Sodium Bicarbonate, an alkali used to leaven biscuits, pancakes, muffins and other baked goods. Popular as a toothpaste substitute (often mixed with salt and/or hydrogen peroxide). A helpful deodorant in refrigerators. A handy helper in many cleaning jobs around the house. Baking Soda is an alkaline agent that reacts with acid substances (such as fruits, dairy, and sweeteners in the batter) to produce an airy, spongy texture in baking. Aluminum Free pure sodium bicorbonate derived from a naturally occurring source; it is extracted from the earth.