Carbonyl Sulfide from Mexico
Carbonyl sulfide (COS) is a colorless, poisonous gas used as a pesticide fumigant and chemical intermediate. It is classified in HTS 2811.19.61 as an other inorganic oxygen compound of carbon and sulfur (nonmetals), per Chapter note exclusions from 2853. Distinct from carbon oxysulfide in notes.
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
• Label as UN2204 with asphyxiant warnings and gas-specific monitors
• Provide GHS sheets confirming <1ppm H2S impurity
• Obtain FIFRA registration if for pesticide use post-import