Product Name: Vinyltriacetoxysilane
Synonyms: Triacetoxy(ethyl)silane, Silane, ethenyltriacetoxy-
Chemical Formula: C8H14O6Si
CAS Number: 4130-08-9
Recommended Uses: Used as a cross-linking agent in sealants, adhesives, and as a coupling agent for surface treatments
Manufacturer Information: Contact details for supplier or manufacturer including address, phone number, and emergency contact resources
Classification: Corrosive to skin and eyes, flammable liquid and vapor
Hazard Statements: Causes severe skin burns and eye damage; harmful if swallowed; harmful if inhaled; flammable; may release acetic acid vapors
Symbol/Pictogram: GHS05 (Corrosion), GHS02 (Flame), GHS07 (Exclamation mark)
Signal Word: Danger
Precautionary Statements: Avoid breathing vapors, wear protective gloves, clothing, and goggles, keep away from ignition sources, wash thoroughly after handling, use only outdoors or in a well-ventilated area
Potential Health Effects: Eyes and skin burns, respiratory tract irritation, ingestion hazard, aggravation of existing lung or skin conditions
Chemical Name: Vinyltriacetoxysilane
Chemical Formula: C8H14O6Si
Component: Vinyltriacetoxysilane
Concentration: >98%
Impurities: Trace acetic acid, unreacted chlorosilanes (if present, typically <1%), trace residual solvents if present (process dependent)
Eye Contact: Immediately flush eyes with plenty of water for at least 15 minutes, holding eyelids apart, seek immediate medical attention
Skin Contact: Remove contaminated clothing, wash affected skin thoroughly with plenty of soap and water, do not neutralize with chemical agents, seek medical help
Inhalation: Move person to fresh air, keep at rest, provide artificial respiration or oxygen if needed, seek immediate medical care
Ingestion: Rinse mouth, do not induce vomiting, give water if conscious, never give anything by mouth to an unconscious person, get medical assistance promptly
Most Important Symptoms: Severe irritation and burns to all contacted tissue, risk of permanent eye injury, respiratory irritation, gastrointestinal distress
Medical Attention and Special Treatment: Symptomatic and supportive care, ensure physician informed of chemical nature of exposure
Suitable Extinguishing Media: Dry powder, carbon dioxide (CO2), foam, alcohol-resistant foam
Unsuitable Media: Direct water jets may cause spattering or spread fire
Special Hazards: Produces acetic acid and potentially toxic fumes under heat or fire conditions, volatile vapors may travel and ignite at a distance
Protective Equipment: Self-contained breathing apparatus (SCBA), chemically resistant gloves and full protective clothing
Specific Procedures: Keep containers cool with water spray, avoid water runoff contamination, collect fire extinguishing water separately
Decomposition Products: Silicon dioxide, carbon oxides, acetic acid vapors, other organic vapors
Personal Precautions: Evacuate area, ventilate well, wear full face protection, chemical-resistant gloves, splash suit or apron, prevent skin and eye contact
Environmental Precautions: Prevent entry into drains, water courses, or soil, contain spillage with inert absorbent (sand, vermiculite)
Clean-Up Methods: Absorb liquid in non-combustible inert absorbent, scoop up and collect for disposal in sealed metal containers, wash down contaminated area thoroughly with copious water
Emergency Procedures: Restrict nonessential personnel, ensure good ventilation, remove ignition sources
Reference to Other Sections: Notify authorities if large quantity enters waterways, refer to waste disposal and personal protection sections for guidance
Handling: Use chemical fume hood or local exhaust when pouring or mixing, ground equipment to prevent static discharge, do not breathe vapor or mist, avoid contact with skin, eyes, and clothing; keep away from food and beverages, wash hands before eating or smoking
Storage: Keep containers tightly closed in a cool, dry, well-ventilated area, away from direct sunlight and moisture, store away from oxidizers, acids, bases, or materials reaction with acids, store in original containers
Incompatible Materials: Strong acids, strong bases, oxidizing agents, amines, alcohols, water (hydrolyzes to form acetic acid)
Storage Temperature: Stable at ambient temperatures; elevated temperatures can increase pressure or degrade product
Other Precautions: Label containers clearly; do not reuse containers without cleaning
Exposure Limits: Occupational exposure limits for acetic acid (10 ppm TWA, 15 ppm STEL), no established limit for parent compound
Engineering Controls: Systems with local exhaust ventilation, safety showers, eye wash stations in proximity
Personal Protective Equipment: Splash-proof goggles or face shield, chemical-resistant gloves (nitrile or butyl), long-sleeve clothing, apron
Respiratory Protection: Air-purifying NIOSH/MSHA-approved respirators for organic vapors or gases, self-contained breathing apparatus for high vapor concentrations
