2917.36.00.00
Terephthalic acid and its salts
Classification path
- Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
- Aromatic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and their derivatives
- Terephthalic acid and its salts
Rates of duty
- General (MFN)
- 6.5%
- Column 2Cuba, North Korea, Russia, Belarus
- 15.4¢/kg + 57%
- Unit of quantity
- kg
Trade agreement rates
Related lines in heading 2917
- 2917.11.00.00Oxalic acid, its salts and esters3.1%
- 2917.12.10.00Adipic acid, its salts and esters / Adipic acid6.5%
- 2917.12.20.00Adipic acid, its salts and esters / Plasticizers6.5%
- 2917.12.50.00Adipic acid, its salts and esters / Other6.5%
- 2917.13.00.30Azelaic acid, sebacic acid, their salts and esters / Sebacic acid4.8%
- 2917.13.00.90Azelaic acid, sebacic acid, their salts and esters / Other4.8%
- 2917.14.10.00Derived in whole or in part from benzene or other aromatic hydrocarbons6.5%
- 2917.14.50.00Maleic anhydride / Other4.2%
- 2917.19.10.00Ferrous fumarate6.5%
- 2917.19.15.00Derived in whole or in part from aromatic hydrocarbons6.5%
- 2917.19.17.00Fumaric acid / Other4.2%
- 2917.19.20.00Products described in additional U.S. note 3 to section VI6.5%
About heading 2917
Polycarboxylic acids, their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulfonated, nitrated or nitrosated derivatives
Heading 2917 covers polycarboxylic acids, meaning acids with two or more carboxyl groups, plus their anhydrides, halides, peroxides, peroxyacids and halogenated, sulfonated, nitrated or nitrosated derivatives. The heading splits first by structure: acyclic compounds in 2917.11 through 2917.19, cyclic non-aromatic compounds in 2917.20, and aromatic compounds in 2917.32 through 2917.39. Within each group the lines move from specific named chemicals to residual Other lines, with separate breakout lines for plasticizers.
Full guide to heading 2917Products in this heading
- Oxalic acid and its salts and esters
- Adipic acid and adipate esters used as plasticizers
- Maleic anhydride
- Phthalic anhydride
- Terephthalic acid and dimethyl terephthalate
- Dioctyl orthophthalate (a common PVC plasticizer)
- Isophthalic acid
- Trimellitic anhydride
Frequently asked questions
What is the HTS code for maleic anhydride?
Maleic anhydride derived in whole or in part from benzene or other aromatic hydrocarbons is 2917.14.10.00 at a general (MFN) rate of 6.5%. Other maleic anhydride is 2917.14.50.00 at a general (MFN) rate of 4.2%.
What is the duty on phthalic anhydride?
Phthalic anhydride is classified under 2917.35.00.00, with a general (MFN) rate of 6.5%.
How do I classify an adipate ester used as a plasticizer?
Adipic acid ester plasticizers fall under 2917.12.20.00 at a general (MFN) rate of 6.5%. If the adipate ester is not a plasticizer, it goes on the residual line 2917.12.50.00, also at 6.5%.
Source: USITC Harmonized Tariff Schedule, retrieved October 22, 2026.