Import Antioxidant 168 — Buy in Bulk from Supplier in China

Antioxidant 168 from Panjin Xinanyuan Chemical Industry Co., Ltd. is the phosphite ester Tris(2,4-di-tert-butylphenyl) phosphite, with the molecular formula C42H63O3P. This secondary antioxidant is supplied as a white crystalline powder, designed to stabilise polymers against thermal and oxidative degradation during processing and end use. It functions by decomposing hydroperoxides into non-radical products, thereby inhibiting chain reactions that cause material breakdown.

The compound is compatible with polyolefins such as polypropylene and polyethylene, as well as engineering plastics including ABS, PS and PET. It offers low volatility and high resistance to extraction by water, which preserves its effectiveness in moisture-prone applications. Typical industry use includes extrusion, injection moulding and fibre production, where it is often paired with primary antioxidants like 1010 to extend processing stability. Standard practice is to incorporate it at concentrations between 0.1 and 0.5 percent by weight, depending on the polymer and processing conditions.

Buyers sourcing this additive include manufacturers of automotive components, packaging films and consumer goods where long-term stability is critical. The product is shipped from Panjin Chemical Industry Park in Liaoning, with packaging designed to prevent moisture ingress and contamination. Common trade terms for bulk shipments include FOB Qingdao or Dalian, with MOQ and lead time confirmed directly with the supplier. It is used in industries where heat resistance and colour retention are key performance indicators.

Panjin Xinanyuan Chemical Industry Co., Ltd. is based in Panjin Chemical (Plastic) Industry Park, Liaoning Province, China. The company specialises in the production and supply of chemical additives for the plastics and rubber industries, with a focus on stabilisers and antioxidants. Its location within a dedicated chemical industry park indicates access to logistical infrastructure and raw material supply chains tailored for bulk chemical production.

The supplier is listed as an imported tier entity with a harbor trust tier, reflecting a baseline level of verification for international trade. While the response rate and average response hours are currently not available, the company’s profile confirms its role as a producer rather than a trading intermediary. Buyers can expect direct sourcing from the manufacturing site, with product specifications and certifications provided upon request.