Triethyl phosphite
Esters of other inorganic acids of nonmetals (excluding esters of hydrogen halides) and their salts; their halogenated, sulfonated, nitrated or nitrosated derivatives: > Phosphite esters and their salts; their halogenated, sulfonated, nitrated or nitrosated derivatives: > Triethyl phosphite
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
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)
Products classified under HTS 2920.24.00.00
Triethyl Phosphite
Triethyl phosphite is a colorless liquid organophosphorus compound with the formula P(OCH2CH3)3, classified under HTS 2920.24.00.00 as a phosphite ester of an inorganic acid of nonmetal (phosphorous acid). It is a key reagent in organic synthesis for producing phosphonate ligands and flame retardants.
Triethyl Phosphite 98% Technical Grade
Technical grade triethyl phosphite at 98% purity is used in industrial synthesis of herbicides and stabilizers, falling under HTS 2920.24.00.00 as a chemically defined phosphite ester. Minor impurities do not alter its principal classification per chapter note (a).
Triethyl Phosphite Stabilized with BHT
Triethyl phosphite stabilized with butylated hydroxytoluene (BHT) for safe transport and storage, classified under HTS 2920.24.00.00 per chapter note (f) allowing stabilizers necessary for preservation. Used primarily in flame retardant production.
High Purity Triethyl Phosphite 99.5%
Ultra-high purity triethyl phosphite (99.5%) for pharmaceutical intermediate synthesis, directly under HTS 2920.24.00.00 as a separate chemically defined phosphite ester. Meets strict distillation specs for sensitive reactions.
Triethyl Phosphite in Ethanol Solution 50%
50% triethyl phosphite dissolved in ethanol for safe handling, classified under HTS 2920.24.00.00 per chapter note (b) for esters and note (e) for transport solutions not suited for specific use. Used in catalyst preparation.
Triethyl Phosphite with Anti-Dusting Agent
Triethyl phosphite with added anti-dusting agent for bulk handling safety, under HTS 2920.24.00.00 per chapter note (g) allowing identification/safety additives not rendering specific use. Common in polymer additive production.
Distilled Triethyl Phosphite BP Grade
BP-grade distilled triethyl phosphite for biochemical applications, classified as pure phosphite ester under HTS 2920.24.00.00. Free of secondary phosphites via fractional distillation.
Triethyl Phosphite for Pesticide Synthesis
Industrial triethyl phosphite specified for glyphosate synthesis, under HTS 2920.24.00.00 as the base ester despite end use. Meets chapter note prioritizing chemical definition over application.
Triethyl Phosphite with MEHQ Inhibitor
Triethyl phosphite inhibited with 4-methoxyphenol (MEHQ) to prevent polymerization, classified under HTS 2920.24.00.00 per note (f) for necessary stabilizers. Used in resin production.
Technical Triethyl Phosphite 97% Drums
97% technical triethyl phosphite packaged in 200kg drums for bulk chemical import, under HTS 2920.24.00.00 as defined organic compound. Standard for flame retardant manufacturing.