Isopropyl Methylphosphonic Acid from Japan
Isopropyl methylphosphonic acid features phosphorus bonded to one methyl and one isopropyl group, precisely matching HTS 2930.90.9225's structural requirement. Used as a metabolite marker in pesticide and chemical weapons monitoring. The limited carbon attachment ensures chapter 29 classification.
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
• Provide GC-MS data verifying isopropyl P-C bond; essential for distinguishing from general phosphonates
• Include origin certificates; synthesis route affects dual-use controls under export regulations
• Avoid bulk packaging over 25kg; triggers hazardous material surcharges and additional inspections