Industrial Naphthalene-1,3,6,7-Trisulfonic Acid Blend from Japan
Industrial-grade 50/50 blend of 1,3,6- and 1,3,7-naphthalenetrisulfonic acids for synthetic dye production. Classifies under HTS 2904.10.15.00 as the explicitly named mixture of these sulfonated hydrocarbon derivatives.
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
• Maintain batch records showing isomer ratio consistency to support specific HTS over basket codes
• Include GHS safety data sheets translated to English for CBP review