Boric Acid Trimethyl Ester
Boric acid trimethyl ester, also known as trimethyl borate, is an ester of boric acid and methanol, used as a boron source in ceramics, flame retardants, and organic synthesis. It is a chemically defined ester of an inorganic acid of a non-metal (boron) and falls under tariff item 2920.90.00 as an 'other' ester of inorganic acids of non-metals.
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 imported as a borate salt rather than an ester
Borate salts are classified under heading 2840, not as esters.
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
• Ensure the product is anhydrous and free of impurities, as water content may affect classification
• Provide a detailed SDS to CBSA, as the product is flammable and volatile
• Check if the product is subject to Canadian chemical regulations for boron compounds
Related Products under Tariff item 2920.90.00
Antimony Glycolate Ester
Antimony glycolate ester is an antimony(III) ethane-1,2-diolate used as a catalyst in PET resin production and as a flame retardant synergist. It is classified under tariff item 2920.90.00 as an ester salt of an inorganic acid of a non-metal. Its role in polymer production and ester structure determine its classification.
Arsenic Acid Methyl Ester
Arsenic acid methyl ester is a monomethyl arsenate used as a herbicide intermediate and wood preservative component. It is classified under tariff item 2920.90.00 as an ester of an inorganic acid of a non-metal. Its arsenic content and ester structure determine its classification, and it is highly regulated due to toxicity.
Chlorpyrifos-methyl
Chlorpyrifos-methyl is an organophosphate insecticide used to control a broad range of pests on grains, vegetables, and turf. As a methyl ester of chlorpyrifos, it is classified under tariff item 2920.90.00 as an ester of an inorganic acid of a non-metal. Its aromatic structure and pesticide function align with the scope of this heading.
Cresyl Diphenyl Phosphate
Cresyl diphenyl phosphate is a mixed aromatic phosphate ester combining cresyl and phenyl groups, used primarily as a flame retardant and plasticizer in hydraulic fluids and engineering plastics. It is a chemically defined ester of phosphoric acid, an inorganic acid of a non-metal (phosphorus), and therefore falls under tariff item 2920.90.00 as an 'other' ester of inorganic acids of non-metals.
Dichlorvos (DDVP)
Dichlorvos (DDVP) is a vinyl phosphate ester pesticide used in fumigation and vaporizers for household and agricultural insect control. It is classified under tariff item 2920.90.00 as an ester of an inorganic acid of a non-metal. Its phosphate ester structure and pesticide application determine its classification.
Diphenyl Methylphosphonate
Diphenyl methylphosphonate is an aromatic phosphonate ester with a methyl group, used in extractive metallurgy and as a flame retardant. It is a chemically defined ester of phosphonic acid, an inorganic acid of phosphorus, and is classified under tariff item 2920.90.00 as an 'other' ester of inorganic acids of non-metals.