Product Name: 3-Acryloxypropyltrimethoxysilane
Synonyms: 3-(Trimethoxysilyl)propyl acrylate; Acryloxypropyltrimethoxysilane
CAS Number: 4369-14-6
Recommended Use: Coupling agent, silane monomer for polymer modification, surface treatment
Manufacturer Contact: Emergency phone and official contact details available from supplier’s website or product label
Classification: Skin irritation (Category 2), Eye irritation (Category 2A), Skin sensitisation (Category 1), Specific target organ toxicity single exposure
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation; May cause allergic skin reaction; May cause respiratory irritation
Pictograms: Exclamation mark
Precautionary Statements: Avoid breathing vapors; Wash hands after handling; Use only outdoors or in well-ventilated area; Wear protective gloves/eye protection
Potential Health Effects: Contact with the skin can trigger rashes and itching; Eye exposure results in burning sensations, redness, blurred vision; Inhalation exposes lungs to irritation and coughing; Sensitization may set in after repeated or prolonged contact
Chemical Name: 3-Acryloxypropyltrimethoxysilane
CAS Number: 4369-14-6
Content: Typically ranges from 97% up to 100%
Impurities: Trace amounts of methanol formed during hydrolysis; Minor organic acids may be present in less than 1%
Molecular Formula: C9H18O5Si
Molecular Weight: 234.33 g/mol
Inhalation: Move person to fresh air; keep comfortable for breathing; get medical attention for persistent symptoms like coughing or sore throat
Skin Contact: Strip off contaminated clothing; flush skin with lots of water and gentle soap for up to 20 minutes; if irritation or a rash develops, seek medical support
Eye Contact: Rinse eyes gently with water for at least 15 minutes, pulling eyelids away from eyeball; Do not rub eyes; Remove contact lenses if present and easy to do; Get medical advice if any burning, redness or vision changes linger
Ingestion: Do not induce vomiting; rinse mouth thoroughly; drink water in small sips; seek medical advice immediately and show product label
Most Important Symptoms: Skin and eye irritation, redness, itchiness, coughing, shortness of breath, headache
Suitable Extinguishing Media: Dry chemical, carbon dioxide, foam or water spray
Unsuitable Extinguishing Media: Strong direct water jets can cause product to splatter
Specific Hazards: Flammable vapors can be released above 85°C; Combustion generates toxic and corrosive fumes like carbon monoxide, carbon dioxide, silicon oxides, and formaldehyde
Protective Equipment: Respiratory protection (self-contained breathing apparatus) and full firefighting gear required, including protective gloves and boots
Advice to Firefighters: Contain runoff; cool exposed containers with water spray; avoid inhaling vapors and fumes during firefighting efforts
Personal Precautions: Evacuate non-essential personnel from the spill area; ventilate the space immediately; wear gloves, goggles, chemical-resistant shoes, and clothing
Environmental Precautions: Stop product from entering drains, surface water, or groundwater; warn local authorities if large amounts reach open water or soil
Methods for Clean-Up: Use non-sparking tools and absorb spillage using sand, inert absorbent, or commercially available absorbents; collect residue by shoveling into suitable waste containers; Wash spill area thoroughly once cleaned
Disposal: Wear personal protection for clean-up and ensure all waste complies with disposal regulation for your region
Handling: Use only within well-ventilated spaces; avoid inhaling vapors or mists; keep away from ignition sources; wear chemical-resistant gloves, protective gear, and goggles at all times during transfers or usage
Storage: Keep in original, tightly closed container; store away from direct sunlight, moisture, and incompatible products like oxidizers, acids, and bases; keep at ambient temperatures below 30°C; never store with food or personal use items
Special Precautions: Ground and bond containers during transfer; avoid static discharge; use spark-proof tools
Occupational Exposure Limits: No specific limit for this chemical, but workplace exposure should remain at the lowest feasible level; monitor for methanol as byproduct (< 200 ppm OSHA)
Engineering Controls: Use exhaust ventilation or fume hoods in areas of potential vapor or aerosol release
