Terephthalic acid and its salts
Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. > Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives: > Terephthalic acid and its salts > Terephthalic acid and its salts
Duty Rate (from China)
Products classified under Tariff item 2917.36.00
Ammonium Terephthalate
Ammonium terephthalate is the ammonium salt of terephthalic acid, an aromatic polycarboxylic acid. It is used as a blowing agent in plastics and as a chemical intermediate. Under Chapter 29, inorganic salts of organic acids are classified with the parent organic compound, which is terephthalic acid.
Calcium Terephthalate Salt
Calcium terephthalate is a divalent salt of terephthalic acid, used in flame-retardant plastics and as a catalyst. As an inorganic salt of an organic acid, it is classified with terephthalic acid under Chapter 29, note 5(C)(1).
Disodium Terephthalate Salt
Disodium terephthalate is the sodium salt of terephthalic acid, used in specialty polymers and as a chemical intermediate. It is explicitly covered by tariff item 2917.36.00, which includes salts of terephthalic acid.
High-Purity Terephthalic Acid (HPTA)
High-purity terephthalic acid (HPTA) is a chemically defined aromatic polycarboxylic acid with purity above 99.99%. It is used for pharmaceutical-grade PET and specialty films. It falls directly under tariff item 2917.36.00 as terephthalic acid.
Industrial Grade Terephthalic Acid
Industrial grade terephthalic acid is a separate chemically defined compound with typical purity of 99.5%, used as feedstock for polyester fiber production. It is classified under tariff item 2917.36.00 as terephthalic acid, regardless of purity.
Monopotassium Terephthalate
Monopotassium terephthalate is a partially neutralized salt of terephthalic acid, used in niche chemical syntheses and polymer modifiers. As a salt of terephthalic acid, it is covered by tariff item 2917.36.00.
Purified Terephthalic Acid (PTA)
Purified terephthalic acid (PTA) is a chemically defined organic compound used primarily as a raw material for producing polyethylene terephthalate (PET) for bottles and fibers. It falls under tariff item 2917.36.00 as terephthalic acid.
Terephthalic Acid Aqueous Solution
Terephthalic acid aqueous solution is a dilute solution of terephthalic acid in water, used for lab or small-scale polymer applications. Chapter 29 note 1(d) allows products of the heading dissolved in water to be classified under the same heading.
Terephthalic Acid Flakes
Terephthalic acid flakes are terephthalic acid processed into a flake form for easier handling in polyester plants. The physical form does not change its chemical identity, so it remains classified under tariff item 2917.36.00.
Terephthalic Acid with Stabilizer
Terephthalic acid with stabilizer contains a minimal amount of stabilizer added for transport stability, used in PET resin manufacturing. Chapter 29 note 1(f) permits such additions when necessary for preservation or transport, so it falls under tariff item 2917.36.00.