Cas no:7758-23-8..Appearance: White powder or flake...Main usage: In food industry, it is used as leavening agent, dough regulator, buffer, modifier, solidification agent, nutritional supplement, chelating agent, e.g., leavening agent in bake and cake; assistant fermentation agent and buffer in bread and biscuit; pectin curing agent, yeast food, modifier in meat product. When applied in fermentation, it can increase the fermentation capacity.