Product Name: Ethyl Polysilicates-40
Chemical Family: Silicates
Synonyms: Tetraethyl Orthosilicate, TEOS-40
CAS Number: 11099-06-2
Recommended Uses: Binder in paints, adhesives, hardeners, crosslinking agent
Supplier: Listed chemical manufacturers or distributors
Emergency Contact: National Poison Center or local hazardous materials response
GHS Classification: Flammable liquid (Category 3), Eye irritation (Category 2A), Skin irritation (Category 2)
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor; causes serious eye irritation; may cause respiratory irritation; may cause skin irritation
Pictograms: Flame, exclamation mark
Precautionary Statements: Keep away from open flames, sparks, sources of ignition
Routes of Exposure: Inhalation, Skin, Eyes, Ingestion
Symptoms: Eye redness, skin irritation, drowsiness if inhaled, headache
Main Ingredient: Ethyl Polysilicate (approx. 40%)
CAS Number: 11099-06-2
Content: 40%
Other Ingredients: Ethanol (up to 30%), water, silicon dioxide polymers
Impurities: Ethyl alcohol by-product, trace hydrolyzed forms
Stabilizers: None listed
Inhalation: Move person to fresh air. Keep comfortable for breathing. Seek medical help for difficulty
Skin Contact: Remove contaminated clothing, rinse skin with water for 15 minutes
Eye Contact: Flush immediately with water for at least 15 minutes, lift eyelids occasionally
Ingestion: Do not induce vomiting. Rinse mouth. Seek medical attention
Symptoms to Watch: Headache, dizziness, skin redness, watering eyes, nausea
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical, CO2, water fog (not straight water jet)
Hazardous Combustion Products: Silicon oxides, carbon oxides, ethanol, irritating fumes
Protective Equipment: Self-contained breathing apparatus, full protective gear
Specific Hazards: Vapors heavier than air, flashback possible, containers may rupture from pressure
Special Procedures: Remove containers from fire zone if safe. Cool with water spray
Personal Precautions: Evacuate area, wear protective gloves, goggles, respirator
Environmental Precautions: Prevent product from entering drains, sewers, surface water
Cleanup Methods: Absorb with sand or inert material, collect into chemical waste containers
Ventilation: Increase air movement in spill area
Disposal: Dispose of with hazardous chemical waste
Safe Handling: Use spark-proof tools, wear personal protection, avoid breathing vapors
Precautions: Keep containers tightly sealed, only open in well-ventilated place
Hygiene Measures: Wash hands after handling, no eating or smoking in work area
Safe Storage: Store in cool, dry, well-ventilated area, away from heat, ignition sources, and acids
Incompatible Materials: Strong acids, moisture, oxidizers
Storage Life: Follow manufacturer's instructions, usually 6-12 months unopened
Occupational Exposure Limits: Ethanol (1000 ppm ACGIH)
Engineering Controls: Local exhaust ventilation, use closed systems
Personal Protective Equipment: Chemical-resistant gloves (nitrile or neoprene), splash goggles, lab coat or apron, respirator in high vapor settings
Workplace Hygiene: Provide emergency eye wash stations, emergency showers
Appearance: Clear to pale yellow liquid
Odor: Characteristic, alcoholic
pH: Not applicable
Boiling Point/Range: 120–170°C
Melting Point/Freezing Point: -77°C
Flash Point: 35–45°C (closed cup)
Evaporation Rate: Moderate (relative to ethers and ketones)
Flammability: Flammable liquid
Vapor Pressure: 8–15 mmHg at 20°C
Solubility: Partially soluble in water, miscible with most organic solvents
Density: 1.01–1.05 g/cm³
Auto-ignition Temperature: 230°C
Partition Coefficient (log Pow): Not determined for mixture
Chemical Stability: Stable in original sealed containers under recommended storage
Conditions to Avoid: Moisture, heat, open flame, static discharge
Incompatible Materials: Water, acids, oxidizing agents
Hazardous Decomposition: Silicon dioxide, carbon oxides, ethanol, toxic fumes
Polymerization: No hazardous polymerization expected
Acute Toxicity: Oral: LD50 rat 2500–3500 mg/kg (estimated, similar materials)
Inhalation: Vapors may cause headache, drowsiness, irritation to respiratory tract
Skin Contact: May cause moderate irritation or dryness
Eye Contact: Causes conjunctival redness and irritation
Chronic Effects: Prolonged exposure to high concentrations may harm liver, kidneys
Carcinogenicity: Not classified under IARC, OSHA, or NTP
Other Effects: Ingestion can depress the central nervous system
Aquatic Toxicity: Low to moderate (LC50 fish >100 mg/L)
Persistence and Degradability: Hydrolyzes in presence of water to form ethanol and silicic acid
Bioaccumulation: Low potential
Mobility in Soil: Mobile until hydrolysis, then immobilized as silica
Other Information: Ethanol formed during hydrolysis can affect aquatic life
Waste Disposal: Dispose as hazardous chemical waste
Contaminated Packaging: Triple rinse and offer for recycling or disposal, according to local regulations
Recommended Method: Incineration in licensed facility
Do Not: Release to environment, pour down drain, landfill unless permitted
UN Number: UN1292
Proper Shipping Name: Tetraethyl Silicate solution
Hazard Class: 3 (Flammable liquid)
Packing Group: III
Label: Flammable liquid (red)
Special Precautions: Keep away from foodstuffs, incompatible materials
Environmental Hazards: Not listed as marine pollutant
US TSCA: Listed
EU REACH: Registered
SARA 311/312 Hazards: Fire hazard, immediate/acute health hazard
OSHA Hazard: Flammable, irritant
Other Regulations: Check country-specific requirements, workplace limits for ethanol
Labeling Requirements: GHS compliant label, hazard and precautionary statements
