Dimethyl-N,N-dimethyl phosphoramidate from China
Dimethyl-N,N-dimethyl phosphoramidate is a phosphoramidate ester with all methyl substituents on both phosphorus and nitrogen atoms. Classified under HTS 2929.90.50.20 due to its precise match to dialkyl (methyl)-N,N-dialkyl (methyl) phosphoramidate structure. Used primarily as a reagent in nucleotide synthesis and pesticide chemistry.
Duty Rate — China → United States
44%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Label containers with exact chemical name and CAS number; customs requires verification against HTS structural description
• Obtain prior EPA notification if used in pesticide applications to avoid import delays
• Ship under proper UN number for organophosphorus compounds to comply with hazmat regulations