SBM50 is food grade Ã?diketone product used as heat stabilizer of PVC stabilizers CA/ZN BA/ZN, can prevent zinc burning, solve PVC pre-coloring and improve weatherability, can contact with food , , only PVC material approved by US FDA.The product is light white powder. It is easily soluble in diethyl ether, trichloromethane, dimethylbenzene, toluene, and sodium hydroxide solution, slightly soluble in ethyl alcohol, and very slightly soluble in water. At present, -diketone product is the unique PVC material that is suitable for foods and drugs.The product is widely used in PVC materials that contact with foods