Aminohydroxynaphthalenesulphonic acids and their salts
Oxygen-function amino-compounds. > Amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof: > Aminohydroxynaphthalenesulphonic acids and their salts > Aminohydroxynaphthalenesulphonic acids and their salts
Duty Rate (from China)
Products classified under Tariff item 2922.21.00.00
1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid
1-Amino-8-hydroxy-3,6-naphthalenedisulfonic acid is a separate chemically defined organic compound with amino, hydroxy, and sulfonic acid groups on a naphthalene ring. It is a diazo coupling component used in the synthesis of acid dyes, falling under tariff item 2922.21.00 as an aminohydroxynaphthalenesulphonic acid.
2922.21.004-Amino-3-hydroxy-1-naphthalenesulfonic acid
4-Amino-3-hydroxy-1-naphthalenesulfonic acid is a chemically defined aminohydroxynaphthalenesulphonic acid with amino, hydroxy, and sulfonic groups. It is used as a building block for direct and metal complex dyes, and falls under tariff item 2922.21.00.
2922.21.006-Amino-1-naphthol-3-sulfonic acid (J Acid)
6-Amino-1-naphthol-3-sulfonic acid (J Acid) is an aminohydroxynaphthalenesulphonic acid used as an intermediate for direct and reactive dyes. It is a separate chemically defined compound, falling under tariff item 2922.21.00.
2922.21.008-Amino-1-naphthol-5-sulfonic acid (Schaeffer's acid)
8-Amino-1-naphthol-5-sulfonic acid (Schaeffer's acid) is an aminohydroxynaphthalenesulphonic acid used as a dye intermediate for acid wool and reactive dyes. It is a separate chemically defined compound, classified under tariff item 2922.21.00.
2922.21.00CAS 117-94-2 1-Amino-8-Naphthol-4,6-Disulfonic Acid Monosodium Salt
CAS 117-94-2 is the monosodium salt of 1-amino-8-hydroxy-4,6-naphthalenedisulfonic acid, a separate chemically defined compound. It is an aminohydroxynaphthalenesulphonic acid salt, classified under tariff item 2922.21.00.
2922.21.00Chicago Acid (4-Amino-5-hydroxy-1,3-naphthalenedisulfonic acid)
Chicago Acid (4-amino-5-hydroxy-1,3-naphthalenedisulfonic acid) is a separate chemically defined compound with amino, hydroxy, and two sulfonic acid groups. It is an intermediate for reactive dyes and azo pigments, classified under tariff item 2922.21.00.
2922.21.00Chicago Acid Sodium Salt
Chicago Acid Sodium Salt is the sodium salt of 4-amino-5-hydroxy-1,3-naphthalenedisulfonic acid. As a salt of an aminohydroxynaphthalenesulphonic acid, it is classified under tariff item 2922.21.00, consistent with chapter note 5(C)(1) which classifies inorganic salts with the organic compound.
2922.21.00Dye Coupler H Salt Monosodium 1-Amino-8-OH-4,6-NDS
Dye Coupler H Salt Monosodium is the monosodium salt of 1-amino-8-hydroxy-4,6-naphthalenedisulfonic acid. It is a separate chemically defined aminohydroxynaphthalenesulphonic acid salt, falling under tariff item 2922.21.00.
2922.21.00Gamma Acid (6-Amino-1-naphthol-3-sulfonic acid salt)
Gamma Acid (6-amino-1-naphthol-3-sulfonic acid) and its salts are aminohydroxynaphthalenesulphonic acids used in the naphthol AS dye series. They are separate chemically defined compounds or salts, falling under tariff item 2922.21.00.
2922.21.00H Acid Free Acid (4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid)
H Acid Free Acid (4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid) is a separate chemically defined aminohydroxynaphthalenesulphonic acid. It is used in dye coupling reactions and is classified under tariff item 2922.21.00.
2922.21.00H Acid Monopotassium Salt
H Acid Monopotassium Salt is the monopotassium salt of 4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid. As a salt of an aminohydroxynaphthalenesulphonic acid, it falls under tariff item 2922.21.00, with classification following the organic compound per chapter note 5(C)(1).
2922.21.00H-Acid Monosodium Salt (1-Amino-8-Hydroxy-4,6-NDS)
H-Acid Monosodium Salt (1-amino-8-hydroxy-4,6-NDS) is a key dye coupler intermediate. It is the monosodium salt of an aminohydroxynaphthalenesulphonic acid, classified under tariff item 2922.21.00.
2922.21.00H Acid Monosodium Salt (4-Amino-5-hydroxy-2,7-naphthalenedisulfonic acid, monosodium salt)
H Acid Monosodium Salt (4-amino-5-hydroxy-2,7-naphthalenedisulfonic acid, monosodium salt) is a key dye intermediate. It is a salt of an aminohydroxynaphthalenesulphonic acid, classified under tariff item 2922.21.00.
2922.21.00Monosodium 1-Amino-8-hydroxy-4,6-naphthalenedisulfonate
Monosodium 1-amino-8-hydroxy-4,6-naphthalenedisulfonate is the monosodium salt of an aminohydroxynaphthalenesulphonic acid. It is a separate chemically defined compound, falling under tariff item 2922.21.00.
2922.21.00Technical Grade 1-Amino-8-Hydroxy-4,6-Naphthalenedisulfonic Acid Na Salt
Technical grade 1-amino-8-hydroxy-4,6-naphthalenedisulfonic acid sodium salt is the monosodium salt of an aminohydroxynaphthalenesulphonic acid. It is a separate chemically defined compound with allowed stabilizers, classified under tariff item 2922.21.00.