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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If nitrosated derivative
Nitrosated derivatives classify later in numerical order per chapter note 4.
If mixed with isomers beyond note 2(b)
Complex isomer mixtures become preparations outside pure compounds.
If acyclic alcohol ester dominant
Alcohol classification if not primarily phosphite function.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Use ISO tanks for bulk import; declare stabilizer content if added per note 2(f)
• Monitor for hydrolysis during storage; improper docs lead to EPA holds
• Confirm not halogenated via NMR to stay in 2920 vs 2931
Related Products 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.
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.