# HTS 2521: Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement

https://geopax.app/tariffs/catalog/25/2521

Source: [2026 HTS Revision 21 (October 9, 2026)](https://hts.usitc.gov/search?query=2521). Additional duties by country of origin may apply; estimate a shipment's full duty with the tariff calculator: https://geopax.app/tariffs/calculator

## 2521: Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement

| Code | Description | General | Special | Column 2 | Units |
| --- | --- | --- | --- | --- | --- |
| 2521.00.00.00 | Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement | Free |  | Free | t |