Sodium diacetate is white crystal or powder, with acetic acid odor, easily to absorb moisture, easily to dissolve in water, heated to 150℃ above decomposition, with flammability, in cool dry conditions stable property.Sodium diacetate mainly depends on the decomposition of molecular acetic acid to play an antibacterial effect, it has a good inhibition of bacteria and mold.Sodium diacetate is an unprescribed ADI and is recognized by the FDA as GRAS.