Zinc Dialkyldithiophosphate (ZDDP) from Canada
ZDDP is a metal salt of phosphorodithioic acid used as extreme pressure lubricant additive. Though organo-sulfur, classified as phosphoric ester salt under HTS 2919.90.50.50 per note 5(C)(1). Essential in engine oils.
Duty Rate — Canada → United States
110%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
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
• Phosphorus/sulfur ratio certification critical
• API specifications documentation