Chloromethylphosphonic Acid from Japan
Chloromethylphosphonic acid is a halogenated phosphonic acid used in agrochemical synthesis and metal surface treatment. Classified in HTS 2931.59.00 for its chloromethyl group directly attached to phosphorus with carbon linkage.
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
• Test for phosphonate vs phosphate structure for accurate classification
• Include pH adjustment procedures in SDS for safe handling
• Comply with pesticide precursor regulations if destined for agrochemical production