Butyl Acetate

Product information:

Butyl Acetate (N-Butyl Acetate, BAC)

Butyl acetate, also known as n-Butyl Acetate (BAC), is an organic compound with the chemical formula CH₃COOCH₂CH₂CH₂CH₃. This substance is widely used as a solvent in the paint manufacturing industry and other applications. It has a distinctive fruity aroma similar to ripe bananas, which is why it is commonly referred to in the market as “aromatic gasoline”.

Butyl acetate is also used as a synthetic fruit flavoring in food products such as candies, ice creams, and packaged foods. Additionally, it occurs naturally in various fruits. It is a colorless, flammable liquid with a characteristic banana-like scent. Other isomers of butyl acetate include isobutyl acetate, tert-butyl acetate, and sec-butyl acetate.

Description and Properties of Butyl Acetate (N-Butyl Acetate)

Butyl acetate (abbreviated as N-BAC, BAC) is a colorless, transparent liquid with a moderate evaporation rate and an ester-like odor.

• It is soluble in most organic solvents, including alcohols, ketones, aldehydes, ethers, glycol ethers, and aliphatic hydrocarbons. However, it has limited solubility in water.
• It can dissolve cellulose nitrate, polymers, resins, and oils, making it an essential solvent in industries such as paint manufacturing, leather industry, paper production, and chemicals.

Chemical Formula of Butyl Acetate

• Molecular Formula: C₆H₁₂O₂
• CAS Number: 123-86-4

Physical Properties of Butyl Acetate (C₆H₁₂O₂)

Applications of Butyl Acetate (C₆H₁₂O₂)

• Paint Solvent:
  • N-Butyl Acetate is an essential solvent in the paint industry.
  • It effectively dissolves nitrocellulose, resins, polymers, oils, and fats.
  • Its evaporation rate is suitable for drying processes, preventing cloudiness on paint surfaces and ensuring a smooth, glossy finish.
• Ink and Coating Applications:
  • Used in combination with n-Butanol to enhance anti-blushing properties and improve solubility.
  • Reduces paint viscosity, improving application and drying.
  • Should not be used in paints containing free OH groups, such as urethane coatings.
• Pharmaceutical Industry:
  • Used as an extraction solvent in drug formulation.
  • Found in cleaning agents and fragrance formulations.
  • Has low water absorption, hydrolysis resistance, and good solubility properties.

Production of Butyl Acetate (N-Butyl Acetate)

The production process of Butyl Acetate typically involves the esterification of butanol isomers with acetic acid, using sulfuric acid as a catalyst.

Production Steps:

1. Reacting Butanol with Acetic Acid in an esterification reactor, with sulfuric acid as a catalyst. The reaction occurs at 120°C, removing water as a byproduct.
2. Neutralization of the crude ester product before further processing.
3. Distillation to separate components and refine the product.
4. Condensation, water removal, and recovery of esters, followed by final distillation at 126°C to obtain purified Butyl Acetate.

Storage and Handling of Butyl Acetate (C₆H₁₂O₂)

To ensure safety and maintain product stability, follow these storage guidelines:

• Temperature Control: Store at an appropriate temperature range (15-30°C / 59-86°F). Avoid extreme heat or cold, which may degrade quality.
• Avoid Direct Sunlight: Exposure to UV rays may cause decomposition or unwanted chemical reactions.
• Seal Containers Properly: Keep containers tightly closed after use to prevent contact with air and moisture, maintaining the product’s stability.
• Prevent Air Exposure: Minimize exposure to air, as this can increase flammability risks.
• Keep Away from Open Flames and High Heat: Butyl Acetate is highly flammable.
• Store in a Well-Ventilated Area: Ensure proper ventilation to prevent the accumulation of Butyl Acetate vapors.
• Handle with Care: Avoid shaking or dropping containers to prevent spills or damage.