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 H<SUB>3</SUB>BO<SUB>3</SUB> calculated on the dry weight

Chapter 25 · 1 CN codes

• 2528 00 00 00 Borates, natural, and concentrates thereof, whether or not calcined, and natural boric acids containing <= 85% of H3BO3 calculated on the dry weight (excl. borates separated from natural brine)