Harmonized System
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
Section VI > Chapter 28 > Heading 2841 > 2841.80
Tungstates (wolframates)
Section VI > Chapter 28 > Heading 2842
Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides.
Section VI > Chapter 28 > Heading 2842 > 2842.10
Double or complex silicates, including aluminosilicates whether or not chemically defined