Harmonized System
Section VI > Chapter 28 > Heading 2840 > 2840.1
Disodium tetraborate (refined borax)
Section VI > Chapter 28 > Heading 2840 > 2840.20
Other borates
Section VI > Chapter 28 > Heading 2840 > 2840.30
Peroxoborates (perborates)
Section VI > Chapter 28 > Heading 2841
Salts of oxometallic or peroxometallic acids.
Section VI > Chapter 28 > Heading 2841 > 2841.6
Manganites, manganates and permanganates
Section VI > Chapter 28 > Heading 2841 > 2841.30
Sodium dichromate
Section VI > Chapter 28 > Heading 2841 > 2841.50
Other chromates and dichromates; peroxochromates
Section VI > Chapter 28 > Heading 2841 > 2841.6 > 2841.61
Potassium permanganate