Dipotassium Carbonate Calcined Soda Ash from Japan
Calcined dipotassium carbonate, produced from potash, is a form of potassium carbonate (K2CO3) obtained by calcination. It serves as an alkaline agent in textile dyeing and wool processing. As a separate chemically defined compound, it is correctly classified under tariff item 2836.40.00 for potassium carbonates, with no organic or excluded components per Chapter 28 notes.
Duty Rate — Japan → Canada
0%
Import Tips
• Verify the calcination process does not introduce impurities that could shift classification; provide a certificate of analysis
• For textile applications, confirm no other chemical treatments have been applied that would make it a preparation
• Keep records of the production method to justify the tariff classification if questioned by CBSA