Soda Crystals Baking Soda -

: Baking soda is a leavening agent that produces carbon dioxide when mixed with acid (like vinegar or buttermilk), causing dough to rise. Soda crystals should never be used in baking. Growing Baking Soda Crystals

If you have paint on a metal hinge or a paintbrush, a solution of hot water and soda crystals (1:10 ratio) will soften latex paint for easy removal. soda crystals baking soda