Norbornane Diazo Ester from Japan
1-Naphthalenesulfonic acid, 6-diazo-5,6-dihydro-5-oxo-,(octahydro-4,7-methano-1H-indene-2,5-diyl) bis-(methylene) ester, a diazo compound featuring norbornane structure used in specialty polymer crosslinking applications. This exact chemical is enumerated in HTS 2927.00.18.00 under diazo compounds of Chapter 29.
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
• Import with full synthetic pathway documentation proving structure matches tariff nomenclature exactly
• Hazardous material shipping requirements apply (ORM-D or proper UN number); verify DG compliance
• Avoid classification error as general organo-sulfur under 2930—diazo function takes precedence per Chapter 29 notes