Purified Isophthalic Acid (PIA)

Purified Isophthalic Acid (PIA) is a high-purity aromatic dicarboxylic acid primarily used as an intermediate in the production of polymers and resins. It is known for enhancing thermal stability, clarity, chemical resistance, and mechanical strength in end products. PIA plays a critical role in manufacturing PET, polyester resins, coatings, specialty plastics, and fiber applications.

Applications

• Polyethylene terephthalate (PET) resin production

• Unsaturated polyester resins (UPR)

• High-performance coatings and paints

• Plasticizers and adhesives

• Fibers and specialty plastics

• PET bottles, packaging, and films

• Automotive and industrial coatings

Technical Details

• Chemical Formula: C8H6O4

• CAS Number: 121-91-5

• Appearance: White crystalline powder

• Purity: ≥ 99.8%

• Melting Point: 345°C

• Boiling Point: ≥ 300°C (decomposes)

• Solubility: Slightly soluble in water; soluble in hot alcohols

• Odor: Odorless

Packaging

• 25 kg bags

• 500 kg / 1000 kg jumbo bags

• Custom packing options available

Storage & Handling

Store in a dry, cool, and well-ventilated place. Keep bags sealed to prevent moisture absorption. Handle with protective gloves, goggles, and dust mask to avoid inhalation and skin contact. Follow good industrial hygiene practices during handling and storage.

HS Code

29173990

Request Quote / Technical Documents

Contact us to request TDS, SDS, COA, and pricing for Purified Isophthalic Acid (PIA).