Work Hygiene: Prevent repeated skin contact by routine washing; do not eat, drink, or smoke near work area; remove contaminated clothing immediately
Appearance: Colorless to pale yellow liquid with pungent, vinegar-like odor
Odor: Pungent, acetic acid-like
Odor Threshold: Detectable at very low levels due to acetic acid formation
pH: Hydrolyzes in water to form acidic solution
Melting Point/Freezing Point: -40°C (approximate)
Boiling Point: 150°C
Flash Point: 45°C (closed cup)
Evaporation Rate: Moderate (faster than water, influenced by temperature)
Flammability: Flammable liquid and vapor
Vapor Pressure: 3 mmHg at 20°C
Vapor Density: Heavier than air
Relative Density: 1.12 g/cm³ at 25°C
Solubility: Reacts with water, soluble in most organic solvents
Partition Coefficient (n-octanol/water): Not readily available; hydrolyzes rapidly in water
Autoignition Temperature: Data not complete, risk of ignition if heated above flash point
Decomposition Temperature: Decomposes above 150°C with acetic acid release
Chemical Stability: Stable under recommended storage and handling conditions, hydrolyzes rapidly with moisture exposure
Reactivity: Reacts with water, acids, bases to form silanols and acetic acid; may cause delayed container pressurization
Hazardous Reactions: May produce acetic acid vapors, exothermic reaction on contact with water or aqueous materials
Conditions to Avoid: Excessive heat, open flame, moisture, incompatible materials
Incompatible Materials: Water, alcohols, alkalis, amines, oxidizers, many metals
Hazardous Decomposition Products: Silicon dioxide, carbon oxides, acetic acid, organic vapors
Polymerization: No known hazardous polymerization under normal use
Acute Toxicity: Inhalation of vapor can cause respiratory irritation, headache, dizziness; oral LD50 (rat) reportedly >1600 mg/kg; dermal exposure causes moderate-to-severe irritation and burns
Skin Corrosion/Irritation: Strongly corrosive, can cause severe reddening, blistering, necrosis
Serious Eye Damage/Irritation: Causes blindness or severe ocular injury on contact
Respiratory Sensitization: Repeated inhalation may result in chronic pulmonary symptoms
Carcinogenicity: No reliable evidence for carcinogenic effect in humans
Reproductive Toxicity: No reliable animal or human studies linking to reproductive effects
Target Organs: Skin, eyes, mucous membranes, respiratory tract
Chronic Effects: Chronic skin exposure can cause defatting, eczema; severe exposure may aggravate asthma or bronchial disorders
Ecotoxicity: Toxic to aquatic organisms; liquid and vapor phase, due to breakdown to acetic acid and silanols
Persistence and Degradability: Easily hydrolyzed to acetic acid (readily biodegradable) and silanols/siloxanes (less biodegradable)
Bioaccumulation: Not expected to bioaccumulate; primary metabolites are small molecules
Mobility: Volatile, may leach with contaminated runoff, spillages risk contaminating groundwater
Other Adverse Effects: Local pH shifts in water bodies; siloxane breakdown products could persist in environment
Waste Methods: Do not discharge to drains or environment; collect and transfer to a licensed chemical waste facility for incineration or approved solvent reclamation process
Contaminated Packaging: Triple-rinse and dispose of in accordance with local, regional, national regulations; do not reuse containers
Special Precautions: Solidify residues with suitable absorbent before disposal; reference handling instructions for appropriate PPE
Local Regulations: Comply fully with relevant hazardous waste disposal regulations (EPA, local authority, etc.)
UN Number: 1993
UN Proper Shipping Name: Flammable liquid, n.o.s. (contains Vinyltriacetoxysilane)
Transport Hazard Class: 3 (Flammable liquids)
Packing Group: III
Labeling: Flammable liquid, corrosive (per transport requirements)
Environmental Hazards: Marine pollutant (acetic acid by-product, siloxanes possible)
Special Precautions: Do not transport with incompatible materials; ensure containers are upright and well-sealed; provide detailed emergency response information when shipping
Classification: OSHA hazardous material; covered by hazard communication standards
Inventory Status: Listed in TSCA Inventory (USA), DSL (Canada), EINECS (Europe)
SARA Title III: Subject to reporting under Sections 311/312 (acute health, fire hazard); no specific Section 313 reporting requirement
Risk Phrases: R10 (Flammable), R34 (Causes burns), R20/22 (Harmful by inhalation and if swallowed)
Safety Phrases: S26 (In case of contact with eyes, rinse and seek medical advice), S36/37/39 (Wear suitable protective clothing, gloves, eye/face protection)
Workplace Restrictions: Handle per OSHA, ACGIH, and national occupational exposure limits or guidance
Other Regulation: All imports and exports to comply with local chemical safety and transport controls
