Vanillin Impurity Standard Piperonal from Canada
Certified reference piperonal at 0.1% concentration in acetonitrile for HPLC calibration in vanillin purity testing. Remains Chapter 29 under note 1(d)/(e) as diluted chemically defined compound for analytical use.
Duty Rate — Canada → United States
14.8%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Label as 'analytical standard only'; comply with DOT shipping for acetonitrile; provide chromatogram validation