Bis(2-chloroethyl) Sulfide from Mexico
Bis(2-chloroethyl) sulfide, known as mustard gas precursor, is a toxic organo-sulfur compound with military history. Strictly controlled under HTS 2930.90.92.51 as other organo-sulfur. Used legitimately in pharmaceutical synthesis under license.
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
• Requires BIS export license and DEA end-user verification
• Triple containment with vapor monitoring mandatory
• Schedule 1 chemical; extensive documentation for legitimate research only