Preparation of Sodium diacetate
Preparing sodium diacetate by one step reaction based on acetic anhydride and sodium hydrate (with water as solvent) was studied. The optimized conditions, by orthogonal design were determinded as follows: anhydride∶sodium hydrate∶water = 1.14∶1∶1.32 (molar), the initial temperature of reaction system was 90℃, the time was 30min, and yild was 95%, quality was up to FAO/WHO standard published in 1994.