Product Name: Vinyltriethoxysilane
Chemical Formula: C8H18O3Si
CAS Number: 78-08-0
Synonyms: Triethoxy(vinyl)silane
Manufacturer: Provided by supplier upon request
Uses: Functions in adhesives, sealants, surface treatments
Contact for Emergency: Refer to local supplier or regional poison control center
UN Number: 1993
GHS Classification: Flammable liquid, acute toxicity (oral), skin and eye irritant
Signal Word: Danger
Hazard Symbols: Flame, exclamation mark
Physical Hazards: Easily ignites, burns with invisible flame
Health Hazards: Burns skin and eyes, irritates respiratory tract
Environmental Hazards: Toxic to aquatic life with long lasting effects
Precautionary Statements: Keep away from ignition sources, avoid breathing vapors, use with adequate ventilation
Chemical Identity: Vinyltriethoxysilane
CAS Number: 78-08-0
Concentration: Typically up to 100%
Impurities: Ethanol (possible during hydrolysis), trace non-hazardous stabilizers
Inhalation: Move person to fresh air, administer oxygen if breathing is difficult, seek medical attention if respiratory symptoms persist
Skin Contact: Wash area with soap and large amounts of water, remove contaminated clothing, seek medical care if irritation persists
Eye Contact: Rinse eyes carefully with water for several minutes, remove contact lenses if present, continue rinsing, get medical attention
Ingestion: Rinse mouth, do not induce vomiting, never give anything by mouth to an unconscious person, seek immediate medical help
Suitable Extinguishing Media: Carbon dioxide, foam, dry chemical powder, water fog for large fires
Unusual Fire Hazards: Vapors can form explosive mixtures with air, invisible flames possible
Explosion Data: Vapors are heavier than air and may travel to an ignition source
Protective Equipment: Firefighters should wear self-contained breathing apparatus and full protective clothing
Specific Hazards: Decomposition forms silicon dioxide, carbon oxides and possibly trace, unknown compounds
Special Procedures: Cool containers with water, avoid runoff entering drains
Personal Precautions: Remove ignition sources, ventilate area, wear protective equipment including gloves, chemical goggles, and respirator
Environmental Precautions: Stop leaks if safely possible, keep out of sewers and waterways
Methods for Clean-up: Absorb with inert material (sand, earth), place in chemical waste container, dispose according to local regulations
Decontamination: Clean area with plenty of water and suitable detergent
Handling: Use in well-ventilated areas, wear protective gear, keep away from heat or open flames, ground and bond containers when transferring material
Storage: Store in tightly closed containers, keep cool and dry, store away from oxidizers, acids, moisture
Special Instructions: Protect from light and humidity, store in original containers
Exposure Limits: No established occupational exposure limits for vinyltriethoxysilane, but ethanol byproduct may have a TLV of 1000 ppm
Engineering Controls: Use local exhaust, maintain negative pressure in storage rooms
Personal Protection: Chemical-resistant gloves, splash goggles, flame-retardant clothing, NIOSH/MSHA-approved respirator if vapor concentration is high
Hygiene Measures: Wash thoroughly after handling, remove contaminated clothing before entering eating areas
Appearance: Clear, colorless to pale yellow liquid
Odor: Mild, ethanol-like
Odor Threshold: Not determined
Boiling Point/Range: Approximately 160-162°C
Melting Point/Range: Not available
Flash Point: 41°C (closed cup)
Evaporation Rate: Not established
Flammability: Flammable
Explosion Limits: Lower: 1.2%, Upper: 8.3% (approximate values)
Vapor Pressure: 3 mmHg at 25°C
Vapor Density: Heavier than air
Solubility: Reacts with water, generates ethanol
Density: 0.90 g/cm³
Partition Coefficient: Not available
Autoignition Temperature: 265°C
Decomposition Temperature: Not determined
Viscosity: Low, like a light oil
Chemical Stability: Chemically stable under normal conditions, especially if stored dry and cool
Incompatibilities: Reacts with strong acids, oxidizing agents, water, moisture, and bases
Hazardous Decomposition Products: May release silicon dioxide, ethanol, carbon monoxide
Polymerization: Does not occur under recommended storage and handling practices
Other Risks: Products of hydrolysis are flammable and toxic
Acute Toxicity: LD50 oral (rat): >2000 mg/kg
Skin Corrosion/Irritation: Causes moderate to severe irritation
Eye Damage/Irritation: Causes eye irritation
Respiratory Effects: Causes coughing, headache, dizziness in high concentrations
Chronic Effects: Prolonged exposure may cause liver and kidney damage
Sensitization: Reports of allergic skin reaction are rare
Carcinogenicity: Not listed by IARC, NTP, OSHA
Mutagenicity and Reproductive Toxicity: No data to support mutagenic or reproductive hazard
Acute Aquatic Toxicity: Toxic to aquatic organisms (Fish LC50: 18 mg/L, 96 hr)
Persistence and Degradability: Degrades slowly in environment, hydrolyzes to ethanol and silanols
Bioaccumulation Potential: Low potential based on chemical properties
Mobility in Soil: Absorbed to soil particulates, but ethanol by-product is mobile and volatile
Other Adverse Effects: No data on effect on ozone layer, no known major bioaccumulative potential
Waste Treatment Methods: Dispose of contents and container in accordance with national and regional regulations
Material Disposal: Do not pour into sewer or waterways, incinerate in authorized facility with emission controls
Container Disposal: Rinse thoroughly, puncture or crush before recycling or disposal
Precautions: Avoid release to environment, comply with hazardous waste regulations
UN Number: 1993
UN Proper Shipping Name: Flammable Liquid, N.O.S. (Vinyltriethoxysilane)
Transport Hazard Class: 3 (Flammable Liquid)
Packing Group: III
Labels Required: Flammable liquid
Special Precautions For Transport: Separate from food and pharmaceuticals, keep out of direct sunlight, secure against tipping or breakage
OSHA: Classified as hazardous based on flammability and skin/eye irritation
TSCA: Listed
SARA Title III: Not a regulated extremely hazardous substance
California Proposition 65: Not listed as known carcinogen or reproductive toxin
Europe (REACH): Registered, subject to standard safety precautions
Other Regulations: Subject to workplace safety and environmental emission limits; check specific country laws
