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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other aromatic polyamine salts not specifically enumerated
Chapter note (C) places salts with parent compound, but only named ones in .10.
If other inorganic acid salt predominates
Salts of inorganic acids with organic bases may classify in Chapter 28.
If aqueous solution for safety transport
Chapter 29 note (d) allows water solutions, but preparations may go to 3824.
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Import Tips & Compliance
• Provide salt confirmation via FTIR/NMR spectra in technical documentation
• Ensure pH stability documentation for sulfate salt during ocean transport
• Comply with EU Cosmetic Regulation 1223/2009 concentration limits if transshipping
Related Products 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.
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.