Section 06 Products of the chemical or allied 29 Organic chemicals 29 22 Oxygen-function amino-compounds 29 22 21 Aminohydroxynaphthalenesulphonic acids and their salts 29 22 21 00 Aminohydroxynaphthalenesulphonic acids and their salts Commodity Code Description 29 22 21 00 000 Aminohydroxynaphthalenesulphonic acids and their salts
