p,p'-Diaminostilbene from Germany
p,p'-Diaminostilbene is an aromatic polyamine featuring a stilbene backbone, used in optical brighteners. As a derivative not covered by prior 2921.59 subheadings, it is classified in HTS 2921.59.80 under the last applicable amine-function heading.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• UV spectral data confirms stilbene chromophore distinguishing from simple diphenylamines
• Check fluorescent properties; may trigger 3204 reclassification if brightener-formulated
• Documentation must emphasize chemical intermediate status over end-use