Product Name: Methyl Methacrylate
Chemical Formula: C5H8O2
CAS Number: 80-62-6
Synonyms: 2-Methyl-2-propenoic acid methyl ester
Recommended Use: Polymer and resin production, adhesives, plastics manufacturing
Manufacturer: Refer to shipping documentation or product label for up-to-date supplier and emergency phone information
Emergency Numbers: Usually noted on label or SDS supplier section to address accidental spills or exposures
Classification: Highly flammable liquid and vapor; irritation to eyes, skin, and respiratory tract; may cause allergic skin reaction; possible central nervous system effects
Signal Word: Danger
Hazard Statements: H225 (Highly flammable), H315 (Causes skin irritation), H319 (Causes serious eye irritation), H335 (May cause respiratory irritation), H317 (May cause allergic skin reaction)
Pictograms: Flame, exclamation mark
Precautionary Statements: Keep away from heat, sparks, open flames. Wear protective gear. Use only in well-ventilated areas.
Routes of Exposure: Inhalation, ingestion, skin and eye contact
Component: Methyl Methacrylate
Chemical Identity: C5H8O2
Concentration: 98-100% by weight
Impurities: May contain trace inhibitors such as hydroquinone or methyl ether hydroquinone for stabilization
Eye Contact: Rinse with plenty of water, remove contact lenses if possible, continue rinsing, seek medical help
Skin Contact: Remove contaminated clothing, wash skin with soap and water, seek medical care if symptoms appear
Inhalation: Move to fresh air, keep person comfortable, administer oxygen if breathing is difficult, get medical attention
Ingestion: Rinse mouth, never induce vomiting unless directed, seek prompt medical advice
Most Important Symptoms: Redness, itching or pain at contact site, breathing difficulty, headache, nausea
Suitable Extinguishing Media: Foam, dry chemical, CO2, water fog only to cool containers
Hazards from Fire: MMA forms explosive mixtures with air; heated containers may rupture
Protective Equipment: Firefighters should wear full protective gear and self-contained breathing apparatus
Special Procedures: Remove containers from fire area when safe, cool exposed containers with water spray, avoid water jet
Combustion Products: Carbon monoxide, carbon dioxide, various acrid gases possible
Explosion Sensitivity: Vapor is heavier than air; can travel along ground and reach remote ignition sources
Personal Precautions: Evacuate non-essential personnel, provide suitable ventilation, use protective clothing and gloves
Spill Cleanup Methods: Eliminate all ignition sources, contain spill, absorb with inert material (sand/earth), place in chemical waste container
Environmental Precautions: Prevent entry into drains, watercourses, soil; inform authorities if significant contamination occurs
Decontamination: Wash spill area with water and detergent once material is removed
Safe Handling: Ground and bond containers during liquid transfer, keep away from sources of ignition, avoid breathing vapors, use only with adequate ventilation
Storage Requirements: Keep in tightly closed, cool, dry containers below 30°C, separate from oxidizers, acids, and peroxides
Storage Incompatibilities: Avoid contact with strong oxidizing agents, acids, bases, and polymerization initiators
Special Precautions: Store with appropriate fire protection and leak containment; use inhibitors to prevent polymerization, monitor inhibitor concentration if long-term storage
Occupational Exposure Limits: OSHA PEL: 100 ppm (410 mg/m³); ACGIH TLV: 50 ppm (205 mg/m³)
Engineering Controls: Use local exhaust ventilation, process enclosures, explosion-proof equipment
Personal Protective Equipment: Chemical-resistant gloves (nitrile/butyl rubber), eye protection (goggles/face shield), protective clothing, respiratory protection with organic vapor cartridge if exposure exceeds OEL
Hygiene Measures: Wash hands thoroughly after use, do not eat, drink, or smoke near product
Physical State: Colorless liquid
Odor: Fruity, sharp odor
Melting Point: -48°C
Boiling Point: 101°C
Flash Point: 10°C (closed cup)
Vapor Pressure: 38 mm Hg at 20°C
Density: 0.94 g/cm³ at 20°C
Solubility: Moderately soluble in water (1.5 g/100 mL at 20°C); miscible with alcohols, ethers, many organic solvents
Autoignition Temperature: 430°C
Viscosity: 0.6 mPa·s at 25°C
Evaporation Rate: 3.1 (butyl acetate = 1)
Chemical Stability: Stable with inhibitor; without inhibitor, can polymerize rapidly, sometimes explosively, especially when exposed to heat, light, or contamination
Conditions to Avoid: Heat, sunlight, ignition sources, absence of inhibitor
Incompatible Materials: Strong oxidizers, acids, bases, polymerization catalysts and initiators
Hazardous Reactions: Uncontrolled polymerization, fire, explosion risk
Decomposition Products: Carbon monoxide, carbon dioxide, other toxic vapors under fire conditions
Acute Toxicity: Oral LD50 (rat): 7872 mg/kg; Inhalation LC50 (rat, 4h): 78000 mg/m³; Dermal LD50 (rabbit): >5000 mg/kg
Chronic Effects: Repeated or prolonged exposure may cause skin sensitization, dermatitis, possible lung irritation
Routes of Exposure: Eyes, skin, respiratory system, ingestion
Symptoms: Eye and skin irritation, headache, drowsiness, dizziness for high exposure
Carcinogenicity: Not classified as carcinogenic by IARC, ACGIH, NTP, or OSHA
Mutagenicity: Negative in most standard tests
Reproductive Toxicity: No known effects on reproduction or development
Environmental Fate: Volatile, tends to evaporate from water and soil surfaces; readily biodegradable in aerobic conditions
Aquatic Toxicity: LC50 (Fish, 96h): approx 80-130 mg/L
Bioaccumulation: Low potential
Persistence: Degrades relatively quickly in the environment
Mobility in Soil: High mobility; will accumulate in air and water compartments but breaks down
Other Effects: Aqua life may experience sub-lethal effects at low concentrations; avoid uncontrolled release
Waste Treatment Methods: Incinerate in a chemical incinerator equipped with afterburner and scrubber; follow local, state, and federal environmental regulations
Contaminated Materials: Dispose of as hazardous waste, packaging should also be treated as hazardous
Disposal Precautions: Prevent entry into sewers, water courses; always consult regulations
UN Number: UN1247
Proper Shipping Name: Methyl Methacrylate, Monomer, Stabilized
Hazard Class: 3 (Flammable Liquid)
Packing Group: II
Labels: Flammable liquid
Special Transport Precautions: Keep away from heat, sparks, open flames; ensure containers are upright and secure
OSHA: Listed hazardous chemical
EPA: Listed on TSCA inventory; subject to CERCLA reporting (RQ: 1000 lbs)
WHMIS (Canada): B2 (Flammable liquid), D2B (Toxic materials)
EU Regulations: Classification under CLP/GHS; GHS02, GHS07
Other Standards: SARA Title III Section 313; subject to workplace labeling and training requirements
Restrictions: Use authorized only in accordance with safety and environmental standards set by local regulators; consult state and municipal laws for further restrictions or reporting requirements
