Isobutyryl Chloride from Mexico
Isobutyryl chloride, derived from isobutyric acid, acts as a key intermediate in polymer and pharmaceutical production. HTS 2915.90.50.10 covers it as a branched-chain saturated acyclic monocarboxylic acid chloride. Its classification adheres to chapter rules for halides.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6096.2%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Confirm isomer purity to distinguish from straight-chain analogs in statistical reporting
• Register with US Agent for TSCA if foreign manufacturer
• Monitor for fuming characteristics requiring specialized ventilation in transport