Anhydrous Hydrogen Cyanide (Industrial Grade) from Mexico
Pure anhydrous HCN liquid/gas for large-scale production of nylon precursors and pharmaceuticals, supplied in refrigerated tankers. It is explicitly covered by HTS 2811.12.00.00 as hydrogen cyanide, a key inorganic oxygen compound of nonmetals listed in Chapter Note 2(a). High purity (99.5%+) distinguishes it for chemical synthesis.
Duty Rate — Mexico → United States
14.2%
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
• File TSCA PMN if new chemical use; ensure cryogenic shipping containers meet UN 1051 standards
• Common pitfall: failing to declare toxicity class 1a leading to port refusal