4,4'-Diaminodiphenylmethane (DADPM)
DADPM, or methylene bis(o-chloroaniline) derivative, is an aromatic polyamine used in polyurethane curing agents. It qualifies under HTS 2921.51.30.00 per additional U.S. note 3 for listed diaminotoluene derivatives and salts.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not specifically listed in U.S. note 3
Other derivatives fall into the general 'other' subheading.
If classified by its carboxylate function when synthesized differently
Chapter notes prioritize latest numerical heading for multi-function compounds.
If when diluted in solvents for safe transport beyond note 1(e) limits
Excess solvent makes it a preparation, not pure compound.
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Import Tips & Compliance
• Submit structural formula and synthesis route to confirm note 3 listing
• Handle as potential carcinogen; ensure proper hazmat shipping declarations
• Test for isomer purity to prevent shift to general polyamine headings
Related Products under HTS 2921.51.30.00
o-Phenylenediamine Dihydrochloride
o-Phenylenediamine dihydrochloride is the salt form of o-phenylenediamine, a key aromatic polyamine used in dye and pharmaceutical synthesis. It falls under HTS 2921.51.30.00 as a derivative salt of o-phenylenediamine described in additional U.S. note 3 to section VI, which covers specific listed organic compounds.
p-Phenylenediamine Sulfate
p-Phenylenediamine sulfate is a salt derivative used primarily in oxidative hair dyes and rubber antioxidants. Classified under HTS 2921.51.30.00 as it matches products in additional U.S. note 3, specifically salts of p-phenylenediamine.
2,4-Diaminotoluene (2,4-Toluenediamine)
2,4-Toluenediamine is a diaminotoluene isomer used in dyes, polymers, and as a chain extender. Falls under HTS 2921.51.30.00 as described in additional U.S. note 3 to section VI for these specific aromatic polyamines.
o-Phenylenediamine (1,2-Diaminobenzene)
Pure o-phenylenediamine serves as an intermediate for benzimidazoles, dyes, and fungicides. Classified in HTS 2921.51.30.00 because it matches the products enumerated in additional U.S. note 3 to section VI.
p-Phenylenediamine (1,4-Diaminobenzene)
p-Phenylenediamine is widely used in permanent hair colorants and as an antioxidant. It is included under HTS 2921.51.30.00 per the specific listing in additional U.S. note 3.
2,6-Diaminotoluene
2,6-Diaminotoluene functions as a dye intermediate and polymer modifier. Covered by HTS 2921.51.30.00 as a diaminotoluene derivative described in U.S. note 3.