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2919.90.50.50/Zinc Dialkyldithiophosphate (ZDDP)/Mexico

Zinc Dialkyldithiophosphate (ZDDP) from Mexico

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 — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• Phosphorus/sulfur ratio certification critical

• API specifications documentation