Butyl Acetate

Overview

Butyl Acetate (CAS No: 123-86-4), also known as n-Butyl Acetate, is a colorless, flammable liquid with a fruity odor. This organic compound, a member of the ester family, is a versatile solvent widely used in paints, coatings, and adhesive industries.

Butyl Acetate is miscible with most organic solvents but has limited solubility in water. Its slow evaporation rate and excellent solvent properties make it a preferred choice in the automotive and furniture industries. It is produced industrially via the esterification of acetic acid with n-butanol and is typically offered with a purity of ≥99.5%.

Applications

Butyl Acetate has a wide range of industrial and consumer applications:

Technical Specifications

Safety Information

Hazard Symbols and Statements

Flammable Eye and skin irritation Narcotic effects

Personal Protective Equipment (PPE)

• Chemical-resistant gloves (nitrile or neoprene)
• Chemical safety goggles or face shield
• Appropriate respiratory protection in high vapor concentrations
• Chemical-resistant apron or work clothing
• Closed-toe shoes or boots

Storage Conditions

• Store in a cool, well-ventilated area
• Keep away from oxidizers and strong acids/alkalis
• Store in stainless steel, glass, or suitable plastic (HDPE, PTFE) containers
• Label storage areas with "Flammable Liquid" signs
• Storage temperature: 15-25°C (protect from extreme heat)

Fire-Fighting Measures

• Suitable extinguishers: Dry chemical, CO₂, alcohol-resistant foam
• Avoid water jets, as they may spread the fire
• Actions should be performed by trained personnel with appropriate protective equipment
• Evacuate area and call firefighters for large fires

Handling and Storage

Handling

• Ensure containers are tightly sealed during transport
• Label as "Flammable Liquid"
• Use stainless steel tankers for bulk transport
• Avoid eating, drinking, or smoking during handling
• Ground equipment to prevent static electricity buildup

Storage

• Store in stainless steel, glass, or suitable plastic (HDPE, PTFE) containers
• Use explosion-proof electrical systems in storage areas
• Equip storage tanks with ventilation systems
• Keep fire-fighting equipment in storage areas
• Prohibit smoking in storage areas

Spill Response

• Eliminate all ignition sources
• Use appropriate respiratory protection and chemical-resistant clothing
• Absorb small spills with sand, vermiculite, or other absorbent materials
• Seek professional assistance for large spills
• Rinse spill area with plenty of water

Regulatory Information

GHS Classification

• Flammable Liquid Category 2
• Skin Irritation Category 2
• Eye Irritation Category 2A
• Specific Target Organ Toxicity (Single Exposure) Category 3

Key Regulations

• REACH: Registered
• CLP: Compliant
• FDA: Approved for food contact (limited use, 21 CFR 172.515)
• NFPA 704: Health 1, Flammability 3, Reactivity 0

International Regulations

• European Union: Subject to Directive 2008/58/EC
• USA: Listed on EPA TSCA inventory
• China: Listed on IECSC
• Japan: Listed on ISHL

Environmental Information

Environmental Impact

Butyl Acetate rapidly degrades in the atmosphere through photochemical reactions. When released into water sources, it exhibits moderate aquatic toxicity. It is biodegradable and does not persist in the environment.

Biodegradation

• Air: Photochemical reactions with a half-life of 2-5 days
• Water: Degrades via microbial activity within 5-20 days
• Soil: Moderate degradation via microbial activity

Waste Management

• Classified as hazardous waste
• Small quantities can be evaporated in licensed facilities
• Large quantities must be incinerated in licensed hazardous waste facilities
• Dispose in accordance with local regulations
• Do not dispose into sewer systems

Frequently Asked Questions

How is Butyl Acetate produced?

Butyl Acetate is primarily produced through the esterification of acetic acid with n-butanol, typically catalyzed by sulfuric acid. Continuous distillation processes are used in industrial-scale production.

What is the difference between Butyl Acetate and Ethyl Acetate?

Butyl Acetate (C₆H₁₂O₂) has a longer alkyl chain than Ethyl Acetate (C₄H₈O₂) and evaporates more slowly. Its higher boiling point provides a longer open time in paint formulations.

Does Butyl Acetate damage plastics?

Butyl Acetate can dissolve or damage polystyrene, PVC, and certain other plastics. Polyethylene and polypropylene are generally resistant, but prolonged exposure should be avoided.

What is the shelf life of Butyl Acetate?

When stored in tightly sealed containers, Butyl Acetate has a shelf life of approximately 2 years. It should be protected from moisture and kept tightly sealed.

What should I do if Butyl Acetate contacts my skin?

Wash thoroughly with soap and water. Prolonged contact may cause dryness or irritation. If irritation persists, seek medical attention. In case of eye contact, rinse with water for at least 15 minutes and consult a doctor.