Rochelle Salt for Silvering Mirrors from Germany
High-purity potassium sodium tartrate, or Rochelle salt, is used in traditional mirror silvering solutions as a reducing agent. It is a separate chemically defined compound with an alcohol function, classified under the tariff item for salts of tartaric acid. The product is essential for depositing silver films.
Duty Rate — Germany → Canada
0%
Import Tips
• Ensure the product is not part of a set with other constituents intended to be mixed, as this could affect classification
• Provide a certificate of analysis and intended use documentation to CBSA
• Verify that the product is not put up in retail packs for a specific use