Ammonium Lignosulfonate Spray-Dried Powder from Japan
Spray-dried ammonium lignosulfonate powder from neutralized sulfite pulp waste, serves as a water-reducing agent in concrete and emulsion stabilizer. Despite ammonium cation, classified under HTS 3804.00.10.00 as lignin sulfonic acid salt from wood pulp lyes (note: some classifications debate 2847 placement).
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
• Confirm with CBP ruling HQ H095672 regarding ammonium variants; documentation must trace to sulfite pulping origin
• Monitor moisture content (<8%) to prevent caking and reclassification as liquid preparation
• Include nitrogen analysis to verify ammonium content vs synthetic substitutes