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Harmonized System
Section VI > Chapter 28 > Heading 2836 > 2836.20
Disodium carbonate
Section VI > Chapter 28 > Heading 2836 > 2836.30
Sodium hydrogencarbonate (sodium bicarbonate)
Section VI > Chapter 28 > Heading 2836 > 2836.40
Potassium carbonates
Section VI > Chapter 28 > Heading 2836 > 2836.50
Calcium carbonate
Section VI > Chapter 28 > Heading 2836 > 2836.60
Barium carbonate
Section VI > Chapter 28 > Heading 2836 > 2836.9 > 2836.91
Lithium carbonates
Section VI > Chapter 28 > Heading 2836 > 2836.9 > 2836.92
Strontium carbonate
Section VI > Chapter 28 > Heading 2837
Cyanides, cyanide oxides and complex cyanides.
Section VI > Chapter 28 > Heading 2837 > 2837.1
Cyanides and cyanide oxides