2-Imidazolidinethione (Ethylene Thiourea) Crystals from Mexico
Crystalline ethylene thiourea (2-imidazolidinethione) explicitly named in HTS 2933.29.0500. Key reagent in synthesis of ethylenebisdithiocarbamate fungicides like ziram and rubber additives.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.60100%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
• Classify as UN3077 Environmentally Hazardous Substance for transport
• Include NMR or HPLC analysis verifying chemical identity
• Avoid bulk packaging over 25kg drums which trigger additional hazmat fees