Diaminofluorescein from Japan
Diaminofluorescein serves as a fluorescent probe and dye intermediate with dual amine groups on aromatic system. Falls under HTS 2921.59.80.90 as aromatic polyamine derivative despite fluorescent properties. Chapter 29 note (g) excludes only retail coloring matter.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Specify bulk vs analytical grade to determine chapter classification
• Fluorescence quantum yield data supports chemical intermediate identity
• Avoid retail laboratory reagent packaging that triggers Chapter 32 exclusion