Isophthalic Acid (99% purity)
Isophthalic acid is a meta-isomer of benzene-1,3-dicarboxylic acid, a chemically defined aromatic polycarboxylic acid used primarily in resin production. It falls under HTS 2917.39.1500 as a separate aromatic polycarboxylic acid, specifically isophthalic acid, meeting Chapter 29 note (a). Typically supplied as white crystalline powder for industrial synthesis.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing impurities exceeding 1%
Products with impurities not meeting 'separate chemically defined' criteria under Chapter 29 note (a) classify as other aromatic acids.
If supplied as aqueous solution for transport
Solutions beyond Chapter 29 note (d) 'dissolved in water' scope classify as chemical preparations.
If dimethyl isophthalate ester form
Esters classified with parent acid per Chapter 29 note on esters, but specific subheading may apply.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Verify purity certificate (min 99%) as required for chemical classification under Chapter 29 note (a)
• Include Safety Data Sheet (SDS) and REACH compliance docs for EU-origin material
• Avoid misclassification as terephthalic acid (2917.36) - confirm meta-isomer via HPLC analysis
Related Products under HTS 2917.39.15.00
Industrial Grade Isophthalic Acid
Technical grade isophthalic acid (IPA) for PET resin copolymer production and unsaturated polyester resins. Classified under 2917.39.1500 as pure isophthalic acid per Chapter 29 definitions. Supplied in 25kg bags or 1MT supersacks for chemical manufacturing.
Purified Isophthalic Acid (PIA)
High-purity isophthalic acid (>99.8%) produced via cyclohexane oxidation process, used in high-performance coatings and specialty polyesters. Meets HTS 2917.39.1500 criteria as chemically defined aromatic dicarboxylic acid. Essential comonomer for PET bottle resins.
Isophthalic Acid Flakes
Isophthalic acid processed into uniform flakes for improved handling and dissolution in polyester reactors. Still classified as pure isophthalic acid under 2917.39.1500 since physical form doesn't affect chemical classification. Used in coil coatings and gelcoats.
Isophthalic Acid for Unsaturated Polyester Resins
Specialty grade isophthalic acid formulated for corrosion-resistant unsaturated polyester resins used in fiberglass reinforced plastics. Pure chemical compound classification under HTS 2917.39.1500 per Chapter 29 note (a). Key for chemical storage tanks and pipes.
Phthalic Isophthalic Anhydride Precursor
Isophthalic acid serving as precursor for mixed phthalic-isophthalic anhydride in alkyd resin production. Classified specifically as isophthalic acid under 2917.39.1500 before anhydride formation. Used in industrial paints and varnishes.
Isophthalic Acid with Stabilizer
Isophthalic acid containing minimal oxidation stabilizer for transport stability, permitted under Chapter 29 note (f). Still classified as isophthalic acid HTS 2917.39.1500 when stabilizer is solely for preservation. For long-distance chemical shipments.