p-Aminoazobenzenedisulfonic acid; and Diazoaminobenzene (1,3-Diphenyltriazene)
Diazo-, azo- or azoxy-compounds: > p-Aminoazobenzenedisulfonic acid; and Diazoaminobenzene (1,3-Diphenyltriazene)
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 2927.00.06.00
p-Aminoazobenzenedisulfonic acid
p-Aminoazobenzenedisulfonic acid is a chemically defined diazo compound featuring an azo (-N=N-) linkage and two sulfonic acid groups, explicitly listed under HTS 2927.00.06.00. It serves as a key intermediate in the synthesis of direct dyes for textiles and paper.
Diazoaminobenzene (1,3-Diphenyltriazene)
Diazoaminobenzene, also known as 1,3-Diphenyltriazene, is a specific diazo compound explicitly named in HTS 2927.00.06.00 featuring the triazene (-NH-N=N-) functional group. Used as a reagent in organic synthesis and photographic chemistry.
p-Aminoazobenzene-2,4-disulfonic acid, 98% purity
High-purity technical grade p-Aminoazobenzene-2,4-disulfonic acid meets Chapter 29 definition for separate chemically defined azo compounds with sulfonic acid groups under HTS 2927.00.06.00. Primary use as dye coupling component.
Diazoaminobenzene stabilized with 0.1% citric acid
Diazoaminobenzene with stabilizer added per Chapter 29 note 2(f), maintaining classification under HTS 2927.00.06.00 as the stabilizer is solely for preservation/transport. Used in analytical chemistry standards.
1,3-Diphenyltriazene technical grade
Technical grade 1,3-Diphenyltriazene (synonym for diazoaminobenzene) explicitly covered by HTS 2927.00.06.00 as listed diazo compound. Intermediate for azo dye synthesis and radical scavenger applications.