1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt
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: > Aminohydroxynaphthalenesulfonic acids and their salts: > 1-Amino-8-hydroxy-4,6-naphthalenedisulfonic acid, monosodium salt
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 2922.21.25.00
Monosodium 1-Amino-8-hydroxy-4,6-naphthalenedisulfonate
This is the monosodium salt of 1-amino-8-hydroxy-4,6-naphthalenedisulfonic acid, a chemically defined organic compound with amino and hydroxy oxygen functions on a naphthalene core, plus sulfonic acid groups forming the salt. It falls under HTS 2922.21.2500 as a specific aminohydroxynaphthalenesulfonic acid salt. Primarily used as an intermediate in dye synthesis.
CAS 117-94-2 1-Amino-8-Naphthol-4,6-Disulfonic Acid Monosodium Salt
CAS 117-94-2 identifies this pure monosodium salt of 1-amino-8-hydroxy-4,6-naphthalenedisulfonic acid, an oxygen-function amino-compound. Classified under HTS 2922.21.2500 due to its specific structure as an aminohydroxynaphthalenesulfonic acid salt. Used in manufacturing reactive dyes and pigments.
H-Acid Monosodium Salt (1-Amino-8-Hydroxy-4,6-NDS)
Known as H-Acid monosodium salt, this is 1-amino-8-hydroxy-4,6-naphthalenedisulfonic acid monosodium salt, a key dye coupler intermediate. It matches HTS 2922.21.2500 exactly as a named aminohydroxynaphthalenesulfonic acid salt with oxygen-function amino groups. Supplied as white to light brown powder for industrial synthesis.
Technical Grade 1-Amino-8-Hydroxy-4,6-Naphthalenedisulfonic Acid Na Salt
Technical grade version of the monosodium salt, containing allowed stabilizers per chapter note (f), still classified as the pure compound under HTS 2922.21.2500. Features amino-hydroxy oxygen functions on naphthalene with disulfonic sodium salt. Used in bulk for azo dye manufacturing.
Dye Coupler H Salt Monosodium 1-Amino-8-OH-4,6-NDS
Industrial dye coupler known as H Salt, the monosodium salt of 1-amino-8-hydroxy-4,6-naphthalenedisulfonic acid. Precisely HTS 2922.21.2500 as a separate chemically defined oxygen-function amino-naphtholsulfonic salt. Essential for producing direct and reactive dyes in textile industry.