Antioxidant 618 is a white waxy solid. Melting point 54-56℃, insoluble in water.
Production method of antioxidant 618:
From dichloropentaerythritol diphosphite and Obtained from the reaction of octadecyl alcohol. Among them, dichloropentaerythritol district phosphate is obtained by the reaction of pentaerythritol and phosphorus trichloride. Another production method is to react pentaerythritol with triphenyl phosphite, and then perform transesterification with octadecyl alcohol to obtain the product.
Uses of antioxidant 618:
Mainly used in polyethylene, polypropylene, polychloride Auxiliary antioxidant for various synthetic resins such as ethylene, ABS resin, and polyester. It has outstanding effects on preventing oxidation and improving color; it has high thermal stability, weather resistance and hydrolysis resistance, so it has good processing stability and good product transparency; it does not pollute and is compatible with ultraviolet absorbers. , the combined use of phenolic antioxidants has a good synergistic effect. It is also a good food antioxidant. Due to its low toxicity, it can replace the food antioxidant BHT.
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