Product Name: WS Type Alumina Silica Gel
Chemical Family: Synthetic Amorphous Alumina Silicate
CAS Number: 63231-67-4 (Silica Gel), 1344-28-1 (Alumina)
Trade Names: WS Silica Gel, Activated Alumina Silica Blend
Recommended Use: Desiccant, Catalyst Carrier, Adsorbent
Manufacturer/Supplier: Typically listed on packaging, contact supplier for details
Contact Information: Refer to label or accompanying documentation
Emergency Phone: Available on MSDS issued directly from supplier
Synonyms: Silicic Acid, Aluminum Salt, Silica-Alumina Composite
GHS Status: Not classified as hazardous according to GHS
Main Hazards: Dust from material may irritate eyes, skin, and respiratory tract
Physical Hazards: Combustion not a concern, non-flammable
Chronic Exposure: High dust concentrations over long periods could potentially cause lung damage (silicosis or aluminosis not a normal hazard for amorphous forms)
Label Elements: None required for amorphous forms
Signal Word: None
Pictograms: None
Precautionary Statements: Use appropriate PPE when handling powders
Other Hazards: Not known to be carcinogenic, mutagenic, or toxic for reproduction
Chemical Name: Silica Gel, Amorphous / Activated Alumina
CAS Numbers: 63231-67-4 (Silica Gel), 1344-28-1 (Alumina)
Content: ≥60% Silica (SiO2), 20–30% Alumina (Al2O3)
Impurities: Trace sodium or potassium, Minor iron oxide
Hazardous Components: None at concentrations that require classification
Other Additives: None in standard product
Inhalation: Move affected person to fresh air. Seek medical attention if breathing difficulties continue. Avoid further inhalation.
Skin Contact: Wash exposed skin gently with soap and water. Remove contaminated clothing.
Eye Contact: Rinse eyes cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing.
Ingestion: Rinse mouth with water, do not induce vomiting. Get medical attention if symptoms persist.
Most Important Symptoms: Dust irritation of eyes, skin, and airways
Medical Attention: Symptoms rarely require special treatment beyond basic supportive care.
Flammability: Not flammable, not combustible
Suitable Extinguishing Media: Use agent appropriate for surrounding materials, such as water spray, foam, dry chemical, or CO2
Special Hazards: None expected; does not release hazardous fumes in fire
Advice for Firefighters: Standard procedures for chemical dusts; wear protective equipment as indicated for adjacent hazards
Thermal Decomposition: At high temperatures, product remains stable
Explosion Risks: None; dust may present slip hazard if accumulated
Personal Precautions: Prevent dust formation. Wear a dust mask and goggles if large quantities spill.
Environmental Precautions: Avoid discharge to drains. Prevent bulk from blowing into environment.
Clean Up Methods: Vacuum or sweep up material and put in appropriate container. Avoid dry brushing or compressed air.
Disposal: Dispose of in accordance with local, state, and federal regulations.
Spill Response: Wet down dust if large volumes are released in confined areas.
Emergency Procedures: If needed, evacuate area to avoid respiratory dust exposure.
Handling: Use care to minimize dust generation. Keep container tightly closed to maintain adsorption ability.
Hygiene: After handling, wash thoroughly with soap and water before eating, drinking, or smoking.
Protection: Use local ventilation where powder becomes airborne and during filling or packing.
Storage: Store in a dry and cool area, away from strong acids and alkalis. Avoid moisture exposure.
Packaging Materials: Paper, plastic, or metal drums, lined or sealed
Incompatibilities: Store away from hydrofluoric acid and alkali metals.
Special Sensitivity: Prolonged exposure to atmospheric moisture reduces product effectiveness.
Exposure Limits: Particulate Not Otherwise Regulated (PNOR): 10 mg/m3 (Total Dust, OSHA PEL), 3 mg/m3 (Respirable, ACGIH TLV)
Engineering Controls: Local exhaust ventilation is recommended where dust may form.
