Product Name: 3-Methacryloyloxypropyltriethoxysilane
Chemical Formula: C13H26O5Si
Other Names: γ-Methacryloxypropyltriethoxysilane, Silane coupling agent
Recommended Uses: Adhesion promoter for plastics, resins, elastomers, surface treatment of glass and ceramics
Supplier: Major chemical supply companies (Sigma-Aldrich, Gelest, Momentive)
Contact Information: Refer to company’s product SDS page for emergency phone numbers and addresses
CAS Number: 2530-85-0
GHS Classification: Flammable liquid (Category 3), Skin irritation (Category 2), Eye irritation (Category 2A), Specific target organ toxicity (Single exposure, Category 3)
Hazard Symbols: Exclamation mark, Flame
Signal Word: Warning
Hazard Statements: Causes skin and eye irritation. May cause respiratory irritation. Flammable liquid and vapor.
Precautionary Statements: Keep away from heat/sparks/open flames. Wear protective gloves and eye protection. Use in well-ventilated areas. Avoid breathing vapors.
Chemical Name: 3-Methacryloyloxypropyltriethoxysilane
Concentration: >95%
Impurities: Trace stabilizers or by-products found in less than 1% concentration unless otherwise specified by manufacturer
Inhalation: Get person into fresh air, maintain breathing, seek medical attention for persistent symptoms (cough, respiratory difficulty)
Skin contact: Remove contaminated clothing, wash exposed skin thoroughly with soap and water, seek attention for irritation lasting longer than expected
Eye contact: Rinse immediately with plenty of water for at least 15 minutes, lift eyelids occasionally, seek prompt medical help
Ingestion: Rinse mouth with water, do not induce vomiting, seek medical attention promptly
Symptoms/effects: Eye and skin irritation, dryness or redness, headache, dizziness or respiratory discomfort from vapors
Medical notes: Symptomatic treatment only, inform medical personnel of chemical involved
Suitable extinguishing media: Water spray, alcohol-resistant foam, dry chemical, or carbon dioxide
Unsuitable extinguishing media: Direct water jet can spread fire
Fire hazards: Combustible liquid, vapors may form explosive mixtures with air, containers can explode when heated
Dangerous products of combustion: Carbon oxides (CO, CO2), silicon oxides, acrid fumes
Special protective equipment: Firefighters should wear self-contained breathing apparatus and full protective clothing
Firefighting advice: Remove containers from area if possible, cool containers exposed to fire with water spray, stay upwind, remove all sources of ignition if safe
Personal precautions: Evacuate unnecessary personnel, provide adequate ventilation, ensure use of personal protection (gloves, goggles, respirators)
Environmental precautions: Prevent entry into sewers, waterways, or soil, notify local authorities if spill enters environment
Clean-up methods: Absorb spill with inert absorbent (sand, vermiculite), place in chemical waste container for disposal, ventilate area thoroughly
Disposal: Follow local, regional, and national laws, avoid direct discharge, handle contaminated material as hazardous waste
Handling advice: Avoid inhalation, direct contact with skin and eyes, wash hands after handling, open containers in well-ventilated areas
Storage conditions: Store in original tightly closed container, in a dry, cool, well-ventilated area, away from sources of heat and ignition
Incompatibilities: Avoid water, alcohols, strong oxidizers, acids, amines, bases
Special storage notes: Keep container upright and properly labeled; store under nitrogen or dry air if possible to reduce hydrolysis risk
Engineering controls: Use local exhaust ventilation, fume hoods or process enclosures to control airborne exposures
Exposure limits: Not established for this specific chemical; recommend minimizing exposure as much as possible
Personal protection – eyes/face: Chemical safety goggles or face shield
Personal protection – skin: Chemical-resistant gloves (nitrile or butyl rubber), laboratory coat or impervious apron
Respiratory protection: Use properly fitted air-purifying respirator for organic vapor if ventilation is insufficient
Environmental controls: Keep workplace clean, promptly clean up spills
Appearance: Clear to pale yellow liquid
Odor: Ester-like, slightly pungent
Molecular weight: 276.43 g/mol
Boiling point: 290°C (estimated, decomposes)
Melting point: Not applicable, liquid at room temperature
Flash point: 108°C (closed cup)
Autoignition temperature: Not available
Explosive limits: Not available
Vapor pressure: 0.23 mmHg at 25°C
Solubility: Hydrolyzes slowly in water, soluble in organic solvents (alcohols, ethers)
Density: 1.045–1.065 g/cm³ at 20°C
Viscosity: 2–10 mPa·s at 25°C
pH: Not applicable
Stability: Stable under recommended storage conditions, hydrolyzes in presence of moisture
Polymerization: May occur under certain conditions (heat, contamination, presence of peroxides), stabilized with inhibitors
Conditions to avoid: Heat, open flame, moisture, sources of ignition
Incompatible materials: Strong oxidizing agents, acids, bases, water, strong reducing agents
Hazardous decomposition: Methacrylic acid, silicon oxides, carbon oxides, ethyl alcohol
Special safety notes: Exothermic polymerization possible in presence of peroxides or elevated temperatures
Acute toxicity – oral: LD50 (rat) 8025 mg/kg
Acute toxicity – dermal: Mild to moderate irritant to skin and eyes, no serious injury under normal handling
Acute toxicity – inhalation: Vapors may cause coughing, dizziness, respiratory irritation at elevated concentrations
Skin/eye contact: Causes redness, pain, and possible sensitization with repeated exposure
Chronic effects: Prolonged or repeated exposure can lead to dermatitis or respiratory sensitization
Carcinogenicity/mutagenicity: No reliable animal or epidemiological evidence for carcinogenicity, mutagenicity, or reproductive toxicity with standard industrial use
Target organs: Skin, eyes, respiratory tract
Aquatic toxicity: Low solubility in water, may hydrolyze slowly to silanols, moderate toxicity to aquatic organisms in concentrated spill
Environmental fate: Undergoes hydrolysis in moist air and water to produce silanols and organic fragments, ultimately degraded by microbes
Persistence/degradability: Hydrolyzes and degrades with time; not classified as persistent under common use scenarios
Bioaccumulation: Potential for low to moderate bioaccumulation in aquatic species due to moderate log Kow values
Other effects: Avoid direct release to soil, water, or drains
Disposal methods: Dispose in accordance with local, regional, and national requirements, must not be discharged unchecked into environment
Container disposal: Empty containers thoroughly, triple rinse, drain dry, puncture or crush before recycling or disposal at licensed facility
Precautions: Ensure waste is classified and labeled in compliance with hazardous waste regulations, segregate incompatible chemicals
UN Number: 1993
UN Proper Shipping Name: Flammable liquid, n.o.s. (3-Methacryloyloxypropyltriethoxysilane)
Transport hazard class: 3 (Flammable liquid)
Packing group: III
Labels required: Flammable liquid
Marine pollutant: No
Special transport notes: Keep container tightly closed, upright, and protected from physical damage during transport
TSCA (US): Listed
REACH (EU): Registered (consult registration details for specific uses and restrictions)
OSHA (US): Considered hazardous by definition of Hazard Communication Standard
WHMIS (Canada): Flammable liquid, moderate health hazard
DSL/NDSL (Canada): Listed
Other: Refer to local regulations for country- or industry-specific requirements, ensure compliance with workplace chemical safety laws
