combustion; if exposed to extreme temperatures, may release small quantities of silicon oxides
Special Protective Actions: Wear self-contained breathing apparatus and full protective gear; avoid inhaling gases from surrounding fires
Fire and Explosion Hazards: Does not burn or support combustion, dust can pose a mild hazard if dispersed in cloud
Personal Protection: Wear safety glasses, gloves, dust respirator to minimize exposure to dust
Environmental Precautions: Prevent large spills from entering drains, waterways; sweep up to avoid slip hazard
Containment: Sweep or vacuum up material without creating dust, avoid dry sweeping if possible; use damp disposal method
Cleanup Methods: Package waste in sealed, labeled containers for proper disposal; ventilate area after cleanup
Disposal: Dispose of in accordance with local, state, federal regulations
Handling: Avoid creating dust, do not breathe dust, use with local exhaust or adequate ventilation, handle with gloves and eye protection; practice good hygiene
Storage: Keep containers sealed and dry, store away from water, acids, hydrofluoric acid, strong bases; keep away from food or feed products
Material Incompatibility: Reacts with hydrofluoric acid to form silicon tetrafluoride gas
Other Recommendations: Inspect containers regularly for leaks, do not reuse containers for food storage
Occupational Exposure Limits: OSHA PEL: 6 mg/m3 (total dust), 3 mg/m3 (respirable fraction); ACGIH TLV: 10 mg/m3 (inhalable), 3 mg/m3 (respirable)
Engineering Controls: Use local exhaust ventilation, closed processes if possible, keep airborne concentrations below limits
Personal Protective Equipment: Safety glasses or goggles, gloves made from rubber or nitrile, NIOSH-approved dust respirator for large-scale use or if dust is present
Other Protective Measures: Wash hands and exposed skin after handling, change contaminated clothing, do not eat, drink or smoke during use
Appearance: White to slightly blue solid beads or granular
Odor: Odorless
Odor Threshold: Not applicable
pH: 4 - 8 (in water slurry)
Melting Point: Not measurable (decomposes at ~1600°C)
Boiling Point: Not applicable
Vapor Pressure: Not applicable
Solubility in Water: Insoluble
Bulk Density: 500 – 800 kg/m3
Percent Volatile: 0%
Evaporation Rate: Not applicable
Vapor Density: Not applicable
Partition Coefficient (n-octanol/water): Not available
Autoignition Temperature: Not applicable
Decomposition Temperature: >1600°C
Viscosity: Not applicable
Chemical Stability: Stable at ambient temperature and standard pressure
Hazardous Reactions: Reacts with hydrofluoric acid, produces toxic silicon tetrafluoride gas
Conditions to Avoid: Excessive dust generation, exposure to strong acids (especially hydrofluoric acid)
Incompatible Materials: Hydrofluoric acid, strong oxidizers, strong bases
Hazardous Decomposition Products: None under normal storage and handling conditions
Acute Toxicity: Non-toxic by oral, dermal, or inhalation exposure in standard doses, LD50 orally (rat): >5000 mg/kg
Chronic Effects: Prolonged exposure to respirable dust may impact lung function, rare cases of fibrosis in chronic exposure to crystalline silica (not applicable to amorphous silica)
Eye Effects: May cause irritation, redness, tearing
Skin Effects: Possible irritation from prolonged contact
Inhalation: Dust can irritate respiratory tract, coughing, shortness of breath with heavy exposure
Sensitization: Not a known sensitizer
Carcinogenicity: Amorphous silica not classified as carcinogenic by IARC, NTP, ACGIH, or OSHA
Reproductive Toxicity: No evidence of adverse effects in animal studies
Mutagenicity: Not identified as mutagenic or genotoxic
Ecotoxicity: No known toxicity to aquatic or terrestrial life; material is inert in environment
Persistence and Degradability: Remains as stable solid, does not degrade in soil or water
Bioaccumulation Potential: Not expected to bioconcentrate; molecular structure prevents absorption into organisms
Mobility in Soil: Low mobility, material remains in place if spilled on ground
Other Effects: Avoid large releases to watercourses to prevent sedimentation or physical disturbance
Waste Disposal: Dispose of in accordance with local, regional, and national laws; consider solid waste landfill route if not contaminated with hazardous materials
Packaging: Ensure packaging is tightly sealed and labeled, do not reuse containers for food or potable water
Special Precautions: Avoid releasing dust during disposal, do not flush into drains or watercourses
Reuse Opportunities: Dried gel may be recyclable for industrial uses or reactivation
RCRA Status: Not classified as a hazardous waste under RCRA regulations
UN Number: Not regulated as a hazardous material
Proper Shipping Name: Silica Gel, Non-Hazardous
Transport Hazard Class: None
Packing Group: None
Environmental Hazards: Not a marine pollutant, not environmentally hazardous during transport
Special Precautions: Avoid heavy vibration and direct contact with water during shipment; check containers for integrity
DOT, IATA, IMDG: Not classified as dangerous goods under any transport laws
OSHA Hazard Communication: Regulated as "nuisance dust" or "particulate not otherwise regulated"
TSCA Inventory: Listed on US Toxic Substances Control Act (TSCA) inventory
WHMIS Classification: Not controlled
SARA Title III Sections 302/304: Not listed as Extremely Hazardous Substance (EHS)
SARA Title III Section 313: Not listed
California Prop 65: Not listed as a carcinogen or reproductive toxin
REACH Compliance: Meets EU registration requirements as substance not classified as hazardous
Other Regulations: Ensure compliance with state and municipal requirements for storage, disposal, and emissions of dust
