Butyric Anhydride from Mexico
Butyric anhydride, derived from butyric acid, is used in pharmaceutical synthesis and flavor production. As an anhydride of C4 saturated acyclic monocarboxylic acid, it fits HTS 2915.29.50.00.
Duty Rate — Mexico → United States
12.8%
Rate breakdown
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
• CAS 106-31-0 verification prevents acetic/formic confusion
• Highly reactive - nitrogen blanketing recommended
• BP 199°C requires heated transport considerations