# HTS 2528.00.00: Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 percent of H3BO3 calculated on the dry weight

> Plain-language tariff reference from the USITC Harmonized Tariff Schedule on [PlainTariff](https://plaintariff.com/).

## Duty rates

- **General (MFN) rate:** Free
- **Column 2 rate:** Free
- **Corpus rank:** #678 of 5979 among duty-free tariff lines

## Classification path

- **Section V:** [Mineral Products](https://plaintariff.com/section/v-mineral-products)
- **Chapter 25:** [Salt; sulphur; earths and stone; plastering materials, lime and cement](https://plaintariff.com/chapter/chapter-25-salt-sulphur-earths-and-stone-plastering-materials-lime-and)
- **HTS code:** 2528.00.00

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- [Methodology & sources](https://plaintariff.com/methodology)

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*Source: U.S. International Trade Commission Harmonized Tariff Schedule. HTML canonical: https://plaintariff.com/heading/25280000-natural-borates-and-concentrates-thereof-whether-or-not-cal*