Methanesulfonyl Chloride from China
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 — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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