Product Name: Type C Silica Gel
Other Names: Synthetic Amorphous Silica, Silicic Acid, Silicon Dioxide
Recommended Use: Desiccant, drying agent, catalyst carrier, chromatography stationary phase
Supplier Identification: Manufacturer/Supplier name and address, emergency phone number, and date of preparation
CAS Number: 7631-86-9
Hazard Classification: Non-combustible, non-toxic under normal conditions; dust may cause irritation
Physical Hazards: Can generate dust which irritates eyes, skin, respiratory tract
Signal Word: Warning
Hazard Statements: Causes mild skin and eye irritation, inhalation may cause inflammation of respiratory passages
Precautionary Statements: Use only with adequate ventilation; avoid breathing dust; wash hands after handling
Label Elements: Exclamation mark symbol for irritation
GHS Classification: Not classified as hazardous per GHS; exhibits nuisance dust characteristics
Chemical Name: Silica, Amorphous
Synonyms: Silicon dioxide, Precipitated Silica
Concentration: 99-100% SiO2
Impurities: Trace amounts of sodium oxide, water of hydration
Molecular Formula: SiO2
Molecular Weight: 60.08 g/mol
Inhalation: Move person to fresh air, seek medical attention if cough or discomfort persists
Skin Contact: Wash skin thoroughly with soap and water, remove contaminated clothing
Eye Contact: Rinse with running water for several minutes, seek medical care if irritation continues
Ingestion: Rinse mouth, drink water, get medical advice if symptoms appear
Note to Physician: Treat symptomatically based on individual reactions
Flammability: Not flammable
Suitable Extinguishing Media: Dry chemical, foam, carbon dioxide, water spray—choose agent according to environment
Specific Hazards: Does not support combustion, no hazardous fumes expected from product
Protective Equipment for Firefighters: Standard protective clothing, use self-contained breathing apparatus in case of dust or surrounding fire
Firefighting Instructions: Cool containers exposed to fire, avoid inhaling dust particles
Personal Precautions: Avoid dust, ensure proper ventilation, wear suitable respiratory and eye protection
Environmental Precautions: Prevent dust from entering drains, sewers, waterways
Methods for Cleanup: Sweep or vacuum up to minimize dust, place in suitable containers for disposal, use damp cloth or mop for final clean
Spill Response: Avoid generating airborne dust, bag waste for approved disposal
Handling: Avoid creating or inhaling dust, do not eat, drink, or smoke during use, wear personal protective equipment
Hygiene Measures: Wash hands and exposed skin before eating, leave work clothing at workplace
Storage: Store in airtight, dry containers away from water or humidity, keep away from incompatible substances such as hydrofluoric acid
Storage Conditions: Keep container tightly closed in well-ventilated place; prevent from accidental breakage to minimize dust release
Incompatibility: Do not store near strong acids, alkalis, oxidizers, or hydrofluoric acid
Exposure Limits: OSHA PEL for nuisance dust 10 mg/m3 (total), 3 mg/m3 (respirable fraction); ACGIH TLV 10 mg/m3 (inhalable)
Engineering Controls: Local exhaust ventilation, enclosure or cover points of dust generation, maintain good general ventilation
Personal Protective Equipment: Safety goggles, dust-proof gloves, NIOSH-certified dust respirator (P95 or better), protective work clothing
Hygiene Practices: Avoid contact with skin, eyes, and clothing; do not eat, drink or smoke where material is handled, wash thoroughly after use
Form: Granular or bead, solid
Color: White to off-white
Odor: Odorless
pH (5% aqueous suspension): 3.5 - 6.0
Boiling Point: Not applicable (decomposes)
Melting Point: 1600°C
Solubility: Insoluble in water and organic solvents
Relative Density: 2.1 - 2.2 g/cm3
Bulk Density: 500 - 750 kg/m3 depending on particle size
Evaporation Rate: Not applicable
Vapor Pressure: Not applicable
Decomposition Temperature: Not relevant for standard use
Other Information: High internal porosity and surface area
Chemical Stability: Stable under normal temperatures and pressures
Conditions to Avoid: Moisture, humidity, contact with hydrofluoric acid
Materials to Avoid: Strong acids (especially hydrofluoric acid), strong bases, oxidizers
Hazardous Decomposition Products: None observed under normal storage and use
Reactivity: Minimal under standard conditions; reacts only with hydrofluoric acid to form silicon tetrafluoride gas
Acute Toxicity: Not classified as acutely toxic; ingestion is unlikely to result in serious harm
Chronic Effects: Prolonged inhalation of high amounts of dust may result in respiratory irritation
Skin/Eye Contact: Direct contact may cause mechanical irritation
Carcinogenicity: Not listed as carcinogenic by IARC, NTP, OSHA
Mutagenicity: Not expected to be mutagenic
Reproductive Toxicity: No evidence of adverse reproductive effects
Sensitization: Not known to cause allergic reactions or sensitization
Medical Conditions Aggravated: Individuals with existing respiratory conditions may experience worsened symptoms from dust exposure
Ecotoxicity: Not toxic to aquatic or terrestrial organisms
Persistence and Degradability: Chemically stable, does not biodegrade
Bioaccumulative Potential: No potential for bioaccumulation as it is insoluble in water
Mobility in Soil: Remains in solid phase, unlikely to migrate
Other Adverse Effects: No known significant environmental effects; used material should be disposed to avoid creating nuisance dust
Waste Disposal Methods: Dispose of as non-hazardous mineral waste according to local, regional, and national guidelines
Packaging Disposal: Clean containers may be recycled; contaminated material should be landfilled or incinerated according to regulations
Special Considerations: Prevent dust generation during disposal; do not allow material to enter stormwater or sewage systems
Reuse Potential: Consider reuse or recycling for compatible industrial applications
Regulatory Status: Product does not qualify as hazardous waste under US RCRA, EU Directives, or other major standards
UN Number: Not regulated for any form of transport
Proper Shipping Name: Not restricted
Transport Hazard Class: None
Packing Group: Not assigned
Marine Pollutant: No
Special Precautions: Containers should be secure and closed to avoid spillage and dust during transit
Labeling Requirements: None for standard silica gel
Regulatory Transport Status: Product is not considered dangerous for air, sea, rail, or road transport
Safety, Health and Environmental Regulations: Product listed as non-hazardous under OSHA Hazard Communication Standard, Canada WHMIS, EU CLP, Japan Industrial Safety Law
Chemical Inventory Status: Listed on TSCA, EINECS/ELINCS, ENCS, AICS, DSL, IECSC
Labeling Requirements: No specific pictogram required by GHS; basic hazard warning for mechanical irritation
Local/National Restrictions: Observe workplace exposure limits for silica dust
Other Regulatory Notes: Product supports compliance with basic workplace safety, maintains low hazard rating, follow country-specific guidance where provided
