Section V — Mineral products
Chapter 25 — Salt; sulfur; earths and stone; plastering materials, lime and cement
Heading 2528 — 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 % of H3BO3 calculated on the dry weight.
Subheading 2528.00 — 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 % of H3BO3 calculated on the dry weight.
HS code
2528.00.90 Other
Last Verified Date - 1 October 2026
Common commodities
Colemanite calcium borate crystalsUlexite magnesium borate mineralNatural crude boric acid below 85% H3BO3Boric oxide concentrate (non-sodium-based)Calcium sodium borate compoundMineral deposit rich in natural boratesDried crude boric acid with less than 85% H3BO3Naturally occurring non-sodium borate crystalsBoric oxide concentrate from Colemanite depositLow-concentration H3BO3 mineral