Key facts
- HS code
- 2510.10
- Covers
- Unground
- Edition
- HS2022
- Duty in the United States
- See its 1 line
Summary
HS code 2510.10 covers unground. It sits in heading 25.10 (natural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalk) in chapter 25 (salt; sulphur; earths and stone; plastering materials, lime and cement). Other goods of heading 25.10 are classified under 2510.20 (ground). National tariff lines under 2510.10 are live on border.bot for the United States (1 line, also used by 1 other country).
What this code covers
HS code 2510.10 covers unground.
The legal text of the subheading is “Unground”, in HS2022.
What it doesn’t cover
Other goods of heading 25.10 are classified under 2510.20 (ground).
- 2510.20Ground
How it is structured
2510.10 is a six-digit subheading. Its first two digits, 25, are the chapter; the first four, 2510, are heading 25.10; the last two, 10, identify the subheading within the heading.
Countries add their own digits after these six for their national tariff lines.
- Subheading 2510.10
- Unground
In other countries
National tariff lines under 2510.10 are live on border.bot for the United States (1 line, also used by 1 other country).
- United States1 line, used by 1 other country
Frequently asked questions
What does HS code 2510.10 cover?
HS code 2510.10 covers unground.
Which heading and chapter is HS code 2510.10 in?
HS code 2510.10 is in heading 25.10 (natural calcium phosphates, natural aluminium calcium phosphates and phosphatic chalk) in chapter 25 (salt; sulphur; earths and stone; plastering materials, lime and cement).
Where are goods of heading 25.10 classified when 2510.10 doesn’t fit?
Other goods of heading 25.10 are classified under 2510.20 (ground).
Which countries’ tariffs list national lines under HS code 2510.10?
National tariff lines under 2510.10 are live on border.bot for the United States (1 line, also used by 1 other country).
Sources and updates
The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.
This page was last updated on 11 October 2026.
Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.