o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof
Amine-function compounds. > Aromatic polyamines and their derivatives; salts thereof: > o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof > o-, m-, p-Phenylenediamine, diaminotoluenes, and their derivatives; salts thereof
Duty Rate (from China)
Subheadings
Products classified under Tariff item 2921.51
1,4-Diaminobenzene (p-Phenylenediamine Base)
>- 1,4-Diaminobenzene (p-phenylenediamine base) is used in photographic chemicals and dyes. It is specifically named in tariff item 2921.51.00, which covers p-phenylenediamine and its derivatives and salts.
2921.51.002,4-Diaminotoluene (2,4-TDA)
>- 2,4-Diaminotoluene (2,4-TDA) is a diaminotoluene isomer used in polyurethane elastomers, dyes, and hair colorants. It is specifically named in tariff item 2921.51.00, which covers diaminotoluenes and their derivatives and salts.
2921.51.002,4-Diaminotoluene (2,4-Toluenediamine)
>- 2,4-Diaminotoluene (2,4-toluenediamine) is a diaminotoluene isomer used in dyes, polymers, and as a chain extender. It is specifically named in tariff item 2921.51.00, which covers diaminotoluenes and their derivatives and salts.
2921.51.002,4-Diaminotoluene Sulfate
2,4-Diaminotoluene sulfate is a salt of diaminotoluene, an aromatic polyamine, used as an intermediate and stabilizer in photographic chemical formulations, particularly for dye developers. As a chemically defined organic compound with an added sulfate group, it falls under tariff item 2921.51.00, which covers o-, m-, p-phenylenediamine, diaminotoluenes, and their derivatives and salts.
2921.51.002,5-Diaminotoluene Sulfate
>- 2,5-Diaminotoluene sulfate is a salt used primarily in permanent hair coloring formulations. Under Chapter 29 note 5(C)(1), salts of organic compounds are classified with the parent compound, so this salt of a diaminotoluene falls under tariff item 2921.51.00.
2921.51.002,6-Diaminotoluene
>- 2,6-Diaminotoluene is a diaminotoluene isomer used as a dye intermediate and polymer modifier. It is a diaminotoluene derivative explicitly named in tariff item 2921.51.00, which covers diaminotoluenes and their derivatives and salts.
2921.51.004,4'-Diaminodiphenylmethane (DADPM)
4,4'-Diaminodiphenylmethane (DADPM) is an aromatic polyamine used in polyurethane curing agents. Although it is not a phenylenediamine or diaminotoluene, it is a derivative of these compounds, and it falls under 2921.51.00 as an 'other' aromatic polyamine derivative.
2921.51.004-Amino-2-(N,N-Diethylamino)Toluene Hydrochloride
>- 4-Amino-2-(N,N-diethylamino)toluene hydrochloride is a substituted diaminotoluene salt used as a specialty dye intermediate for reactive dyes. As a salt of a diaminotoluene derivative, it falls under tariff item 2921.51.00, which covers o-, m-, p-phenylenediamine, diaminotoluenes, and their derivatives and salts.
2921.51.004-Amino-N-ethylaniline Sulfate
4-Amino-N-ethylaniline sulfate is a salt of a p-phenylenediamine derivative, functioning as a photographic dye-forming developer in color negative processing. It is a chemically defined organic compound, and its classification under 2921.51.00 is justified as a derivative of p-phenylenediamine with a sulfate salt.
2921.51.004-Amino-N-phenylaniline (PAD)
4-Amino-N-phenylaniline (PAD) is a derivative of p-phenylenediamine used in dye manufacturing and polymer production. It is a chemically defined organic compound, and it falls under 2921.51.00 as an 'other' aromatic polyamine derivative.
2921.51.004-Nitro-o-phenylenediamine
4-Nitro-o-phenylenediamine is a derivative of o-phenylenediamine, used as an intermediate in the production of photographic developers and dyes. It contains a nitro group, which is not considered a nitrogen function for classification purposes, so it remains within the scope of 2921.51.00 as a derivative of phenylenediamine.
2921.51.00CD-2 Developing Agent (p-Phenylenediamine Derivative)
CD-2 Developing Agent is a commercial p-phenylenediamine derivative used as a color developer in photographic processing solutions. It is a chemically defined organic compound, and its classification under 2921.51.00 is based on its identity as a p-phenylenediamine derivative.
2921.51.00m-Phenylenediamine
>- m-Phenylenediamine (1,3-diaminobenzene) is an aromatic diamine used as a building block for isocyanates, epoxy resins, and hair dyes. It is explicitly named in tariff item 2921.51.00, which covers m-phenylenediamine and its derivatives and salts.
2921.51.00m-Phenylenediamine (m-PDA)
m-Phenylenediamine (m-PDA) is an aromatic meta-diamine used in epoxy resin hardeners and polyimide films. It is a separate chemically defined compound, and it falls under 2921.51.00 as m-phenylenediamine.
2921.51.00N-(2-Aminoethyl)-p-phenylenediamine
N-(2-Aminoethyl)-p-phenylenediamine is a substituted p-phenylenediamine derivative used in color photographic coupler synthesis. It is a chemically defined organic compound with an additional aminoethyl group, and it falls under 2921.51.00 as a derivative of p-phenylenediamine.
