You can. All you really need to do is keep it away from moisture and dry. Once damp, it can spoil. I use separate containers that are airtight that I keep my flour, sugar, cornmeal, corn starch, Rice, instant mashed potatoes, baking powder and baking soda in. If you freeze the powder, you still need to store inside an airtight container or else the powder will absorb the odors that are common in most freezers and taste bad when used in recipes.
Baking Powder
I believe it is a powder before it is set to refrigerate.
Baking powder in a recipe helps your item rise when baking.
baking powerder is baking powder is not the same!
baking powder
Refrigerate dough for at least 30 minutes before baking to help it firm up and hold its shape better during baking.
Baking soda does not rise as well as baking powder
No, baking powder does not absorb odors when used in baking.
Baking powder is an acid
baking powder is neutral
Baking soda is an alternative to baking powder that can be used in baking recipes.
the ingredients of baking powder are baking soda and cream of tartar. So baking powder has less baking soda per amount.