pecificity: White crystalline powder, or plate crystal specific gravity 2.220,when heated to 100°C,it may loss crystal water. Soluble in acid, has  hygroscopicity, acidic property appeared in a aqueous solution.

Application:  In food industry, it is used as leavening agent, dough regulator, buffer, modifier, solidification agent, nutritional supplement, chelate agent, flulty agent for bake. Cake, ferment agent buffer, fruit acid solidification in bread and cracker yeast food, modifier in meat organization, improve sacc haification and ferment in brew.