Product Name: N-Butyl Acrylate
Chemical Formula: C7H12O2
CAS Number: 141-32-2
Synonyms: Butyl 2-propenoate; n-Butyl Acrylate
Recommended Use: Used for manufacturing polymers and resins, paints, adhesives, textiles, coatings, and sealants
Supplier Details: Company address, emergency contact number, email, and phone for inquiries and emergencies related to chemical exposure, transportation, or spills are important
Emergency Exposure Information: CHEMTREC support available 24/7 for industrial chemical emergencies
GHS Classification: Flammable Liquid (Category 3); Acute Toxicity - oral, dermal, inhalation (Category 4); Skin Irritant (Category 2); Eye Irritant (Category 2A)
Label Elements: Pictograms: Flame, Exclamation Mark
Signal Word: Warning
Hazard Statements: Harmful if inhaled, ingested, or absorbed through skin. Causes skin and eye irritation. May form explosive mixtures with air. Vapors heavier than air.
Precautionary Statements: Avoid breathing vapors. Wash hands thoroughly after handling. Wear eye/face protection and gloves. Keep away from heat, sparks, open flames. Take precautionary measures against static discharge. Well-ventilated workspaces reduce risks.
Symptoms of Exposure: Headache, dizziness, irritation of eyes, nose, throat, skin redness, dermatitis after repeated or prolonged skin exposure
Chemical Name: N-Butyl Acrylate
Concentration: ≥99% (typical purity); minor impurities may include hydroquinone monomethyl ether (as stabilizer; 10-50 ppm), trace acrylic acid
CAS Registry Number: 141-32-2
Impurities/ Additives: Hydroquinone monomethyl ether stabilizer used to prevent polymerization during storage
Inhalation: Immediately move victim to fresh air. Monitor for breathing difficulties or coughing. Seek medical attention if symptoms (drowsiness, headache, respiratory discomfort) persist or worsen.
Skin Contact: Remove contaminated clothing. Wash exposed skin with plenty of soap and water. Treat persistent redness, irritation, or blistering by contacting medical professionals.
Eye Contact: Flush eyes with large volumes of water for at least 15 minutes, occasionally lifting eyelids. Remove contacts if present and easy. Immediate medical consultation for pain, irritation, or vision changes should not be delayed.
Ingestion: Rinse mouth. Never induce vomiting in an unconscious person. Contact poison control or a healthcare professional right away.
Suitable Extinguishing Media: Use dry chemical, carbon dioxide, foam, or water spray. Alcohol-resistant foam offers good results in large fires.
Unsuitable Media: Direct streams of water may spread flames
Specific Hazards: Flammable vapor may travel to distant ignition sources. Fumes can ignite easily. Combustion releases carbon monoxide, carbon dioxide, irritating acrid smoke, and toxic vapors.
Special Protective Equipment: Firefighters need self-contained breathing apparatus (SCBA) and full protective gear. Stay upwind of hazard. Use caution, as containers may rupture in the heat.
Explosion Data: Vapors may form explosive mixtures with air and settle in low-lying areas or drains.
Personal Precautions: Evacuate unprotected personnel. Remove ignition sources. Deploy explosion-proof equipment.
Protective Equipment Required: Wear suitable protective clothing, nitrile gloves, chemical splash goggles, and respirator for large spills
Environmental Precautions: Prevent entry into waterways, drains, and soil. Report releases in accordance with local and national regulations.
Spill Response: Contain and absorb liquid with inert material like sand or earth. Do not use combustible absorbents (such as sawdust). Collect and place in sealed, labeled containers for disposal according to Section 13. Wash area with plenty of water after cleanup.
Handling: Use only with adequate ventilation and local exhaust. Avoid inhalation of vapor or mist, skin and eye contact. Ground and bond containers and equipment to avoid static buildup. Do not eat, drink, or smoke in handling areas.
Storage: Store in tightly closed, clearly labeled containers in cool, well-ventilated places away from direct sunlight and ignition sources. Keep stabilized with added inhibitor (hydroquinone monomethyl ether) to prevent spontaneous polymerization. Avoid contact with oxidizers, acids, bases. Temperatures below 25°C (77°F) recommended for longer storage stability.
Packaging: Use compatible drums or bulk containers; avoid metals that may catalyze polymerization.
Incompatibles: Strong oxidizers, acids, alkalis, strong bases, strong reducing agents.
Occupational Exposure Limit: ACGIH TLV: 2 ppm TWA (skin); OSHA PEL: Not established
Engineering Controls: Local exhaust ventilation and general ventilation recommended to maintain chemical concentrations consistently below recommended limits.
Eye Protection: Wear chemical splash goggles or safety glasses with side shields.