2921.51.00N,N-Diethyl-p-phenylenediamine Sulfate
N,N-Diethyl-p-phenylenediamine sulfate is a p-phenylenediamine derivative serving as a color developing agent in color photographic processing. It is a salt of a substituted phenylenediamine, and its classification under 2921.51.00 is based on its identity as a derivative of p-phenylenediamine.
2921.51.00N,N'-Diphenyl-p-phenylenediamine (DPPD)
N,N'-Diphenyl-p-phenylenediamine (DPPD) is a substituted p-phenylenediamine derivative serving as an antiozonant in tire rubber compounds. It is a chemically defined organic compound, and it falls under 2921.51.00 as an 'other' aromatic polyamine derivative.
2921.51.00o-Phenylenediamine
>- o-Phenylenediamine (1,2-diaminobenzene) is an aromatic diamine used as an intermediate in the synthesis of dyes, pharmaceuticals, and agrochemicals. It is specifically named in tariff item 2921.51.00, which covers o-phenylenediamine and its derivatives and salts.
2921.51.00o-Phenylenediamine (1,2-Diaminobenzene)
o-Phenylenediamine (1,2-diaminobenzene) is a pure aromatic diamine used as an intermediate for benzimidazoles, dyes, and fungicides. It is a separate chemically defined compound, and it falls under 2921.51.00 as o-phenylenediamine.
2921.51.00o-Phenylenediamine Dihydrochloride
>- o-Phenylenediamine dihydrochloride is the dihydrochloride salt of o-phenylenediamine, used in pharmaceutical synthesis and as an analytical reagent. Under Chapter 29 note 5(C)(1), inorganic salts of organic compounds are classified with the parent organic compound, so this salt falls under tariff item 2921.51.00.
2921.51.00p-Aminodimethylaniline Hydrochloride
p-Aminodimethylaniline hydrochloride, a derivative of p-phenylenediamine, functions as a photographic developing agent in black-and-white film processing. It is a hydrochloride salt of a substituted phenylenediamine, and it falls under 2921.51.00 as a derivative of p-phenylenediamine.
2921.51.00p-Aminodiphenylamine
p-Aminodiphenylamine serves as an intermediate for rubber antioxidants and dyes. As a derivative of p-phenylenediamine, it is a chemically defined organic compound, and it falls under 2921.51.00 as an 'other' aromatic polyamine derivative.
2921.51.00p-Phenylenediamine (1,4-Diaminobenzene)
>- p-Phenylenediamine (1,4-diaminobenzene) is widely used in permanent hair colorants and as an antioxidant. It is specifically named in tariff item 2921.51.00, which covers p-phenylenediamine and its derivatives and salts.
2921.51.00p-Phenylenediamine Dihydrochloride
p-Phenylenediamine dihydrochloride acts as a primary developing agent in photographic film processing and is a key aromatic polyamine salt. It is the dihydrochloride salt of p-phenylenediamine, and its classification under 2921.51.00 is based on its identity as a salt of p-phenylenediamine.
2921.51.00p-Phenylenediamine Sulfate
>- p-Phenylenediamine sulfate is a salt derivative of p-phenylenediamine used primarily in oxidative hair dyes and rubber antioxidants. Under Chapter 29 note 5(C)(1), salts of organic compounds are classified with the parent compound, so this salt falls under tariff item 2921.51.00.
2921.51.00Technical Grade Toluene-2,4-Diamine (98% purity)
>- Technical grade toluene-2,4-diamine at 98% purity is used in TDI manufacturing. Although it contains minor isomers, the principal compound is toluene-2,4-diamine, which is specifically named in tariff item 2921.51.00. Chapter note 1(b) allows mixtures of isomers of the same organic compound to be classified in this chapter.
2921.51.00Toluene-2,4-Diamine
>- Toluene-2,4-diamine (2,4-TDA) is a diaminotoluene isomer essential for polyurethane production and toluene diisocyanate (TDI) synthesis. It is specifically named in tariff item 2921.51.00, which covers diaminotoluenes and their derivatives and salts.
2921.51.00Toluene-2,5-Diamine
>- Toluene-2,5-diamine is used in permanent hair dyes and as a photographic chemical intermediate. It is a diaminotoluene isomer explicitly named in tariff item 2921.51.00, which covers diaminotoluenes and their derivatives and salts.
2921.51.00Toluene-2,5-Diamine Sulfate
>- Toluene-2,5-diamine sulfate is the sulfate salt of toluene-2,5-diamine, used primarily in oxidative hair colorants for its stability. Under Chapter 29 note 5(C)(1), salts of organic compounds are classified with the parent compound, so this salt falls under tariff item 2921.51.00.
2921.51.00Toluenediamine Photographic Grade
Toluenediamine photographic grade consists of high-purity diaminotoluene isomers optimized for photographic chemical manufacturing. As a mixture of isomers of the same organic compound, it falls under 2921.51.00, which covers diaminotoluenes and their derivatives.