Trimethyl Phosphite
Trimethyl phosphite, a colorless liquid organophosphorus compound with the formula P(OCH3)3, is a separate chemically defined organic compound. It serves as a key reagent in organic synthesis for producing pesticides and falls under tariff item 2920.23.00 as a phosphite ester.
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 this residual heading.
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 a mixture of isomers or a solution in a solvent that makes it suitable for a specific use
• Provide the chemical formula and purity to CBSA
• Be aware that trimethyl phosphite is a controlled precursor in some jurisdictions; check with Health Canada for permits
Related Products under Tariff item 2920.23.00
99% Pure Trimethyl Phosphite
High-purity trimethyl phosphite (99%) is a separate chemically defined organic compound, an ester of phosphorous acid, used in fine chemical synthesis for agrochemicals and polymers. It falls under tariff item 2920.23.00 as the specific phosphite ester, with no halogenation or other modifications.
Distilled Trimethyl Phosphite 98%
Vacuum-distilled trimethyl phosphite at 98% purity is a chemically defined phosphite ester used in pharmaceutical phosphonate synthesis. It is classifiable under tariff item 2920.23.00 as trimethyl phosphite, meeting chapter purity criteria for separate organic compounds.
Industrial Grade Trimethyl Phosphite
Industrial-grade trimethyl phosphite for large-scale production of flame retardants and plasticizers is a separate chemically defined organic compound. It falls under tariff item 2920.23.00 as the specific phosphite ester, regardless of industrial use, provided it meets chapter purity criteria.
Stabilized Trimethyl Phosphite
Trimethyl phosphite with added stabilizer for safe transport is classifiable under tariff item 2920.23.00, as chapter note 1(f) permits added stabilizers necessary for preservation or transport. The stabilizer does not render the product particularly suitable for a specific use, so it remains a separate chemically defined compound.
Technical Trimethyl Phosphite
Technical-grade trimethyl phosphite for pesticide manufacturing is a pure compound under tariff item 2920.23.00, excluding formulated products. It is a separate chemically defined organic compound, and its technical grade does not preclude classification as trimethyl phosphite.