Purified Isophthalic Acid

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Purified Isophthalic Acid – Key Intermediate for High-Performance Polymers

Purified Isophthalic Acid

Purified Isophthalic Acid (PIA) is a high-purity aromatic dicarboxylic acid primarily used in the production of polyethylene terephthalate (PET) resins, coatings, and specialty polymers. Known for improving strength, clarity, and chemical resistance, it is a critical ingredient in a variety of industrial and consumer applications.

Chemical Specifications

Property Details
CAS Number 121-91-5
Grade Purified / Industrial
Molecular Formula C8H6O4
HSN Code 29173990
Purity > 99%
Molecular Weight 166.13 g/mol
Packing Bag / Drum
GST Tax Rate 18%

Technical Specifications

Property Unit Specification Results
Appearance - White crystalline powder White powder
Melting Point °C 345 - 350 348
Purity (by GC) % > 99.5 99.8
Moisture Content % < 0.3 0.2
Color (APHA) - < 15 10
Purified Isophthalic Acid Packaging

Features of Purified Isophthalic Acid

  • High Purity: Ideal for specialty polymers and PET resin production.
  • Enhanced Performance: Improves clarity, UV resistance, and durability.
  • Stable and Non-Volatile: Maintains integrity under high-temperature conditions.
  • Eco-Friendly: Used in recyclable and sustainable polymer systems.

Applications of Purified Isophthalic Acid

  1. PET Resins: Enhances strength and thermal resistance in packaging materials.
  2. Powder Coatings: Improves chemical resistance and flexibility.
  3. Unsaturated Polyester Resins: Used in fiberglass-reinforced plastics.
  4. High-Performance Polymers: Essential for specialty engineering plastics.
  5. Copolymer Production: Improves properties of co-polyester applications.

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