Sodium diacetate is a kind of food preservative.It is efficacious,widely used,not poisonous. ... useful for some bacteria Sodium Diacetate is a kind of food preservative. It is efficacious,widely used, not poisonous, ... in water (1g/ml), ethanol and olein. As a green food additive in condiment, bean products, meat products, cake, olein ... max.Heavy metal (Pb) (mg/kg)2 max. Food grade Sodium diacetate