Product Name: N-Butyl Methacrylate
Chemical Formula: C8H14O2
Synonyms: 2-Methacrylic Acid n-butyl Ester, n-Butyl 2-Methyl-2-propenoate
CAS Number: 97-88-1
Recommended Use: Monomer for polymer and resin production
Manufacturer: Refer to supplier's label or documentation
Contact Point: Manufacturer’s emergency response or EH&S department
UN Number: UN 2229
Emergency Phone Number: As provided by the local regulations or supplier
GHS Classification: Flammable Liquid (Category 3), Skin Irritant (Category 2), Eye Irritant (Category 2A), Acute Toxicity Oral (Category 4), Specific Target Organ Toxicity - Single Exposure (Category 3), Marine Pollutant
Pictograms: Flame, Exclamation Mark, Health Hazard, Environment
Signal Word: Warning
Hazard Statements: May cause respiratory irritation, harmful if swallowed, causes skin irritation, causes serious eye irritation, flammable liquid and vapor, toxic to aquatic life with long lasting effects
Precautionary Statements: Keep container tightly closed, ground container when transferring product, use explosion-proof electrical equipment, avoid breathing vapors, wash hands thoroughly after handling, avoid release to the environment
Chemical Identity: N-Butyl Methacrylate
CAS Number: 97-88-1
Concentration: ≥99%
Impurities: Trace inhibitors and stabilizers such as hydroquinone monomethyl ether (MEHQ) at <0.1%, other contaminants ≤1% as permitted in manufacturing standards
Inhalation: Move person to fresh air, keep at rest, give oxygen or artificial respiration if breathing stops, seek medical attention if symptoms appear or persist
Skin Contact: Remove contaminated clothing, wash skin with plenty of water and mild soap, seek medical care if irritation continues
Eye Contact: Rinse cautiously with water for at least 15 minutes, remove contact lenses if easy to do, get medical help if irritation or pain persists
Ingestion: Rinse mouth, do not induce vomiting, seek medical advice immediately, never administer liquids to unconscious person
Suitable Extinguishing Media: Dry chemical powder, alcohol-resistant foam, carbon dioxide, water spray (do not use direct jet)
Special Hazards: Can emit toxic fumes of carbon oxides during combustion, vapors may form explosive mixtures with air, containers may explode if exposed to fire or extreme heat
Protective Equipment: Wear full protective gear including self-contained breathing apparatus
Advice for Firefighters: Control runoff water, keep unnecessary personnel away, cool tanks and containers with water spray from a safe distance, avoid breathing combustion products, limit exposure to smoke
Personal Precautions: Evacuate area, provide adequate ventilation, eliminate ignition sources, use appropriate personal protective equipment including gloves, goggles, and respirators
Environmental Precautions: Prevent entry into drains or surface water, contain spills with dikes or absorbent material, notify regulatory authorities if major spill reaches watercourse
Methods for Clean-Up: Cover with inert absorbent (sand or soil), collect in labeled containers for disposal, clean the area with water and detergent, handle under local authority guidelines for hazardous waste
Handling: Use spark-proof tools, ground all equipment during transfer, avoid inhalation and contact with skin or eyes, keep away from incompatible chemicals, avoid repeated exposure
Storage: Store in tightly sealed containers in a cool, well-ventilated place, keep away from sources of heat and direct sunlight, maintain temperature below 30°C where possible, add stabilizers if long-term storage required, segregate from acids, oxidizers, and strong alkalis
Exposure Limits: ACGIH TLV: 50 ppm TWA, OSHA PEL: 100 ppm TWA
Engineering Controls: Use with adequate local exhaust, fume hoods preferred for open transfers, maintain workplace air concentrations below recommended limits
Personal Protective Equipment: Chemical-resistant gloves (nitrile or butyl rubber), safety goggles or face shield, flame-retardant antistatic clothing, chemical-resistant footwear
Hygiene Measures: Wash hands before eating, remove contaminated clothing and wash before reuse, no smoking or open flames in work area
Appearance: Colorless to pale yellow transparent liquid
Odor: Fruity, acrid odor
Boiling Point: 162°C
Melting Point: -75°C
Flash Point: 47°C (closed cup)
Autoignition Temperature: 288°C
Vapor Pressure: 2.1 mmHg at 20°C
Relative Density: 0.897 g/cm³ at 20°C
Solubility: Insoluble in water, soluble in most organic solvents
Viscosity: 0.65 mPa·s at 20°C
Evaporation Rate: Not rapid, slower than ether
Partition Coefficient (log Kow): 2.8
Chemical Stability: Stable under recommended handling and storage, may polymerize if contaminated or past shelf life
Reactivity: Reacts with strong oxidizers, acids, bases, and amines
Conditions to Avoid: Elevated temperatures, direct sunlight, sources of ignition, contamination by incompatible chemicals
Polymerization Hazard: Risk of hazardous polymerization if inhibited stabilizer fails or substance overheats
Decomposition Products: Methacrylic acid, carbon monoxide, carbon dioxide under fire conditions
Acute Toxicity: LD50 Oral (rat): 2030 mg/kg, LD50 Dermal (rabbit): >3000 mg/kg
Inhalation Effects: Respiratory tract irritation, dizziness, headache, drowsiness at high vapor concentrations
Skin Effects: Redness, irritation, allergic reactions with prolonged contact
Eye Effects: Irritation, tearing, redness, possible corneal damage
Chronic Effects: Sensitization, possible disturbance to liver or kidney function with repeated overexposure
Mutagenicity/Carcinogenicity: Tests show no conclusive evidence of genetic damage or cancer risk in controlled exposure
Further Information: Individuals with sensitized skin may have stronger reactions, reports of chronic overexposure are rare but require occupational physician monitoring
Ecotoxicity: Toxic to aquatic organisms, can cause long-term adverse effects in the aquatic environment
Persistence and Degradability: Biodegradable over time but may persist in water and sediment for weeks
Mobility in Soil: Low to moderate; product can move through soil and reach groundwater under certain conditions
Bioaccumulation Potential: Moderate (log Kow 2.8)
Aquatic Toxicity: LC50 (fish, 96hr): 15 mg/L; EC50 (daphnia, 48hr): 56 mg/L
Environmental Precautions: Prevent release in significant quantities, avoid discharge to waterways and sewers
Waste Disposal: Dispose of by incineration by licensed hazardous waste contractor, never pour down drains or into natural bodies of water
Container Handling: Rinse and triple-wash empty containers, remove labels before recycling or disposal, puncture or crush before landfill disposal
Regulatory Requirements: Comply with local, regional, and national hazardous waste regulations, include contaminated absorbents and cleanup materials in hazardous waste stream
UN Number: UN 2229
UN Proper Shipping Name: Butyl Methacrylate, stabilized
Transport Hazard Class: 3 (Flammable Liquid)
Packing Group: III
Environmental Hazards: Marine pollutant, toxic to marine life
Special Precautions: Ensure packaging is secure and labeled correctly, keep away from incompatible freight, placards required for road, rail, and sea transport
OSHA: Classified as hazardous under the Hazard Communication Standard
TSCA: Listed on the United States Toxic Substances Control Act inventory
SARA Title III: Subject to Section 313 reporting for certain manufacturers and users
REACH: Registered in compliance for use in the European Union
Other Regulations: Subject to international air (IATA), marine (IMDG), and road/rail (ADR/RID) shipping regulations; local workplace exposure limits may vary, mandatory electronic Safety Data Sheet for handling and emergency staff
