Industrial grade 99% Antioxidant 168 CAS 31570-04-4

Certificate of Analysis-COA 

 Applications 

1. Phosphite Secondary Antioxidant For Melt Processing: As a phosphite type secondary antioxidant it reacts with the hydroperoxides formed by autoxidation and converts them into non-radical and non-reactive products, which limits molecular weight change from chain scission or crosslinking and helps protect compound colour during compounding, pelletising, fabrication and recycling.

2. Synergy With Hindered Phenolic Primary Antioxidants: It is generally not used alone. Combined with hindered phenolic primary antioxidants at a typical total loading of 500 to 2000 ppm it removes the hydroperoxides that would otherwise consume the phenolic antioxidant, so the polymer keeps its long term resistance to thermo-oxidative ageing and the primary antioxidant stays effective for longer.

3. Polyolefin Film, Pipe And Moulding Applications: Used in polyethylene grades such as HDPE and LLDPE, in polypropylene, polybutene and ethylene vinyl acetate copolymers, and also in polyolefin recyclate, covering film blowing, pipe and profile extrusion, injection moulding and blow moulding where the melt is exposed to repeated heat history.

4. Engineering Plastics, Styrenics, Elastomers And Adhesives: Applied in polyamide, polycarbonate, polyacetal, ABS, polystyrene and other styrene homo- and copolymers, in polyesters, and in elastomers and rubber such as BR, SBS and SEBS, as well as in hot melt and solvent based adhesives, coatings, waxes and natural and synthetic tackifier resins.

 Production Line

We operate 10+ production lines, backed by a well-stocked raw material warehouse.

Our workshop is equipped with automated machinery — ensuring high consistency and precision on every order, from trial samples to full container loads.

Every order follows a standardized workflow. Key quality control points are set at every stage.

 Factory Area

Standardized Process Flow

Production Capacity

Located in Shandong, our factory is approximately 300km from Qingdao Port, enabling fast and cost-effective delivery to customers worldwide.