Diethyl Chloromethylphosphonate from Mexico
Diethyl chloromethylphosphonate is a key intermediate for pesticides and flame retardants, featuring both phosphonate ester and chloromethyl groups. HTS 2931.59.00.80 classification applies due to halogenation on the organo-phosphorus framework. The compound is a separate chemically defined substance per Chapter notes.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• CAS 1066-86-8 must appear on all shipping documents for traceability
• Comply with Chemical Weapons Convention declarations for phosphorus halides
• Use secondary containment packaging due to lachrymatory properties