Isopropyl Acetate: A Versatile Solvent for Industrial and Commercial
Isopropyl acetate (IPAc) is a clear, flammable liquid with a characteristic fruity odor, widely used as a solvent across various industries. Known for its excellent solvency, fast evaporation rate, and relatively low toxicity, it is a preferred choice in applications ranging from coatings and inks to pharmaceuticals and fragrances.
Chemical Profile
Chemical Formula: C₅H₁₀O₂
CAS Number: 108-21-4
Molecular Weight: 102.13 g/mol
Boiling Point: ~89°C
Flash Point: ~2°C (closed cup)
How Isopropyl Acetate is Produced
Isopropyl acetate is typically produced through the esterification of isopropanol with acetic acid in the presence of a catalyst. The process is well-established and scalable for industrial production.
Key Applications
1. Solvent for Coatings and Paints
Due to its fast evaporation and excellent solvency, isopropyl acetate is used in:
Automotive refinishing
Industrial wood coatings
Marine and metal finishes
2. Printing Inks
In flexographic and gravure printing, especially for packaging materials, isopropyl acetate is valued for its ability to dissolve resins and provide smooth, even print quality.
3. Pharmaceuticals and Cosmetics
Used as a solvent in topical formulations and perfumes, it helps in delivering active ingredients and enhancing fragrance longevity.
4. Electronics
IPA is used in cleaning applications within the electronics industry, thanks to its volatility and low residue.
5. Laboratory Use
It serves as a solvent or reagent in organic synthesis and sample preparation.
Advantages of Isopropyl Acetate
Fast evaporation rate: Speeds up drying times in coatings and inks.
Moderate solvency: Compatible with many resins and polymers.
Low odor and low toxicity: Safer than some alternative solvents.
Ester functionality: Enhances compatibility in formulations requiring polar and non-polar components.