Respiratory Protection: Use NIOSH-approved dust mask if occupational exposure limits might be exceeded.
Hand Protection: Wear protective gloves, especially with sensitive skin.
Eye Protection: Use safety glasses or chemical goggles to avoid contact.
Other Protective Equipment: Use protective clothing if repeated contact with large amounts.
Environmental Exposure: Avoid bulk disposal in water sources.
Appearance: White to off-white granules, beads, or powder
Odor: Odorless
pH (Water Suspension): 3.5–8.0 depending on grade
Boiling Point: Not applicable (solid, decomposes before boiling)
Melting Point: >1000°C (1832°F)
Density: 0.6–0.8 g/cm³ (loose bulk, varies by grade)
Solubility: Insoluble in water and most solvents
Vapor Pressure: Not applicable
Partition Coefficient: Not applicable
Flash Point: Not applicable
Auto-ignition Temperature: Not applicable
Decomposition Temperature: Stable up to 900°C
Molecular Formula: SiO2-Al2O3 composite
Porosity: High surface area (250–800 m²/g typical)
Chemical Stability: Chemically stable under normal storage and usage conditions
Reactivity: May react with strong acids or alkali, particularly hydrofluoric acid
Conditions to Avoid: Exposure to moisture, high humidity, or acids/alkalis
Hazardous Decomposition Products: None known
Polymerization: Will not occur
Incompatible Materials: Hydrofluoric acid, hot and concentrated strong alkalis
Corrosivity: Not corrosive to metals or plastics commonly used in warehouses
Routes of Exposure: Inhalation, skin and eye contact, accidental ingestion
Acute Toxicity: Not acutely toxic
Chronic Toxicity: Crystalline forms are hazardous by inhalation, not typical in this material
Irritation: May cause mechanical irritation to eyes and respiratory tract
Sensitization: Not a known sensitizer
Carcinogenicity: Not listed by IARC, NTP, or OSHA
Mutagenicity: Not mutagenic in standard tests
Reproductive Toxicity: No evidence from studies
Target Organ Effects: No clear target organ effects for amorphous alumina-silica blend
Epidemiology: No epidemiological data implicating this blend in human disease
Ecotoxicity: Considered inert and non-toxic to aquatic and terrestrial life in normal forms
Persistence and Biodegradability: Inorganic material, not biodegradable but non-persistent as environmental hazard
Bioaccumulation: Not expected to bioaccumulate
Mobility in Soil: Not mobile, does not dissolve in groundwater
Aquatic Toxicity: No adverse ecological impact recognized at environmental concentrations
Other Adverse Effects: No ozone depletion or global warming activity
Degradation Products: Not relevant for this inorganic mix
Waste Management: Dispose as non-hazardous waste in compliance with regulations
Methods of Disposal: Landfill permitted. Avoid direct release into waterways.
Recycling: Some industries regenerate used gel/alumina by heating
Contaminated Packaging: Clean containers for reuse or recycling; soiled drums require professional cleaning
Special Instructions: Always follow local and federal laws
Regulatory Codes: US EPA: Not a listed hazardous waste (RCRA). EU: Considered non-hazardous under 2008/98/EC.
UN Number: Not regulated
Proper Shipping Name: Not classified as dangerous goods
Hazard Class: Not applicable
Packing Group: Not classified
Marine Pollutant: No
Special Transport Precautions: Keep dry during transport to retain adsorptive properties
Specific Transport Codes: Not assigned; standard bulk transportation sufficient
OSHA: Not regulated as hazardous
TSCA Status: Components listed on TSCA Inventory
REACH Registration: Exempt or pre-registered as mineral
WHMIS Classification (Canada): Not a controlled product
RoHS/ELV/WEEE: Compliant
California Proposition 65: Not listed
EU Classification: Not classified as hazardous per Regulation (EC) No 1272/2008
SARA Title III: Not listed as hazardous
Other: Keep up with local, regional, and national regulations for chemical materials
