Pyridine Sulfate from Canada
Pyridine sulfate is the acidic salt formed from pyridine and sulfuric acid, used in analytical chemistry and as a reagent. Chapter 29 note (C)(1) requires classification with the organic pyridine base. HTS 2933.31.00.00 designation.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Corrosive solid classification requires UN 1804 labeling
• Confirm stoichiometric ratio for salt verification
• pH testing documentation prevents acid mixture classification