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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If organo-sulfur emphasis with metal coordination
Organo-sulfur compounds in 2930 may apply if sulfur atoms are directly linked to carbon and dominate classification per chapter notes.
If as a sugar ether derivative salt
Chapter note (c) includes certain sugar-related salts in 2940-2942, but only if chemically modified from sugars, not naphthalene bases.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Include CAS number and structural formula in commercial invoice to match HTS specificity; comply with TSCA pre-notice if new to US inventory
• Watch for stabilizer additions that could reclassify under note (f)
Related Products 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.
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.