sodium bicarbonate, chemical formula NaHCO? Commonly known as baking soda. Sodium bicarbonate is a white crystal or a fine crystal of opaque monoclinic system. Specific gravity is 2.15. Odorless, nontoxic, salty, soluble in water and slightly soluble in ethanol. It is soluble in 1 parts of water at 25℃ and 12 parts of water at about 18℃.

its aqueous solution is slightly alkaline due to hydrolysis, stable at room temperature, easily decomposed when heated, gradually decomposed above 5℃, completely lost carbon dioxide at 27℃, unchanged in dry air, and slowly deliquesced in humid air.

/iknow-pic.cdn.bcebos.com/86d6277f9e2f78277ce4a8e724b899a91f219"target="_blank"title=""class="ikqb_img_alink"> /iknow-pic.cdn.bcebos.com/86d6277f9e2f78277ce4a8e724b899a91f219? x-bce-process=image%2Fresize%2Cm_lfit%2Cw_6%2Ch_8%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto"esrc="/86d6277f9e2f78277ce4a8e724b899a91f219"/>