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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing metal impurities directly linked to carbon
Organo-inorganic compounds with metals fall under heading 2931 per chapter notes.
If sold as pesticide intermediate mixture
Mixtures for specific pesticide use may shift to Chapter 38 if not pure chemical.
If diluted in solvent for transport exceeding safety norms
Solutions not solely for safety/transport per note 2(e) classify as chemical preparations.
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Import Tips & Compliance
• Obtain chemical import license and ensure SDS compliance with TSCA pre-manufacture notification if not on inventory
• Verify purity certificate (>98%) as impurities may affect classification; package in UN-approved drums for phosphite hazards
• Avoid misclassification as pesticide intermediate; declare as pure chemical reagent to prevent higher duties
Related Products under HTS 2920.23.00.00
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.