Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Eastman Isophthalic Acid

Eastman Isophthalic Acid is a high-purity aromatic dicarboxylic acid from Eastman’s specialty chemical portfolio. It serves as a key monomer in unsaturated polyester resins, coatings, and PET copolymers—enhancing UV resistance, rigidity, and hydrolytic stability. Manufactured under strict quality control, it ensures consistent reactivity and low color formation for demanding industrial applications.
  • eastman isophthalic acid_e8302b11
  • eastman isophthalic acid_e8302b11

Features Of Eastman Isophthalic Acid

  1. High-purity isophthalic acid with low levels of colored impurities and metal contaminants.

  2. Consistent crystalline structure ensuring excellent solubility and reactivity in polyester synthesis.

  3. Superior thermal stability compared to terephthalic acid, enabling broader processing windows in resin production.

  4. Optimized particle size distribution for improved handling, dispersion, and blending efficiency in solid-state polymerization.

  5. Compliant with global regulatory requirements for industrial chemical use, including REACH and TSCA.

Typical Applications Of Eastman Isophthalic Acid

  1. Unsaturated polyester resins (UPRs) for marine, automotive, and construction composites.

  2. Curable coatings and high-performance gel coats requiring enhanced weather resistance and gloss retention.

  3. Specialty polyesters for flexible packaging films with improved clarity and barrier properties.

  4. Ion-exchange resins and functionalized polymers where aromatic ring substitution position enables tailored crosslinking density.

Specifications Of Eastman Isophthalic Acid

Chemical TypeAromatic dicarboxylic acid (1,3-benzenedicarboxylic acid)
Product FormWhite crystalline powder
AppearanceFree-flowing, odorless white crystals
Assay (by HPLC)≥ 99.5 wt%
Color (APHA)≤ 20
Moisture Content≤ 0.2 wt%
Residue on Ignition≤ 0.1 wt%
Primary ApplicationsUnsaturated polyester resins, specialty polyesters, high-performance coatings


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