Dimethyl Phosphite Reagent Grade from Mexico
Reagent-grade dimethyl phosphite (ACS spec) for laboratory use is classified as a phosphite ester in HTS 2920.21.00.00 under chapter note (a). Ideal for R&D in phosphonate chemistry.
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
• Include lot-specific purity certs; small qty exempt from some hazmat but label anyway; DEA watch if downstream narcotics