Harmonized Tariff Schedule of the United States · HTS code · HS 2510.20
2510.20.00: Natural calcium phosphates, natural aluminum calcium: ground
Ground natural phosphates
Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026
- 2510 Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk:
- 2510.20.00 Ground
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.
Additional duties and charges 1
- Additional dutySection 301 — China — technology transfer, IP and innovation (2018 actions and 2024 four-year review) 25%
- Applies to goods from
- China
- In force
- from 24 September 2018
- Legal act
- HTSUS 9903.88.03
Same subheading in other tariffs
2510.20 Natural calcium phosphates, natural aluminium calcium: ground
UK Free Third-country duty 1 tariff line 
EU Free Third-country duty 1 tariff line 
Türkiye Free Third-country duty 3 tariff lines 
Canada Free Third-country duty 1 tariff line 
Mexico Free Third-country duty 2 tariff lines 
Brazil Free Third-country duty 2 tariff lines 
Argentina Free Third-country duty 3 tariff lines 
Peru Free Third-country duty 1 tariff line 
New Zealand Free Third-country duty 1 tariff line 
Japan Free Third-country duty 1 tariff line 
Taiwan Free Third-country duty 1 tariff line 
GCC 5% Third-country duty 3 tariff lines 
Switzerland Free Third-country duty 1 tariff line 
Norway Free Third-country duty 1 tariff line 
North Macedonia Free Third-country duty 1 tariff line 
Nigeria 5% Third-country duty 1 tariff line 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.
- 600012360 HMRC
Calcium Phosphate Hydroxyapatite Physical form: a powder Uses: production of fine bone china ceramic tableware in conjunction with kaolin and feldspar. It is additionally used as a powder coating for moulds when casting aluminium or copper to prevent the molten metal from sticking to the mould…
Legal notes
HTS code 2510.20.00 is a line of the Harmonized Tariff Schedule of the United States under HS subheading 2510.20 (natural calcium phosphates, natural aluminium calcium: ground).
The general duty is free, and quantities are declared in t.
For the same subheading, the UK duty is free, the EU duty is free, the Türkiye duty is free, the Canada duty is free, the Mexico duty is free, the Brazil duty is free, the Argentina duty is free, the Peru duty is free, the New Zealand duty is free, the Japan duty is free, the Taiwan duty is free, 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 2510.20 worth US$796k in 2024.
Questions and answers
What is the USA import duty for HTS code 2510.20.00?
The general duty in the Harmonized Tariff Schedule of the United States is free; the supplementary unit is t. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.