4-Amino-2-(N,N-diethylamino) toluene hydrochloride;m-Phenylenediamine;o-Phenylenediamine; Toluene-2,4-diamine; Toluene-2,5-diamine; and Toluene-2,5-diamine sulfate
Amine-function compounds > Aromatic polyamines and their derivatives; salts thereof: > o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof: > 4-Amino-2-(N,N-diethylamino) toluene hydrochloride;m-Phenylenediamine;o-Phenylenediamine; Toluene-2,4-diamine; Toluene-2,5-diamine; and Toluene-2,5-diamine sulfate
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 2921.51.10.00
o-Phenylenediamine
o-Phenylenediamine is an aromatic diamine (C6H4(NH2)2) used primarily as an intermediate in the synthesis of dyes, pharmaceuticals, and agrochemicals. It falls under HTS 2921.51.10.00 as a specifically named o-phenylenediamine, which is an aromatic polyamine listed in the subheading for o-, m-, p-phenylenediamines and diaminotoluenes.
m-Phenylenediamine
m-Phenylenediamine, also known as 1,3-diaminobenzene, serves as a key building block for isocyanates, epoxy resins, and hair dyes. Classified under HTS 2921.51.10.00 as one of the specifically enumerated m-phenylenediamines, which are aromatic polyamines and their derivatives.
Toluene-2,4-Diamine
Toluene-2,4-diamine (2,4-TDA) is a diaminotoluene isomer essential for polyurethane production and toluene diisocyanate (TDI) synthesis. It qualifies for HTS 2921.51.10.00 as a specifically listed toluene-2,4-diamine, an aromatic polyamine derivative.
Toluene-2,5-Diamine
Toluene-2,5-diamine is used in permanent hair dyes and as a photographic chemical intermediate. It is explicitly named in HTS 2921.51.10.00 under diaminotoluenes, fitting the aromatic polyamine definition of the subheading.
Toluene-2,5-Diamine Sulfate
Toluene-2,5-diamine sulfate is the salt form used primarily in oxidative hair colorants for its stability. HTS 2921.51.10.00 specifically includes this salt as a derivative of the named diaminotoluene under aromatic polyamine salts.
4-Amino-2-(N,N-Diethylamino)Toluene Hydrochloride
This substituted diaminotoluene hydrochloride is a specialty dye intermediate for reactive dyes. It is precisely named in HTS 2921.51.10.00 as an aromatic polyamine derivative salt within the diaminotoluene category.
o-Phenylenediamine Dihydrochloride
The dihydrochloride salt of o-phenylenediamine used in pharmaceutical synthesis and analytical reagents. Although base form is named, chapter notes place salts with the parent aromatic polyamine in HTS 2921.51.10.00.
Technical Grade Toluene-2,4-Diamine (98% purity)
Industrial grade toluene-2,4-diamine at 98% purity used in TDI manufacturing. Meets HTS 2921.51.10.00 specific compound criteria despite containing minor isomers, as principal compound is named toluene-2,4-diamine.