Heys cats & kittens!
So, you readmy laundry soap post and can’t find Washing Sodaanywhere? Not to worry! Scissorkitty to the rescue.
Washing Soda is chemically Na2CO3, and good ol’ fashioned Baking Soda is NaHCO3..
Basically- heat your oven to 400°, and pour a box of baking soda into a glass baking dish. Spread it out evenly, and pop it in the oven! I bake mine for about an hour, stirring every so often. You are simply baking out the water (hydrogen), thereby increasing the salt/carbon.
Baking soda is kind of shiny, and feels sift to touch. It makes water silky. WASHING SODA looks duller, feels grittier, and may have a greyish tinge. AND IS VERY TOXIC!! So- label it properly, and store it well away from your baking supplies.
Tadaa!! Simple science!