p-Toluidine Hydrochloride Monohydrate from Canada
p-Toluidine hydrochloride monohydrate contains one water molecule per formula unit, used in analytical chemistry standards. Chapter Note (d) explicitly includes such aqueous solutions/crystallized forms under HTS 2921.43.90 when constituting normal commercial practice.
Duty Rate — Canada → United States
16.5%
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
• Karl Fischer titration proving monohydrate stoichiometry (<15.3% water)
• Hygroscopic warning labels prevent weight disputes at customs
• Reference material certificates enhance Chapter 29 justification