Trimethyl Phosphite (TMPi)
Trimethyl phosphite, a phosphorous acid ester, serves as a reagent in organic synthesis, antioxidant production, and pesticide manufacturing. HTS 2920.90.51.00 applies to its status as an inorganic nonmetal acid ester. Highly reactive reducing agent.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If direct P-C bond organophosphorus compounds
Phosphites with prominent P-C structure classified as organo-inorganic.
If other phosphides or similar
Phosphorus-hydrogen compounds sometimes grouped with phosphides.
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Import Tips & Compliance
• DOT hazardous material shipping papers mandatory due to pyrophoric tendencies
• Stabilizer addition documentation prevents reclassification as mixture
Related Products under HTS 2920.90.51.00
Tellurium Diethyldithiocarbamate
Tellurium diethyl dithiocarbamate serves as rubber vulcanization accelerator. Classifies as ester derivative of tellurium inorganic acids with carbamate ligands under HTS 2920.90.51.00. Tire manufacturing application.
Tetraethyl Lead (TEL)
Tetraethyl lead is an organolead compound classified as an ester of inorganic lead acid with ethanol, used historically as an antiknock additive in gasoline. It falls under HTS 2920.90.51.00 as an ester of other inorganic acids of nonmetals (lead considered in context) and their derivatives. Modern imports are limited due to environmental regulations but occur for specialty fuel applications.
Trimethyl Phosphate (TMP)
Trimethyl phosphate is the triester of phosphoric acid and methanol, used as a flame retardant, solvent, and pesticide intermediate. It qualifies under HTS 2920.90.51.00 as an ester of phosphoric acid (inorganic acid of nonmetal phosphorus). Common in polymer processing and extraction processes.
Triethyl Phosphate (TEP)
Triethyl phosphate, formed from phosphoric acid and ethanol, serves as a solvent, plasticizer, and flame retardant in resins and coatings. HTS 2920.90.51.00 covers it as an ester of phosphoric acid, a key nonmetal inorganic acid. Widely used in industrial solvent applications.
Tributyl Phosphate (TBP)
Tributyl phosphate is a phosphoric acid triester with butanol, employed in nuclear fuel reprocessing, solvent extraction, and as a defoamer. Classified in HTS 2920.90.51.00 for esters of inorganic phosphorus acids excluding halides. Key in hydrometallurgy processes.
Triphenyl Phosphate (TPP)
Triphenyl phosphate ester from phosphoric acid and phenol acts as a flame retardant in PVC, polyurethane, and engineering plastics. Falls under HTS 2920.90.51.00 as a nonmetal inorganic acid ester. Essential for consumer electronics housing.