Gold Refinery Arsenic Ash from Mexico
Gold refinery arsenic ash is a fine ash residue generated during gold refining roaster operations, rich in arsenic trioxide precursors. It is used solely for arsenic chemical compound manufacturing, making it a residue of a kind used for the extraction of arsenic or the manufacture of its chemical compounds. This ash falls under tariff item 2620.60.00 as it contains arsenic and is not from iron or steel manufacture.
Duty Rate — Mexico → Canada
Import Tips
• Document the source of the ash from gold refining to distinguish it from municipal waste ash, which is excluded
• Ensure the ash is not classified as precious metal waste under heading 71.12, which would change the tariff classification
• Provide evidence of the intended use for arsenic compound manufacturing to CBSA