Trimethyl 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: > Trimethyl 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 2920.23.00.00
Trimethyl Phosphite
Trimethyl phosphite is a colorless liquid organophosphorus compound with the formula P(OCH3)3, classified under HTS 2920.23.00.00 as a phosphite ester. It serves as a key reagent in organic synthesis for producing pesticides, flame retardants, and pharmaceutical intermediates.
99% Pure Trimethyl Phosphite
High-purity trimethyl phosphite (99%) used in fine chemical synthesis for agrochemicals and polymers. Falls under HTS 2920.23.00.00 as an ester of phosphorous acid without halogenation or other modifications.
Industrial Grade Trimethyl Phosphite
Industrial trimethyl phosphite for large-scale production of flame retardants and plasticizers. Classified in HTS 2920.23.00.00 as the specific phosphite ester meeting chapter purity criteria.
Stabilized Trimethyl Phosphite
Trimethyl phosphite with added stabilizer for safe transport, compliant with chapter note 2(f). Used in polymer additive synthesis under HTS 2920.23.00.00.
Distilled Trimethyl Phosphite 98%
Vacuum-distilled trimethyl phosphite at 98% purity for pharmaceutical phosphonate synthesis. HTS 2920.23.00.00 as chemically defined phosphite ester.
Technical Trimethyl Phosphite
Technical-grade trimethyl phosphite for pesticide manufacturing. Pure compound under HTS 2920.23.00.00, excluding formulated products.