Light Burned Magnesia for Rubber Industry from Canada
Light burned (caustic) magnesia used as an acid acceptor in rubber vulcanization. HTS 2519.90.50.00 covers this reactive 'other magnesium oxide' from magnesite calcination at 700-1000°C.
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
• Activity index documentation differentiates light-burned from dead-burned
• Mesh size specification (150-325 mesh typical for rubber) supports use claims
• Ensure no stearate coating; coated goes to Chapter 38