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Product Name: Vinyltrichlorosilane, Stabilized
Synonyms: Trichlorovinylsilane
CAS Number: 75-94-5
Recommended Use: Industrial chemical synthesis, intermediate in organosilicon production
Manufacturer: Not specified
Emergency Number: Chemtrec 1-800-424-9300
Address for Inquiries: Contact your local chemical supplier or distributor
GHS Classification: Corrosive to metals, acute toxicity (oral, inhalation, dermal), serious eye damage, skin corrosion, specific target organ toxicity (single exposure), hazardous to aquatic life
Signal Word: Danger
Hazard Statements: Causes severe skin burns and eye damage, toxic if inhaled, causes serious eye damage, may cause respiratory irritation, dangerous to aquatic organisms
Pictograms: Corrosive, Acute Toxicity, Exclamation Mark, Environment
Precautionary Statements: Avoid breathing dust/vapors; wash skin thoroughly after handling; use only outdoors or in well-ventilated area; avoid release to the environment; wear protective gloves, clothing, and eye/face protection
Chemical Name: Vinyltrichlorosilane
CAS Number: 75-94-5
Concentration: ≥98%
Stabilizer/Impurities: Trace hydrochloric acid, trace stabilizing agents (proprietary, to inhibit polymerization)
Inhalation: Remove to fresh air, seek immediate medical attention, support breathing as needed
Skin Contact: Remove contaminated clothing, rinse skin with copious water for at least 15 minutes, seek medical help for burns
Eye Contact: Rinse eyes with water for at least 20 minutes while holding eyelids open, remove contact lenses if present and easy, seek urgent ophthalmological assistance
Ingestion: Rinse mouth, do not induce vomiting, never give anything by mouth to an unconscious person, seek immediate medical attention
Advice for Medical Professionals: Treat as chemical burn, consider possible pulmonary edema after inhalation, symptomatic treatment only
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam, do not use water jets directly on spill
Specific Hazards: Emits toxic fumes of hydrogen chloride and phosgene under fire conditions, vapor is heavier than air
Special Protective Equipment: Full firefighting turnout gear, self-contained breathing apparatus
Firefighting Instructions: Isolate scene, cool containers with water spray from a safe distance, dike runoff to prevent entry into waterways, use caution with water as violent reaction with water may occur
Personal Precautions: Evacuate area, wear chemical-resistant gloves and full-face respirator, avoid all contact
Environmental Precautions: Prevent release to drains, surface water or soil, notify authorities in accordance with local regulations
Methods for Cleaning Up: Absorb with inert material (sand, earth), collect in sealable, chemically resistant containers for disposal, ventilate area, do not flush with water
Emergency Procedures: Restrict access, ventilate area, use non-sparking tools
Handling: Always use chemical fume hood, avoid all personal contact, prevent release to environment, keep away from water, wear appropriate PPE for skin, eyes, and respiratory system
Storage: Store in tightly sealed steel containers under dry, inert atmosphere (nitrogen or argon preferred), in a cool, well-ventilated area, away from sources of water and incompatible materials (such as strong bases and oxidizers), secondary containment recommended, periodic inspection for container integrity strongly advised
Occupational Exposure Limits: OSHA PEL: Not established; ACGIH TLV: Not established; respirable vapor should be kept below 1 ppm
Engineering Controls: Local exhaust ventilation, explosion-proof equipment necessary, maintain negative pressure in handling zones
Personal Protection: Chemical resistant gloves (butyl rubber, Viton preferred), splash-proof goggles, face shield, flame resistant lab coat, NIOSH-approved full-face respirator for organic vapors and acid gases
Hygiene Measures: Wash hands, forearms, and face thoroughly after handling, remove contaminated clothing/wash before reuse, do not eat, drink or smoke in work area
Appearance: Clear, colorless to slightly yellow liquid
Odor: Sharp, pungent hydrochloric acid-like
Odor Threshold: Not available
pH: Reacts with water to form hydrochloric acid
Melting Point/Freezing Point: -91°C
Boiling Point: 91–93°C at 760 mmHg
Flash Point: Not established, presumed below 40°C
Evaporation Rate: Not determined
Vapor Pressure: ~85 mmHg at 20°C
Vapor Density: 5.2 (air=1)
Solubility: Decomposes in water, soluble in organic solvents
Partition Coefficient (n-octanol/water): Not available
Decomposition Temperature: Not established
Viscosity: Not determined
Chemical Stability: Stable under inert conditions, sensitive to moisture
Conditions to Avoid: Moisture, humidity, open flames, heat, direct sunlight
Incompatible Materials: Water, strong bases, strong oxidizers, alcohols, amines
Hazardous Decomposition Products: Hydrogen chloride, silicon oxides, phosgene (trace, in fire)
Routes of Exposure: Inhalation, skin contact, eye contact, ingestion
Acute Toxicity: LD50 (oral, rat): 630 mg/kg
Skin Corrosion/Irritation: Causes severe burns
Serious Eye Damage/Irritation: Causes severe eye damage
Respiratory Sensitization: Not classified, but vapor is irritating
Carcinogenicity: Not classified as human carcinogen by IARC, NTP, or OSHA
Other Health Effects: Prolonged exposure causes lung damage, risk of pulmonary edema, chronic effects from repeated exposure to vapors
Ecotoxicity: Very toxic to aquatic life, releases hydrochloric acid upon hydrolysis
Persistence/Degradability: Rapid hydrolysis in water to hydrochloric acid and siloxanes
Bioaccumulation Potential: Not expected due to rapid breakdown in moist environments
Mobility in Soil: Reacts rapidly with moisture in soil, low mobility as parent compound
Other Adverse Effects: Spillage threatens fish and aquatic invertebrates; chronic environmental toxicity risk in cases of repeated accidental releases
Methods of Disposal: Treat as hazardous waste, incinerate in licensed chemical incinerator equipped with afterburner and scrubber, avoid discharge to sewers or water sources, neutralize with alkaline scrubbers prior to ultimate disposal
Containers: Rinse residue with suitable solvent, triple rinse then offer for reconditioning or disposal as hazardous waste
Special Precautions: Consult local, state, and federal authorities for specific regulations, never landfill untreated waste, use only trained chemical disposal contractors
UN Number: 1305
Proper Shipping Name: Vinyltrichlorosilane
Class: 3 (Flammable liquid); 8 (Corrosive)
Packing Group: I
Environmental Hazards: Marine pollutant, reportable quantity (see national regulations)
Transport Labels: Flammable Liquid, Corrosive
Special Precautions: Ship in tightly sealed, approved containers, only by trained personnel, emergency plans needed for accidental release in transit
OSHA Status: Regulated hazardous material
TSCA: Listed
SARA Title III: Section 302/304 extremely hazardous, Section 313 subject to reporting
CERCLA: Reportable quantity due to hydrochloric acid potential
California Prop 65: Not listed
European Regulation (EC) No 1272/2008: Classified as hazardous
Other National Regulations: Highly regulated in most regions, restrictions apply based on risk to workers and environment
