Magnesium Bromide Etherate from Mexico
Magnesium bromide diethyl ether complex (MgBr2·(Et2O)2) is a Grignard reagent precursor used in organic synthesis. Despite organic component, classifies as chemically defined bromide under HTS 2827.59.51.00 when meeting Chapter 28/29 purity notes.
Duty Rate — Mexico → United States
3.6%
Rate breakdown
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• NMR/GC analysis proving chemical complex status vs. mixture critical
• Air-sensitive; inert atmosphere packaging required for import inspection