Harmonized Tariff Schedule of the United States · HTS code · HS 2917.39
2917.39.08: Aromatic polycarboxylic acids, their anhydrides, halides: other, naphthalic anhydride
Other aromatic polycarboxylic acids
Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 2917 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:
- 2917.39 Other:
- 2917.39.08 Naphthalic anhydride
What you pay
Importing into USA
US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.
Additional duties and import rules
Charges on top of the customs duty, and rules the goods must meet at the border.
No additional measures recorded for this origin.
Same subheading in other tariffs
2917.39 Aromatic polycarboxylic acids, their anhydrides, halides: other
UK Free – 6% Third-country duty 10 tariff lines · average 5.4% 
EU Free – 6.5% Third-country duty 3 tariff lines · average 4.3% 
Türkiye Free – 6.5% Third-country duty 6 tariff lines · average 5.4% 
Canada Free General (MFN) 3 tariff lines 
Mexico Free – 35% General (MFN) 7 tariff lines · average 6% 
Brazil Free – 10.8% General (MFN) 8 tariff lines · average 3.4% 
Argentina Free – 10.8% General (MFN) 11 tariff lines · average 2.5% 
Peru Free General (MFN) 4 tariff lines 
New Zealand Free General (MFN) 1 tariff line 
Japan Free – 3.1% General (MFN) 4 tariff lines · average 1.6% 
Taiwan Free – 2.5% General (MFN) 4 tariff lines · average 1.8% 
GCC 5% General (MFN) 4 tariff lines 
Switzerland Free General (MFN) 1 tariff line 
Norway Free General (MFN) 2 tariff lines 
North Macedonia Free General (MFN) 3 tariff lines 
Nigeria 5% General (MFN) 1 tariff line USA lines: 2917.39
- 2917.39.041,2,4-Benzenetricarboxylic acid, 1,2-dianhydride (Trimellitic anhydride); Phthalic acid; and 4-Sulfo-1,8-naphthalic anhydride
- 2917.39.08Aromatic polycarboxylic acids, their anhydrides, halides: other, naphthalic anhydride
- 2917.39.12Aromatic polycarboxylic acids, their anhydrides, halides: other, 4,4'-(Hexafluoroisopropylidene)bis(phthalic anhydride)
- 2917.39.15Aromatic polycarboxylic acids, their anhydrides, halides: other, isophthalic acid
- 2917.39.17Aromatic polycarboxylic acids, their anhydrides, halides: other, tetrabromophthalic anhydride
- 2917.39.20Aromatic polycarboxylic acids, their anhydrides, halides: other, plasticizers
- 2917.39.30Products described in additional U.S. note 3 to section VI
- 2917.39.70Aromatic polycarboxylic acids, their anhydrides, halides: other
Binding rulings for similar goods
Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.
- N347708 U.S. CBP
The tariff classification of 3,3,4,4-Biphenyltetracarboxylic dianhydride, CAS No. 2420-87-3, imported in bulk form, from China
- N335082 U.S. CBP
The tariff classification of three chemical substances from China
- 600011703 HMRC
Pyromellitic dianhydride Benzene-1.2:4.5-tetracarboxylic dianhydride (cas rn 89-32-7)
Legal notes
In the Harmonized Tariff Schedule of the United States, 2917.39.08 is one of 8 lines under subheading 2917.39, aromatic polycarboxylic acids, their anhydrides, halides: other.
The general duty is free, and quantities are declared in kg.
For the same subheading, the UK duty is 0%–6%, the EU duty is 0%–6.5%, the Türkiye duty is 0%–6.5%, the Canada duty is free, the Mexico duty is 0%–35%, the Brazil duty is 0%–10.8%, the Argentina duty is 0%–10.8%, the Peru duty is free, the New Zealand duty is free, the Japan duty is 0%–3.1%, the Taiwan duty is 0%–2.5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is free and the Nigeria duty is 5%.
The United States imported goods of subheading 2917.39 worth US$305m in 2024; the largest supplier was China.
Questions and answers
What is the USA import duty for HTS code 2917.39.08?
The general duty in the Harmonized Tariff Schedule of the United States is free; the supplementary unit is kg. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.
Where does the United States import these goods from?
For subheading 2917.39 as a whole, the largest supplier in 2024 was China (US$65m), followed by India.