Dicofol Reference Standard USP from Mexico
Dicofol Reference Standard USP is certified reference material of 1,1-Bis(4-chlorophenyl)-2,2,2-trichloroethanol for analytical calibration of pesticide residues. Classified under HTS 2906.29.30.00 due to specific chemical naming despite reference use. Provided with traceability to NIST standards.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Reference standards exempt from EPA pesticide registration but require analytical use declaration
• Must include assigned purity value and uncertainty; generic 'technical grade' rejected
• Class 9 miscellaneous dangerous goods; air shipment common pitfall is lithium battery confusion