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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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳China3.7%+35.0%38.7%
🇲🇽Mexico3.7%+10.0%13.7%
🇨🇦Canada3.7%+10.0%13.7%
🇩🇪Germany3.7%+10.0%13.7%
🇯🇵Japan3.7%+10.0%13.7%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2929.90Lower: 16.5% vs 38.7%

If nitrogen-function dominant

Nitrogen compounds later in chapter take precedence.

3822Lower: 10% vs 38.7%

If lab reagent kit set

Diagnostic/lab reagents as sets in 3822.

2906.19Lower: 15.5% vs 38.7%

If cyclic alcohol ester analog

Material change to cyclic shifts heading.

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Import Tips & Compliance

• FDA prior notice if pharma intermediate; GMP cert for distilled grades

• Test for methanol content (<0.5%) to confirm ester integrity

• Declare CAS 121-45-9 explicitly on commercial invoice

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.

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.

Technical Trimethyl Phosphite

Technical-grade trimethyl phosphite for pesticide manufacturing. Pure compound under HTS 2920.23.00.00, excluding formulated products.