That is what I also use it for. Now you have used two terms, first baking powder and now baking soda.
http://chemistry.about.com/cs/...
Both are different. Now can any one explain when there is no controversy over Talc or Boric powder then why go for unknowns? Every house should have talcum powder in some corner or the other while Boric powder is a niche item.
Regards,
Arif.