Product Name: 3-(Methacryloxy)Propylmethyldiethoxysilane
SYNONYMS: γ-Methacryloxypropylmethyldiethoxysilane
CAS Number: 7307-08-0
Recommended Use: Surface modifier, adhesion promoter in coatings and sealants, plastic and rubber manufacturing
Supplier: Listed supplier’s full name, physical address, and emergency phone number
Email Contact: Supplier’s email for customer queries
Emergency Telephone: Regional emergency contact or CHEMTREC number
GHS Label: Flammable Liquid, Skin Sensitizer, Serious Eye Irritant
Signal Word: Warning
Hazard Statements: Flammable liquid and vapor, causes skin and eye irritation, possible respiratory irritation, may cause allergic skin reaction
Pictograms: Flame, exclamation mark
Precautionary Statements: Keep away from heat and open flames, avoid skin and eye contact, use personal protective equipment, avoid breathing vapor
Routes of Exposure: Skin, eyes, inhalation, ingestion
Most Important Hazards: Contact with moisture causes dangerous hydrolysis, volatile fumes can irritate respiratory tract
Chemical Name: 3-(Methacryloxy)Propylmethyldiethoxysilane
CAS Number: 7307-08-0
Percent: 95–100%
Impurities/Additives: May contain residual methacrylic acid (CAS 79-41-4), diethoxysilane derivatives
Inhalation: Move individual to fresh air, keep comfortable and at rest; if breathing is irregular or stops, provide artificial respiration and get medical attention
Skin Contact: Remove contaminated clothing, flush with plenty of water; seek medical attention if irritation develops
Eye Contact: Irrigate eyes with water for at least 15 minutes, hold eyelids apart, seek medical advice promptly
Ingestion: Rinse mouth, do not induce vomiting, get immediate medical attention
Most Important Symptoms: Redness, pain, swelling, allergic skin reaction, persistent respiratory symptoms
Suitable Extinguishing Media: Alcohol-resistant foam, dry chemical powder, CO₂, water spray
Unsuitable Media: Direct water stream causes spattering
Hazardous Combustion Products: Carbon oxides, silicon oxides, formaldehyde, methacrylate fumes
Special Firefighting Procedures: Wear self-contained breathing apparatus, use protective clothing, remove containers from fire area if possible without risk
Fire/Explosion Hazards: Vapor is heavier than air, can accumulate in low places and ignite
Personal Precautions: Evacuate personnel to safe areas, ventilate area, wear chemical splash goggles, gloves, and protective clothing
Environmental Precautions: Prevent spilled product from entering drains, waterways, or soil
Cleanup Methods: Absorb spill with inert absorbent (dry sand, earth); collect in suitable closed container, dispose via approved facility
Decontamination: Wash spill area with water and detergent after collection
Safe Handling: Use only outdoors or in well-ventilated area; avoid breathing vapor or mist; wash thoroughly after handling; do not eat, drink, or smoke during use
Storage Conditions: Keep containers tightly closed in a cool, dry, well-ventilated place, away from heat sources, direct sunlight, or humidity
Storage Incompatibilities: Strong acids, bases, oxidizing agents, water/moisture
Container Materials: Store only in original packaging or compatible, sealable chemical containers with correct labeling
Exposure Limits: No established occupational exposure limits; observe good industrial hygiene
Engineering Controls: Local exhaust and general ventilation to control airborne concentrations
Personal Protective Equipment: Chemical safety goggles or face shield, nitrile or neoprene gloves, impervious protective clothing, safety shoes
Respiratory Protection: Approved respirator in situations with inadequate ventilation
Hygienic Practices: Wash hands before breaks, do not touch face or eyes while handling chemical
Appearance: Clear, colorless to slightly yellowish liquid
Odor: Faint, ester-like
Boiling Point: 104-107°C (at 15 mmHg)
Melting Point: Not applicable (liquid at room temperature)
Flash Point: 97°C (closed cup)
Vapor Pressure: Approximately 0.3 mmHg at 20°C
Solubility: Reacts slowly with water; soluble in organic solvents
Specific Gravity: 1.02–1.04 (20°C)
pH: Not applicable (reacts with water to produce acid)
Partition Coefficient (n-octanol/water): Not determined
Viscosity: 3–5 mPa·s at 25°C
Chemical Stability: Stable under recommended storage conditions; reacts with moisture, releases methacrylic acid
Conditions to Avoid: Static discharge, heat, sparks, open flame, humidity
Incompatible Materials: Water, acids, alkalis, oxidizing agents, amines
Hazardous Decomposition Products: Methacrylic acid, formaldehyde, silicon oxides
Polymerization: Exothermic polymerization possible in contact with incompatible substances or at elevated temperatures
Acute Toxicity: Oral LD50 (rat) >5000 mg/kg; limited inhalation toxicity data
Skin Irritation: May cause irritation or allergic reaction
Eye Irritation: Causes severe eye irritation
Respiratory Sensitization: Reports of respiratory symptoms after high-level exposure
Chronic Exposure: Prolonged skin contact increases risk of dermatitis; habitual exposure aggravates respiratory conditions
Carcinogenicity: Not listed as carcinogen by IARC, NTP, or OSHA
Aquatic Toxicity: LC50 (Fish, 96h) >100 mg/L; moderately toxic to aquatic life
Persistence and Degradability: Hydrolyzes in moist air, resulting by-products may persist
Bioaccumulation Potential: Low risk based on molecular characteristics
Mobility in Soil: Mobile in liquid form, bonds with organic matter after hydrolysis
Other Adverse Effects: Product decomposes to methacrylic acid, can harm soil microflora
Waste Disposal Methods: Dispose of as hazardous chemical waste according to local, regional, and national regulations
Container Disposal: Triple rinse containers, puncture, offer for recycling or approved landfill if in line with rules
Contaminated Materials: Dispose of absorbents and protective wear at licensed hazardous waste facility
UN Number: 1993
Proper Shipping Name: Flammable liquid, n.o.s. (Contains 3-(Methacryloxy)Propylmethyldiethoxysilane)
Hazard Class: 3
Packing Group: III
Labeling: Flammable liquid pictogram
Special Precautions: Avoid contact with water and heat during transport
Regulatory Requirements: Comply with all local and international rules for flammable liquid shipping
Inventory Listings: Registered or notified under major chemical inventories (TSCA, REACH, DSL, EINECS)
OSHA Classification: Hazardous
SARA Title III: Not subject to specific reporting requirements
California Proposition 65: Not listed
Other Regulations: Subject to workplace safety regulations, Environmental Protection Agency monitoring for release and disposal
