Methadone Phosphate
Methadone phosphate provides a buffered salt form for oral solutions in opioid maintenance programs. It is a salt of methadone (INN) and is classified under tariff item 2922.31.00 as a salt of a named amino-ketone, per the salt rules in chapter note 5.
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 another amino-ketone salt not named in the tariff item.
Residual heading for other amino-ketones.
If imported as a pre-measured oral solution for retail sale.
Medicaments in measured doses are classified in Chapter 30.
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 phosphate salt is stoichiometrically correct and free of excess phosphoric acid, which could alter classification
• As a controlled substance, methadone phosphate requires a Health Canada permit
• Include the INN and salt form on all customs declarations to avoid delays
Related Products under Tariff item 2922.31.00
Amfepramone Hydrochloride
Amfepramone hydrochloride, also known as diethylpropion HCl, is a sympathomimetic amine used as an appetite suppressant in weight loss treatments. It is the salt of amfepramone (INN), an amino-ketone with an oxygen function, and is classified under tariff item 2922.31.00 as a salt of a named INN compound.
Diethylpropion Hydrochloride
Diethylpropion hydrochloride is the INN amfepramone HCl, used as a short-term anorectic agent in obesity management. It is an amino-ketone with an oxygen function and is explicitly covered by tariff item 2922.31.00 as a salt of amfepramone (INN).
Methadone Hydrobromide
Methadone hydrobromide is an alternative salt of methadone, used in pharmaceutical preparations for maintenance therapy in addiction treatment. It is a salt of methadone (INN), an amino-ketone, and is classified under tariff item 2922.31.00 as a salt of a named INN compound.
Methadone Hydrochloride
Methadone hydrochloride is the salt form of methadone, a synthetic opioid used primarily for opioid use disorder treatment and pain management. It is a chemically defined amino-ketone with an oxygen function and is explicitly listed under tariff item 2922.31.00 as a salt of methadone (INN).
Methadone Mesylate
Methadone mesylate is a methanesulfonic acid salt of methadone, used in liquid formulations for pain relief and substitution therapy. It is a salt of methadone (INN) and is classified under tariff item 2922.31.00 per chapter note 5(C)(1), which directs salts to the heading of the organic compound.
Normethadone Hydrochloride
Normethadone hydrochloride is the salt of normethadone, a methadone analog studied for analgesic properties and opioid research. It is explicitly covered by tariff item 2922.31.00 as a salt of normethadone (INN), an amino-ketone with an oxygen function.