If you work with coatings, inks, or adhesives, you've likely come across methyl acetate (CAS 79-20-9). This colorless liquid with a pleasant, fruity odor is more than just another solvent — it's a versatile workhorse in modern manufacturing.

What Is Methyl Acetate?

Methyl acetate is an aliphatic ester formed by the condensation of acetic acid with methanol. With the chemical formula C₃H₆O₂ and a molecular weight of 74.1, it's a volatile organic compound (VOC) that boils at just 57–58°C. Its low boiling point and fast evaporation rate make it invaluable across multiple industries.

Key Applications

Coatings and Inks

Methyl acetate is a fast-evaporating, mild-odor active solvent that works with a broad range of resins — including cellulose acetate butyrate, nitrocellulose, acrylics, epoxies, and polyesters. It's widely used in aerosol coatings, architectural coatings, automotive refinish, and commercial printing inks.

Adhesives and Cleaners

You'll also find it in glues, adhesives, sealants, and nail polish removers. Because it's readily biodegradable and VOC-exempt under federal law, it's a popular choice for developing environmentally friendly formulations.

Chemical Intermediate

Beyond solvents, methyl acetate serves as a chemical intermediate in producing acetic anhydride, methyl acrylate, and vinyl acetate. It's also used in biodiesel preparation as an acyl acceptor and in the synthesis of ethanol.

How to Choose the Right Methyl Acetate

Not all methyl acetate is created equal. Selecting the right grade for your application comes down to understanding a few critical quality parameters:

1. Purity (Assay)

Industrial/Regular Grade: 96% minimum — suitable for general-purpose coatings, adhesives, and cleaning

High Purity Grade: 99.5% minimum — ideal for sensitive applications like pharmaceutical synthesis, electronics cleaning, and premium clear coatings

Premium Grade: 99.9% and above — for the most demanding applications

2. Water Content

Water is a hidden enemy in many formulations. For moisture-sensitive systems like polyurethane, water can trigger unwanted side reactions. High-purity grades typically offer water content below 0.05% (500 ppm), while industrial grades may allow up to 1.5%. For critical applications, look for water content ≤ 0.05%.

3. Acidity (Free Acid)

Low acidity minimizes equipment corrosion and prevents degradation of sensitive compounds. High-purity grades typically limit acidity (as acetic acid) to 0.05% max.

4. Non-Volatile Residue

For coatings and cleaning applications, low residue ensures a clean evaporation with no deposits left behind — preventing fish-eyes, craters, haze, and reduced gloss in finished surfaces. Look for residue ≤ 0.01%.

5. Color (APHA)

Clear, water-white material indicates minimal contamination. High color can carry through to light-colored and transparent topcoats. Most quality grades maintain color ≤ 5.

Quick Selection Guide

Application Recommended Grade Key Specs

General coatings, adhesives Industrial (96%+) Water ≤ 1.5%, Methanol ≤ 2.5%

High-quality coatings, cosmetics Cosmetic (98%+) Water ≤ 0.75%, Methanol ≤ 0.95%

Electronics, pharmaceuticals, premium coatings High Purity (99.5%+) Water ≤ 0.05%, Methanol ≤ 0.10%

Analytical/HPLC work HPLC Grade (99.5%+) Ultra-low impurities

Safety Considerations

Methyl acetate is highly flammable (flash point: 14°F / -10°C) and requires careful handling. Key hazards include:

Causes serious eye irritation

May cause drowsiness or dizziness

Repeated exposure may dry skin

Always use explosion-proof equipment, keep away from ignition sources, and avoid breathing vapors. NIOSH recommends a TWA exposure limit of 200 ppm (610 mg/m³).

Why Choose Desun Chemical for Methyl Acetate?

When sourcing methyl acetate, working with a reliable supplier makes all the difference. Deshang Chemical has established itself as a trusted name in the chemical distribution industry. With a comprehensive portfolio that includes solvents, acrylic esters, resins, and additives, Deshang Chemical offers:

Quality assurance — Products meeting rigorous enterprise and national standards

Industry expertise — Deep understanding of coatings, adhesives, and ink applications

Reliable supply — Consistent product quality backed by professional logistics

Technical support — Assistance with formulation and application challenges

Whether you need industrial-grade methyl acetate for general coatings or high-purity material for sensitive applications, Desun Chemical provides the quality and service that formulators trust.