N-butyl Acetate also known as butyl acetate or n-butyl ethanoate, is a clear, colorless liquid with a characteristic fruity odor. This versatile ester solvent (molecular formula C₆H₁₂O₂, molecular weight 116.16 g/mol) is widely recognized for its excellent solvency power, moderate evaporation rate, and balanced performance in industrial applications.

Primary Applications and Uses N-Butyl Acetate

It serves as a high-performance solvent across multiple industries:

  • Coatings and Paints: Essential in automotive OEM and refinish coatings, industrial paints, wood lacquers, and architectural coatings. It balances evaporation rates in 2K polyurethane systems and nitrocellulose formulations.
  • Printing Inks: Used in flexographic, gravure, and screen printing inks for excellent solvency and fast drying.
  • Adhesives and Sealants: Improves viscosity control and open time.
  • Flavor and Fragrance: Approved as a food-grade flavoring agent (FEMA 2174) imparting fruity notes in beverages, candies, and baked goods (in regulated low concentrations).
  • Extraction and Other: Acts as an extraction solvent in pharmaceutical and chemical processing, and as a laboratory reagent.
  • Nail Polish and Cosmetics: Provides smooth application and quick drying in certain formulations.

Its low toxicity profile relative to other solvents and pleasant odor make it a preferred choice for high-quality surface coatings and consumer products.

Benefits

  • Excellent solvency for resins, polymers, oils, and fats.
  • Moderate evaporation rate that prevents defects like blushing or cracking.
  • Enhances gloss, leveling, and brushability in coatings.
  • Compatible with many other solvents for custom blends.
  • Cost-effective and readily biodegradable under proper conditions.

Handling, Storage, and Safety

It is a flammable liquid (Category 3). Store in a cool, well-ventilated area away from heat, sparks, and open flames. Use proper personal protective equipment (PPE) including gloves, goggles, and respiratory protection when handling in poorly ventilated spaces. It may cause drowsiness or dizziness upon inhalation and can cause skin dryness with repeated exposure. Always refer to the latest Safety Data Sheet (SDS) for detailed hazard information, exposure limits (OSHA PEL: 150 ppm TWA), and first-aid measures.

Product is available in various packaging sizes — from drums to bulk tankers. Custom specifications and certifications (including technical, food, or high-purity grades) can be provided upon request.

Frequently Asked Questions (FAQs)

What is it used for?

It is primarily used as a solvent in paints, coatings, printing inks, adhesives, and as a flavoring agent in the food industry.

Is it the same as Butyl Acetate?

Yes. It is the common name for the n-isomer of butyl acetate (CAS 123-86-4).

What is the evaporation rate of N-Butyl Acetate?

It has a moderate evaporation rate (approximately 1.0 relative to n-butyl acetate standard), making it suitable for balanced drying in coatings.

Is N-Butyl Acetate flammable?

Yes, it is a flammable liquid. Handle with care, keep away from ignition sources, and store in approved containers.

Can it be used in food applications?

Yes, in very low concentrations as a flavoring agent per regulatory approvals (e.g., FEMA GRAS status). It is not intended for direct consumption in pure form.

How should N-Butyl Acetate be stored?

Store in a cool, dry, well-ventilated place in tightly sealed containers, protected from light and heat. Shelf life is typically 24 months or longer under proper conditions.

What is the difference between n-Butyl Acetate and other butyl acetates?

N-Butyl Acetate refers specifically to the straight-chain (normal) isomer, which offers the most common solvency profile compared to isobutyl or tert-butyl variants.

Is it environmentally friendly?

It is VOC (volatile organic compound) and should be handled according to local environmental regulations. It shows good biodegradability but requires proper disposal.

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