Paraldehyde Stabilized USP from Canada
Paraldehyde is trimeric acetaldehyde forming six-membered oxygen heterocyclic ring, used as hypnotic pharmaceutical under USP standards. Stabilized with sulfuric acid traces per Chapter note 2(f), classified 2932.99.90.90. Excluded from aldehyde heading 2912 by cyclic polymer note 5.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• DEA import permit required for hypnotic substance regardless of quantity
• Acid stabilizer <0.01% prevents 2811 inorganic acid classification
• Light-resistant amber glass mandatory per USP monograph