Diethyl Chloromethylphosphonate from China
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 — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
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