High-Purity Calcium Cyanide for Laboratory Use from Mexico
Laboratory-grade calcium cyanide is a high-purity form (99%+) used in analytical chemistry for qualitative and quantitative testing of cyanide reactions. It is explicitly classified under HTS 2837.19.01.15 as calcium cyanide, a simple inorganic cyanide fitting Chapter 28 Note 2 exclusions for organo-inorganic compounds. Supplied in small, sealed containers for research safety.
Duty Rate — Mexico → United States
10%
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
• Require end-user certificates for labs to meet chemical control laws; use child-resistant packaging per CPSC
• Avoid bulk imports misclassified as industrial grades