Research-Grade Methylphosphonic Dichloride
Research-grade methylphosphonic dichloride is an ultra-pure form intended for academic and R&D use in synthesizing phosphonate esters. It is a separate chemically defined compound classifiable under tariff item 2931.51.00, excluding retail preparations.
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 not specifically methylphosphonic dichloride.
Residual subheading for other organo-phosphorus compounds.
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
• State the research purpose on the customs declaration to support classification
• Ensure the product is not put up for retail sale, which could affect classification
• Check if an end-use certificate is needed for controlled chemicals
Related Products under Tariff item 2931.51.00
Distilled Methylphosphonic Dichloride
Distilled methylphosphonic dichloride is a high-purity organophosphorus compound obtained by fractional distillation, intended for research applications in organophosphorus chemistry. It is a separate chemically defined organic compound with a halogen directly linked to carbon, falling under tariff item 2931.51.00 as methylphosphonic dichloride.
Methylphosphonic Dichloride
Methylphosphonic dichloride (CH3P(O)Cl2) is a halogenated organo-phosphorus compound used primarily as a chemical intermediate in organic synthesis. It is a separate chemically defined compound with a phosphorus atom directly linked to carbon and chlorine, classifiable under tariff item 2931.51.00.
Methylphosphonic Dichloride 98% Technical Grade
Technical grade methylphosphonic dichloride at 98% purity contains minor impurities but remains a separate chemically defined organic compound per Chapter 29 Note 1(a). It is used in pesticide and flame retardant synthesis, and is classifiable under tariff item 2931.51.00.
Methylphosphonic Dichloride with Stabilizer
Methylphosphonic dichloride stabilized with an anti-hydrolysis agent for safe transport is classifiable under tariff item 2931.51.00 per Chapter 29 Note 1(f). The stabilizer is necessary for preservation or transport and does not alter the chemical identity of the principal compound.