Diphosphorus Tetroxide from China
Diphosphorus tetroxide (P2O4) is a white hygroscopic solid used as a phosphorylating agent in chemical synthesis. It is classified under tariff item 2811.19.00 as an 'other inorganic oxygen compound of non-metals' because it is a separate chemically defined oxide of phosphorus, not specifically named elsewhere in Chapter 28.
Duty Rate — China → Canada
0%
Import Tips
• Diphosphorus tetroxide is hygroscopic and must be shipped in airtight, moisture-proof containers; include this information in the commercial invoice
• The CBSA may request a certificate of analysis to confirm the chemical identity and purity
• Verify that the product is not a mixture with other phosphorus oxides, which would change the classification