Trimethyl Phosphite
Trimethyl phosphite is a colorless liquid organophosphorus compound used as a reagent in organic synthesis and as an intermediate. As a phosphite ester, it falls under the 'other' category of tariff item 2920.29.00, which covers phosphoric esters and their derivatives not elsewhere specified.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the product is considered an organo-inorganic compound rather than a phosphoric ester
Phosphites may be classified as organo-inorganic compounds under heading 29.31 in some interpretations.
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
• Provide the chemical formula (P(OCH3)3) and CAS number on import documents
• Be aware that trimethyl phosphite is flammable and may require special handling and transport documentation
• Verify whether the product is subject to Canadian chemical control regulations
Related Products under Tariff item 2920.29.00
Bis(2,4-dicumylphenyl) Pentaerythritol Diphosphite
Bis(2,4-dicumylphenyl) pentaerythritol diphosphite is a high-molecular-weight phosphite ester used as a processing and long-term heat stabilizer in nylon and other engineering plastics. Its dual phosphite functionality and complex structure place it within the scope of phosphoric esters and their salts, specifically as an 'other' phosphite ester under tariff item 2920.29.00.
Dibutyl Phosphite
Dibutyl phosphite is a dialkyl phosphite ester used as a reactive intermediate in the production of flame retardants and adhesives. As a phosphoric ester derivative, it falls under the 'other' category of tariff item 2920.29.00, which covers phosphites not elsewhere specified.
Diisodecyl Pentaerythritol Diphosphite
Diisodecyl pentaerythritol diphosphite is a complex phosphite ester antioxidant used to stabilize polyolefins during processing. Its structure, containing multiple phosphite groups, places it within the scope of phosphoric esters and their derivatives, specifically under the 'other' tariff item 2920.29.00.
Dioctadecyl Pentaerythritol Diphosphite
Dioctadecyl pentaerythritol diphosphite is a high-molecular-weight phosphite ester that provides long-term thermal stability to high-density polyethylene. As a phosphoric ester derivative, it is classified under the 'other' category of tariff item 2920.29.00, which covers phosphites not specifically named elsewhere.
Diphenyl Decyl Phosphite
Diphenyl decyl phosphite is a mixed phosphite ester used as an antioxidant in lubricants and greases. Its structure, containing both phenyl and decyl groups, places it within the scope of phosphoric esters and their derivatives, specifically under the 'other' tariff item 2920.29.00.
Ethyl Diphenyl Phosphite
Ethyl diphenyl phosphite is a mixed phosphite ester used as a melt processing stabilizer for engineering plastics. As a phosphoric ester derivative, it falls under the 'other' category of tariff item 2920.29.00, which covers phosphites not elsewhere specified.