5-Amino-3-phenyl-1,2,4-thiadiazole Technical Grade Powder from Mexico
Technical grade 5-Amino-3-phenyl-1,2,4-thiadiazole powder (98%+ purity) is the industrial form of this named heterocyclic compound used in agrochemical synthesis. Classified under HTS 2934.99.05.00 due to explicit naming regardless of minor impurities allowed by chapter note (a). Supplied with stabilizer for safe handling.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6094.2%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
• Certificate of analysis must show thiadiazole >90% to qualify under specific naming despite technical grade status
• DOT/UN proper shipping name and class required for hazardous material declaration
• Avoid water-dissolved forms per chapter note (d) which maintain classification but require special stability data