Product Name: Hydrophilic Fumed Silica
Chemical Formula: SiO2
Synonyms: Synthetic Amorphous Silica, Silicon Dioxide, Pyrogenic Silica
Recommended Uses: Thickening agent, free-flow agent, anti-caking agent in paints, coatings, adhesives, cosmetics, food, pharmaceuticals, sealants, and inks
Manufacturer: Refer to label on packaging
Emergency Contact: National Poison Center or Chemtrec (24-hour hotline)
Classification: Not classified as hazardous under current OSHA regulations or EU directives
Potential Health Effects: Prolonged exposure to dust can irritate eyes, skin, and respiratory tract; nuisance dust at high concentrations
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Signal Word: Not required
Pictogram: Not required
Precautionary Statements: Prevent dust buildup, use appropriate personal protective equipment, avoid breathing dust
Chemical Name: Silicon Dioxide
CAS Number: 112945-52-5
EC Number: 231-545-4
Concentration: 100% hydrophilic fumed silica, with no additives or impurities of concern
Inhalation: Move affected person to fresh air, support breathing as needed, seek medical help if cough or irritation persists
Eye Contact: Rinse immediately with plenty of water, lift upper and lower lids, remove contact lenses if present and easy to do, continue irrigation for several minutes, get medical attention if irritation continues
Skin Contact: Wash thoroughly with soap and water, remove contaminated clothing and footwear, consult doctor if symptoms develop
Ingestion: Rinse mouth thoroughly, drink water, do not induce vomiting, seek medical advice in case of discomfort or large quantity exposure
Note to Physician: Treat symptomatically, no specific antidote known
Suitable Extinguishing Media: Water spray, foam, dry chemical, carbon dioxide
Unsuitable Media: No special restrictions as silica is inorganic and nonflammable
Special Hazards: Product is not combustible, but packaging and surrounding materials may burn
Protective Equipment: Firefighters should use self-contained breathing apparatus and protective clothing if exposed to large volumes of dust or smoke
Explosion Data: Explosion hazard may arise from airborne dust accumulation in confined spaces; maintain proper housekeeping to control dust levels
Personal Precautions: Use respiratory protection to avoid inhaling airborne dust, wear goggles and gloves
Environmental Precautions: Prevent further leakage or spillage if safe to do, avoid release into drains and surface water
Methods for Containment: Avoid creating dust clouds, sweep or vacuum material using equipment with HEPA filtration
Cleanup Procedures: Collect in appropriate containers for disposal, ventilate area, ensure surfaces are thoroughly cleaned afterwards using water or approved cleaning solutions
Handling: Minimize dust generation, handle in well-ventilated places, wear protective clothing and equipment, avoid contact with skin and eyes
Storage: Keep container tightly closed in a dry, cool, and well-ventilated location, store away from moisture and incompatible materials like hydrofluoric acid, label containers clearly
Incompatible Materials: Strong acids, especially hydrofluoric acid, strong bases, oxidizing agents
Safe Transfer: Use tools and equipment designed for powders, ground containers when handling large quantities to dissipate static electricity
Occupational Exposure Limits: OSHA PEL (Respirable Dust): 6 mg/m3, ACGIH TLV (Inhalable): 10 mg/m3 (nuisance dust)
Engineering Controls: Provide local exhaust ventilation or use enclosed handling systems to prevent dust buildup
Personal Protective Equipment: Safety glasses with side shields, gloves resistant to dust penetration, NIOSH-approved particulate respirator for dusty environments
Hygiene Measures: Wash hands before eating, drinking, smoking, and at shift end; avoid taking contaminated clothing home
Environmental Controls: Use appropriate filters or scrubbers on exhaust systems to limit emissions
Appearance: White, fluffy, odorless powder
Solubility: Insoluble in water
Melting Point: 1,600°C
Boiling Point: Not Applicable
Bulk Density: 30–70 kg/m3
pH (in water, 4%): 3.6–4.5
Vapor Pressure: Not Applicable
Flash Point: Not Applicable
Partition Coefficient: Not Applicable
Upper/Lower Flammability: Not flammable
Other Properties: High surface area (BET 200–400 m2/g), amorphous structure, non-combustible
Chemical Stability: Stable under normal temperatures and recommended handling
Hazardous Reactions: No known hazardous polymerizations
Conditions to Avoid: Avoid contact with hydrofluoric acid and sources of strong acids or alkalis
Decomposition Products: No hazardous decomposition products under normal conditions; may emit silicon oxides at extremely high temperatures
Reactivity: Reacts with hydrofluoric acid to form silicon tetrafluoride gas
Acute Toxicity: Not acutely toxic by oral, dermal, or inhalation exposure, based on animal studies
Inhalation Effects: Temporary mechanical irritation to respiratory tract from dust particles
Skin Contact: Repeated exposure may cause mild, transient mechanical irritation
Eye Contact: Dust can cause redness, pain, or mechanical abrasion
Chronic Effects: No evidence of carcinogenicity in humans or animals; not classified as a known carcinogen by IARC, NTP, or OSHA
Sensitization: No known sensitizing properties
Mutagenicity/Carcinogenicity/Reproductive Toxicity: No evidence from available studies
Ecotoxicity: No significant effects on aquatic organisms reported; does not bioaccumulate in living tissue
Persistence and Degradability: Not biodegradable, but exists as a naturally abundant mineral in the environment
Mobility in Soil: Not mobile; product binds to soil particles and sediments
Bioaccumulative Potential: Not expected to bioaccumulate
Other Effects: Large scale releases could cause mechanical interference with aquatic systems by increasing turbidity
Waste Disposal Methods: Dispose of in compliance with local, regional, and federal regulations for non-hazardous solid waste
Product Waste: Reuse or recover material whenever possible; solid waste may be disposed of in a licensed landfill
Contaminated Packaging: Clean and recycle or dispose of as non-hazardous waste according to local requirements
Special Precautions: Prevent dust dispersal during handling and disposal, avoid release to environment in uncontrolled quantities
UN Number: Not regulated as a dangerous good
Proper Shipping Name: Amorphous Silicon Dioxide
Transport Hazard Class: Not classified as hazardous for transport
Packing Group: Not assigned
Special Precautions: Protect containers from physical damage and keep dry during transport
US Regulations: Listed on TSCA Inventory, not subject to significant regulation as hazardous material
EU Regulations: Registered under REACH, not classified as a dangerous substance
Canada: Listed on DSL/NDSL, not considered hazardous
Other Regulations: No OEL exceeded under normal conditions, not on California Proposition 65 lists, labeling and packaging must follow criteria for non-hazardous dusts under workplace legislation
