Methanesulfonyl Chloride from Mexico
Methanesulfonyl chloride (MsCl) is a colorless liquid organo-sulfur compound used as a reagent in organic synthesis for converting alcohols to mesylates. It falls under HTS 2930.90.92.51 as an organo-sulfur compound containing sulfur directly linked to carbon, classified as 'other' within heading 2930. This compound is essential for sulfonation reactions in pharmaceutical and fine chemical production.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Ensure COA verifies purity >99% as impurities may affect classification or trigger REACH compliance
• Provide safety data sheets for corrosive handling; common pitfall is inadequate HazMat labeling
• Verify stabilizer content doesn't exceed note 2(f) limits to avoid reclassification