Personal Protective Equipment (PPE): Gloves (nitrile, rubber); tightly sealed goggles; long-sleeved clothing or lab coat; approved respirator for spray or insufficient airflow
Hygiene Measures: Wash hands thoroughly after handling; remove contaminated clothing and protective gear before eating, drinking, or using toilet; launder work garments regularly
Appearance: Colorless to light yellow transparent liquid
Odor: Acrylate or faint ester odor
pH: Not measurable (reacts with water)
Melting Point: Data not available; remains liquid at standard temperatures
Boiling Point: 210°C (estimated)
Flash Point: 101°C (closed cup)
Evaporation Rate: Slow
Flammability: Combustible liquid, can form flammable mixtures with air
Auto-ignition Temperature: Above 200°C
Explosive Limits: Lower: 1.8%, Upper: 13.0% (for vapors/solvent mixture)
Vapor Pressure: 0.7 mmHg at 25°C
Vapor Density: 1.1 (air = 1)
Solubility: Hydrolyzes/splits in contact with water; miscible in alcohols and most organic solvents
Partition Coefficient (log Kow): Data not listed
Decomposition Products: Methanol and formaldehyde potential with water or strong heat
Chemical Stability: Stable under recommended handling and storage
Reactivity: Reacts on contact with water, alcohols, strong acids or bases
Hazardous Reactions: Hydrolysis releases methanol; acrylic group can polymerize spontaneously with heat, light, or catalysts
Conditions to Avoid: Exposure to moisture, elevated temperatures, sources of ignition, and contact with incompatible chemicals
Incompatible Materials: Acids, bases, oxidizers, moisture, amines
Hazardous Decomposition: Methanol, acrylate degradation products, silicon oxides, carbon oxides, formaldehyde
Acute Toxicity: Oral LD50 (rat): approx 2000 mg/kg; Inhalation LD50 and Dermal LD50 data limited
Skin Corrosion/Irritation: Prolonged or repeated exposure may cause irritation, redness, dry skin, sensitization
Eye Damage/Irritation: Can result in serious eye damage or persistent irritation
Respiratory Sensitisation: May cause breathing difficulties if vapor inhaled; repeated exposure can trigger pulmonary sensitization
Skin Sensitisation: Sensitizing in susceptible individuals; allergic reactions, dermatitis, itching, hives
Chronic Effects: Prolonged exposure can lead to allergic reactions, chronic dermatitis, possible lung function impacts
Carcinogenicity/Mutagenicity: Not classified as carcinogenic by IARC or OSHA at present
Reproductive Toxicity: No conclusive data available
Ecotoxicity: Toxic to aquatic organisms at higher concentrations; acute toxicity to fish, Daphnia and algae observed in laboratory studies
Persistence and Degradability: Rapid hydrolysis in water produces methanol and silanols; breakdown products further degrade in environment
Bioaccumulation Potential: Low for parent compound; high water solubility means most material disperses quickly
Mobility: Likely to move into soil or water and degrade rapidly
Other Adverse Effects: Byproducts such as methanol can have moderate environmental impacts; avoid release into environment
Waste Disposal Methods: Dispose in accordance with national and local laws; never pour unused product down drains or into open water
Packaging: Triple rinse and recycle or dispose of containers in accordance with regulations; never reuse emptied containers for food, water, or animal feed
Special Precautions: Use licensed chemical waste contractor for disposal; label all waste clearly; keep away from incompatibles until collection
UN Number: UN 1993
Proper Shipping Name: Flammable Liquid, N.O.S. (contains 3-Acryloxypropyltrimethoxysilane)
Hazard Class: 3 (Flammable liquid)
Packing Group: III
Environmental Hazards: Not classified as marine pollutant
Transport Precautions: Avoid containers damage, maintain upright position, keep away from direct sunlight and ignition sources; Secure transportation per ADR, IMDG, or IATA rules
TSCA (USA): Listed
REACH (Europe): Registered substance
OSHA Hazards: Flammable, skin and respiratory sensitizer
SARA Title III: Not listed as extremely hazardous, but methanol byproduct is subject to reporting
WHMIS (Canada): Flammable, skin and eye irritant, sensitizer
California Proposition 65: Methanol produced in hydrolysis process is listed as reproductive toxin
Other National/International Regulations: Check with local and regional authorities for any further restrictions