Skin Protection: Nitrile or neoprene gloves, chemical-resistant clothing, long sleeves, and closed shoes minimize skin contact.
Respiratory Protection: Use OSHA/NIOSH-approved organic vapor cartridge respirators in case of high vapor concentrations or insufficient ventilation.
Hygiene Measures: Wash hands, forearms, and face thoroughly after handling and before eating, drinking, or smoking.
Appearance: Colorless to slightly yellow, clear liquid
Odor: Sweet, fruity, acrid odor
Odor Threshold: 0.006 ppm (reported sensitivity)
pH: Not applicable (does not dissolve in water)
Melting Point/ Freezing Point: -64°C (-83°F)
Boiling Point/ Range: 145-148°C (293–298°F)
Flash Point: 38°C (100°F) closed cup
Evaporation Rate: 0.07 (n-butyl acetate = 1)
Flammability: Flammable liquid
Explosion Limits: Lower 1.3%; Upper 8.0% (in air by volume)
Vapor Pressure: 3.7 mm Hg at 20°C
Vapor Density: 4.3 (air = 1)
Relative Density: 0.89–0.90 g/cm³
Water Solubility: 1.5 g/L at 20°C (slightly soluble)
Partition Coefficient (log Kow): 2.38
Auto-ignition Temperature: 285°C (545°F)
Decomposition Temperature: Not well defined; decomposes with heat, especially without inhibitor
Viscosity: 0.7 mPa·s at 20°C
Chemical Stability: Stable in presence of inhibitor under recommended storage conditions
Inhibitor: Typically stabilized with hydroquinone monomethyl ether
Polymerization: Can undergo rapid, exothermic polymerization if heated, dry, or contaminated by foreign materials; high risk if inhibitor depleted
Incompatible Materials: Strong oxidizers, strong acids, strong bases, reducing agents
Conditions to Avoid: Excessive heat, sources of ignition, direct sunlight, freezing, prolonged storage without proper ventilation or inhibitor
Hazardous Decomposition Products: Carbon monoxide, carbon dioxide, irritating acrid fumes.
Acute Toxicity: Oral LD50 (rat): 3,145 mg/kg; Dermal LD50 (rabbit): 3,875 mg/kg; Inhalation LC50 (rat, 4h): 2,740 ppm
Irritation: Causes skin, eye, and respiratory tract irritation
Sensitization: Prolonged exposure may cause allergic skin reaction in sensitive individuals.
Chronic Exposure: Prolonged inhalation may lead to nervous system effects, liver or kidney injury (animal studies). Skin exposure may cause dermatitis.
Mutagenicity/ Carcinogenicity: Not classified as carcinogenic; limited mutagenicity in some animal studies but not confirmed in humans.
Target Organs: Skin, eyes, respiratory system
Acute Aquatic Toxicity: Harmful to aquatic organisms. LC50 (fish, 96h): ~8 mg/L; EC50 (daphnia, 48h): 19 mg/L.
Persistence and Degradability: Biodegradable under aerobic conditions but can persist if spilled in large quantities.
Bioaccumulation: Low-moderate potential based on log Kow (2.38).
Mobility in Soil: Low adsorption to soil. Migrates through soil to contaminate water if released.
Other Adverse Effects: Not classified as ozone-depleting. Any spill into natural bodies of water can affect fish and invertebrates.
Disposal Methods: Must follow local, regional, national, and international regulations. Incinerate in permitted facility or send to authorized hazardous waste contractor. Do not dispose to drains, sewers, or surface waters.
Contaminated Packaging: Empty containers should be rinsed, punctured, and sent for disposal or recycling according to local guidelines.
Waste Codes: U162 (US EPA RCRA Hazardous Waste Code)
Special Precautions: Avoid release to the environment. Document disposal in waste manifests.
UN Number: UN2348
Proper Shipping Name: N-Butyl Acrylate, Stabilized
Hazard Class: 3 (Flammable liquid)
Packing Group: III
Labels Required: Flammable liquid (Class 3)
Marine Pollutant: No, but notify vessel captain if spilled
Special Transport Precautions: Transport only in well-sealed containers with visible hazard labels. Keep away from sources of heat and ignition, avoid rough handling, never ship without stabilizer.
Emergency Response Guide Number: 129
OSHA Hazard Communication (US): Classified as hazardous; requires labeling and SDS provision
TSCA Inventory (US): Listed
SARA Title III, Section 313: Subject to reporting (toxic chemical)
REACH Regulation (EU): Listed; Registration required
Canadian DSL: Listed
WHMIS Classification (Canada): Class B2 (Flammable liquids), Class D2B (Toxic material causing other toxic effects)
Other Regulations: Subject to precise transport and workplace regulations by local, state, and federal agencies.
