Tripropyl Phosphorothioate Flame Retardant Intermediate from Mexico
A high-purity grade of 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6-trioxide used specifically as an intermediate in synthesizing phosphorus-based flame retardants for plastics. Classified under HTS 2931.46.00.00 due to its precise organo-phosphorus cyclic structure without halogens. Supplied as white crystalline powder for industrial chemical processing.
Duty Rate — Mexico → United States
13.7%
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
• Provide detailed end-use statement specifying flame retardant synthesis to support classification and avoid reclassification as finished additive
• Confirm batch testing for phosphorus content >40% to distinguish from generic organophosphorus mixtures
• Register under TSCA Premanufacture Notification if annual import volume exceeds 10,000 lbs