High Purity 4,4'-Methylenedianiline Flakes
High purity (>99%) 4,4'-methylenedianiline supplied in flake form for precise industrial dosing in isocyanate reactions. Explicitly under HTS 2921.59.3000 as the pure, chemically defined aromatic polyamine matching the tariff description. Critical intermediate for MDI production.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If classified as an aniline derivative rather than polyamine
Monocyclic aromatic amines fall under 2921.42, but MDA's diamine structure prioritizes polyamine heading.
If for cyclic hydrocarbons if amine function is minor
Base hydrocarbon structure without dominant amine function shifts to Chapter 29 acyclic/cyclic hydrocarbons.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Provide melting point and assay data in entry docs to distinguish from lower grades
• Ensure nitrogen blanketing during storage/shipping to prevent oxidation
• Check Anti-Dumping duties if sourced from specific countries like Japan or Europe
Related Products under HTS 2921.59.30.00
4,4'-Methylenedianiline (MDA)
4,4'-Methylenedianiline is a specific aromatic polyamine compound with the chemical formula C13H14N2, consisting of two aniline groups linked by a methylene bridge. It falls under HTS 2921.59.3000 as it is explicitly named in the tariff schedule within the subheading for other aromatic polyamines and their derivatives. This chemically defined organic compound is used primarily in industrial chemical synthesis.
4,4'-Methylenedianiline Dihydrochloride Salt
This is the dihydrochloride salt form of 4,4'-methylenedianiline, a derivative where the amine groups are protonated with HCl. It remains classified under HTS 2921.59.3000 as salts of aromatic polyamines are included with the parent compound per chapter note 3(C)(1). Used in specialized chemical processes requiring the salt for solubility.
Technical Grade 4,4'-Methylenedianiline with Stabilizer
Technical grade 4,4'-methylenedianiline containing impurities or added stabilizers for preservation/transport, still primarily the named compound. Classified under HTS 2921.59.3000 as chapter note (f) allows stabilizers without changing the principal classification. Intended for polyurethane precursor manufacturing.
4,4'-Methylenedianiline Aqueous Solution 20%
20% aqueous solution of 4,4'-methylenedianiline, prepared as a normal transport method per chapter note (d). Remains classified under HTS 2921.59.3000 as the dissolved chemically defined compound. Used for safer handling in formulation plants.