Harmonized System
Section VI > Chapter 28 > Heading 2806 > 2806.20
Chlorosulphuric acid
Section VI > Chapter 28 > Heading 2807
Sulphuric acid; oleum.
Section VI > Chapter 28 > Heading 2807 > 2807.00
Sulphuric acid; oleum
Section VI > Chapter 28 > Heading 2808
Nitric acid; sulphonitric acids.
Section VI > Chapter 28 > Heading 2808 > 2808.00
Nitric acid; sulphonitric acids
Section VI > Chapter 28 > Heading 2809
Diphosphorus pentaoxide; phosphoric acid; polyphosphoric acids, whether or not chemically defined.
Section VI > Chapter 28 > Heading 2809 > 2809.10
Diphosphorus pentaoxide
Section VI > Chapter 28 > Heading 2809 > 2809.20
Phosphoric acid and polyphosphoric acids
Section VI > Chapter 28 > Heading 2810
Oxides of boron; boric acids.
Section VI > Chapter 28 > Heading 2810 > 2810.00
Oxides of boron; boric acids