Potassium Sodium Tartrate Crystals (Rochelle Salt) from Canada
Pure potassium sodium tartrate, also known as Rochelle salt, is a double salt of tartaric acid with potassium and sodium. It falls under HTS 2918.13.3000 as a salt of tartaric acid with alcohol function but without other oxygen functions, meeting Chapter 29 requirements for chemically defined organic compounds. Commonly supplied as white crystalline powder for laboratory and industrial applications.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Verify purity certificate (typically 99%+ assay) as impurities may affect classification under Chapter 29 note (a)
• Include chemical analysis report and CAS number (304-59-6) in documentation to confirm identity as Rochelle salt
• Ensure packaging prevents moisture absorption, as caking could lead to quality disputes at customs