HS Code for Diphenylamine

Diphenylamine and its derivatives are classified under HS code 2921.44. This classification is situated within Chapter 29 (Organic Chemicals) and heading 2921, which covers amine-function compounds. Specifically, diphenylamine is an aromatic monoamine, where the nitrogen atom is attached to two phenyl groups. Subheading 2921.44 is the specific provision for diphenylamine, its derivatives, and their salts. This chemical is widely used as a stabilizer in nitrocellulose-based explosives, an antioxidant in the rubber industry, and as a post-harvest fungicide for fruit. The classification is determined by the molecular structure of the secondary aromatic amine. Under the Harmonized System, the presence of the two aromatic rings directly bonded to the amine group necessitates its placement in this specific subheading.

Products Included

• Diphenylamine (pure)
• Octylated diphenylamine
• Nonylated diphenylamine
• Diphenylamine hydrochloride (salt)
• Diphenylamine sulfate (salt)

Common Misclassification

Diphenylamine is often confused with 2921.41 (Aniline and its salts) or 2921.43 (Toluidines and their derivatives). While these are all aromatic monoamines, the number of phenyl groups and the presence of methyl groups on the ring differentiate them. It may also be misclassified under 3811.21 or 3812.39 if it is part of a prepared additive or antioxidant mixture, but the pure chemical remains in 2921.44.

FAQ

What is the HS code for Diphenylamine?

The HS code for Diphenylamine and its derivatives is 2921.44.

Is octylated diphenylamine classified here?

Yes, octylated diphenylamine is considered a derivative of diphenylamine and is classified under HS code 2921.44.