2510Natural calcium phosphates
HTS Code 2510 covers any article best defined as Mineral ProductsSalt; sulfur; earths and stone; plastering materials, lime and cementNatural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk: in the Harmonized Tariff Schedule — covering 2 sub-classifications.
Get Tariff News Alerts
Every new US tariff action and AD/CVD notice in plain English, as it happens or weekly. Free.
Know the moment a tariff update hits 2510
Add it, with your country of origin, to Duty Guard, free for 7 days. It flags duty you may have overpaid on your entries, and when a new tariff action affects it, you hear about it first, with exactly what changes.
- Every entry audited for duty you may have overpaid
- Every new US tariff action checked against your imports, every hour
- An alert with the rate before and after, by email, Slack or Teams
- AD/CVD alerts when an import may fall under a case
New tariff action affects 1 of your imports
If a new 10% tariff were added
Relevant HTS Notes
Official USITC notes that may affect classification under HTS 2510.
Search CROSS Rulings for HTS 2510
See how Customs classified similar products. CBP's CROSS database holds the classification rulings that cite 2510.
Opens rulings.cbp.gov in a new tab.
What does HTS code 2510 cover?
HTS code 2510 covers natural calcium phosphates (Natural calcium phosphates, natural aluminum calcium phosphates and phosphatic chalk:), classified under Chapter 25 (Salt; sulfur; earths and stone; plastering materials, lime and cement) in the US Harmonized Tariff Schedule. There are 2 more specific sub-classifications under this code.
Primary Sources
The official documents behind the rates and tariffs on this page. Duties are worked out from them; check the legal text before you file.