Distilled Trimethyl Phosphite 98%
Distilled trimethyl phosphite at 98% purity is a separate chemically defined organic compound, an ester of phosphorous acid. It is used in pharmaceutical phosphonate synthesis and qualifies under Chapter 29 Note 1(a) as a chemically defined compound, even with minor impurities.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is a different phosphite ester
Other phosphite esters are classified under the residual tariff item.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the product is not dissolved in a solvent or mixed with other substances, as Chapter 29 Note 1 limits coverage to pure compounds or specific solutions
• Provide documentation showing the distillation process and purity level to support classification
• Verify the end-use to ensure it is not a formulated product excluded by Chapter 29 Note 2
Related Products under Tariff item 2920.23.00
99% Pure Trimethyl Phosphite
High-purity trimethyl phosphite (99%) is a separate chemically defined organic compound with the formula P(OCH3)3, an ester of phosphorous acid. It is used as a reagent in fine chemical synthesis for agrochemicals and polymers, and meets the criteria of Chapter 29 Note 1(a) as a chemically defined compound without added substances.
Industrial Grade Trimethyl Phosphite
Industrial-grade trimethyl phosphite is a separate chemically defined organic compound used in large-scale production of flame retardants and plasticizers. It meets Chapter 29 Note 1(a) criteria as a chemically defined compound, and its industrial grade does not exclude it from the heading.
Stabilized Trimethyl Phosphite
Stabilized trimethyl phosphite contains an added stabilizer for safe transport, which is permitted under Chapter 29 Note 1(f) as a stabilizer necessary for preservation or transport. It remains classified as a phosphite ester under tariff item 2920.23.00, provided the stabilizer does not make it suitable for a specific use.
Technical Trimethyl Phosphite
Technical-grade trimethyl phosphite is a separate chemically defined organic compound used in pesticide manufacturing. It qualifies under Chapter 29 Note 1(a) as a chemically defined compound, and technical grade does not preclude classification as long as it is not a formulated product.
Trimethyl Phosphite
Trimethyl phosphite is a colorless liquid organophosphorus compound with the formula P(OCH3)3, classified as a phosphite ester. It is a separate chemically defined compound used as a key reagent in organic synthesis for producing pesticides and other chemicals, meeting Chapter 29 Note 1(a).