Diethyl Ethylphosphonate 98% Technical Grade
Technical grade diethyl ethylphosphonate at 98% purity, used in industrial synthesis of organophosphorus compounds and as a flame retardant additive precursor. As the named compound of tariff item 2931.43.00, it is classified here regardless of purity, provided it is a separate chemically defined compound per Chapter 29 Note 1(a).
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 technical grade contains impurities that make it not a separate chemically defined compound.
Impurities beyond those normally present could exclude it from Chapter 29 Note 1(a).
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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 a separate chemically defined compound with no added substances that alter its general use
• Provide a certificate of analysis showing 98% purity and the absence of impurities that could change classification
• Declare the intended industrial use to the CBSA for accurate assessment
Related Products under Tariff item 2931.43.00
DEEP Stabilized with 0.1% Antioxidant
Diethyl ethylphosphonate stabilized with 0.1% antioxidant for transport and storage stability. The added stabilizer is necessary for preservation or transport and does not render the product particularly suitable for a specific use, qualifying it under Chapter 29 Note 1(f). This is the named compound of tariff item 2931.43.00.
Diethyl Ethylphosphonate
Diethyl ethylphosphonate (DEEP), a non-halogenated organo-phosphorus compound used primarily as a chemical intermediate in organic synthesis and flame retardant production. It is the exact compound named in tariff item 2931.43.00, which is the sole tariff item in subheading 2931.43.
Diethyl Ethylphosphonate in 10% Ethanol Solution
Diethyl ethylphosphonate dissolved in a 10% ethanol solution for safe transport. The ethanol solution is a normal and necessary method of putting up the product for safety or transport, and the solvent does not make the product particularly suitable for a specific use, per Chapter 29 Note 1(e). The product is the named compound of tariff item 2931.43.00.
High Purity Diethyl Ethylphosphonate 99.5%+
Ultra-high purity diethyl ethylphosphonate (99.5%+) for pharmaceutical intermediate and specialty chemical synthesis. It is the named compound of tariff item 2931.43.00, and the high purity does not affect classification as it remains a separate chemically defined compound under Chapter 29 Note 1(a).