Songnox 168 Phosphite Stabilizer for Polymers from Canada
Songnox 168 is a secondary phosphite antioxidant that synergizes with primary antioxidants to decompose peroxides in polypropylene during extrusion. It qualifies for HTS 3812.39.9000 as a compound stabilizer for plastics. Used in food packaging films and automotive parts.
Duty Rate — Canada → United States
15%
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
• Include FDA compliance letters if destined for food-contact plastics
• Test for phosphite content to distinguish from general phosphate chemicals
• Package in UN-approved drums; declare as non-hazardous if stabilized