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Product Name: Vinyltriethoxysilane
Chemical Formula: C8H18O3Si
CAS Number: 78-08-0
Manufacturer: Industrial chemical suppliers
Recommended Use: Coupling agent, adhesion promoter in plastics, rubbers, and resins
Emergency Phone Number: Local or company emergency hotline
Classification: Flammable liquid, skin and eye irritant, acute toxicity – oral and inhalation
Signal Word: Danger
Hazard Statements: Causes skin and eye irritation, harmful if inhaled, may cause respiratory irritation, flammable liquid and vapor
Pictograms: Flame, exclamation mark
Precautionary Statements: Keep away from ignition sources, avoid breathing vapor, wash exposed skin thoroughly after handling, wear protective equipment
Chemical Component: Vinyltriethoxysilane
Concentration: ≥98%
Other Ingredients: Technical grade may include trace hydrolysis byproducts
Impurities: Ethanol generation possible upon hydrolysis
Inhalation: Move to fresh air, keep comfortable for breathing, seek medical attention for symptoms like coughing or difficulty breathing
Skin Contact: Remove contaminated clothing, rinse skin with water and soap, obtain medical care for persistent irritation
Eye Contact: Rinse eyes with plenty of water for several minutes, remove contact lenses if present, seek prompt medical advice
Ingestion: Rinse mouth with water, do not induce vomiting, consult a medical professional
Suitable Extinguishing Media: Carbon dioxide, alcohol-resistant foam, dry chemical powder
Unsuitable Media: Direct water jets can spread burning liquid
Hazards During Fire: Flammable vapors form explosive mixtures with air, thermal decomposition produces hazardous gases including carbon oxides, silicon oxides
Protective Equipment: Self-contained breathing apparatus, full protective clothing
Advice for Firefighters: Cool exposed containers with water spray, keep unauthorized personnel away
Personal Precautions: Remove ignition sources, ventilate area, use personal protective equipment including gloves and goggles
Environmental Precautions: Prevent entry into drains or water sources, contain spills using non-combustible absorbent materials
Cleanup Methods: Collect liquid with an inert absorbent, place in chemical waste container, ventilate area, wash contaminated surfaces with water and detergent
Handling: Use in well-ventilated areas, avoid breathing vapors, keep away from open flames, do not get into eyes or on skin
Storage: Store tightly closed in a cool, dry, well-ventilated place, segregate from strong acids, oxidizers, moisture
Incompatibilities: Moisture, acids, strong bases, and oxidizing agents
Exposure Limits: No established occupational exposure limits for pure component, monitor for ethanol if hydrolyzed
Engineering Controls: Local exhaust ventilation, safety shower and eyewash station
Personal Protective Equipment: Chemical-resistant gloves, safety goggles, flameproof lab coats, appropriate respiratory protection for vapor or mist
Hygiene Measures: Avoid eating, drinking or smoking during use, wash hands after handling
Appearance: Clear, colorless liquid
Odor: Characteristic, slightly ether-like
Boiling Point: 161–165°C
Melting Point: -76°C
Flash Point: 36°C (closed cup)
Explosive Limits: Lower 1.2%, Upper 10.6% (in air)
Vapor Pressure: 3.4 mmHg at 25°C
Density: 0.90 g/cm³ at 20°C
Solubility: Reacts slowly with water, soluble in most organic solvents
Vapor Density: Heavier than air, may travel along ground
Auto-Ignition Temperature: 225°C
Chemical Stability: Stable in sealed containers under recommended storage conditions
Reactivity: Reacts with water, acids, and bases forming ethanol and silanols
Hazardous Reactions: Ethanol generation, flammable vapor-air mixtures possible
Hazardous Decomposition Products: Silicon oxides, carbon oxides, lower aliphatic alcohols
Conditions to Avoid: Moisture, heat, ignition sources
Acute Toxicity: Harmful by inhalation, ingestion or skin absorption; oral LD50 (rat) 7,800 mg/kg
Skin Corrosion/Irritation: Causes moderate to severe skin irritation after prolonged exposure
Eye Damage/Irritation: Causes serious eye irritation
Respiratory Sensitization: May cause transient respiratory irritation
Chronic Effects: Prolonged exposure can dry or crack skin
Potential Health Risks: No confirmed carcinogenicity; ethanol byproduct has classification for chronic risks
Symptoms: Redness, stinging, coughing, difficulty breathing, headache, dizziness on high exposures
Aquatic Toxicity: Ethanol byproduct considered toxic to aquatic organisms in high concentrations, direct spillage should be avoided
Persistence and Degradability: Vinyltriethoxysilane hydrolyzes in water, forming silica, ethanol, and silanols, which degrade further
Bioaccumulation: No significant potential for bioaccumulation
Mobility in Soil: Mobile in soil, hydrolyzes rapidly, ethanol migrates to water tables
Other Adverse Effects: Discharge into the environment may cause local harm to wildlife and aquatic systems
Waste Disposal Methods: Dispose through licensed chemical waste contractor, do not release to drains, prefer incineration under controlled conditions
Contaminated Packaging: Rinse thoroughly, send for approved disposal or recycling, avoid landfill use
Other Information: Always comply with local and national regulations for hazardous waste
UN Number: 1993
Proper Shipping Name: Flammable Liquid, n.o.s. (Vinyltriethoxysilane)
Transport Hazard Class: 3 (Flammable Liquid)
Packing Group: III
Environmental Hazards: Not marine pollutant
Special Precautions: Keep away from heat and open flame, secure upright in transit, ensure ventilation
OSHA Hazard Communication: Classifies as hazardous under federal standard
SARA 313: Not listed
TSCA Inventory: Listed
REACH: Pre-registered/substance registration required in the EU
Other Regulations: Subject to workplace exposure controls, local fire codes, spill reporting requirements
