I found this and I thought you would enjoy the info
Table salt is 40% sodium by weight, and easily the number one source of sodium for almost everyone. 100 grams of table salt (1/3 cup) provides 38,000 mg of sodium or 1615% of the DV. One teaspoon of salt provides 2325mg of sodium or 98% of the DV. One teaspoon of baking soda provides 1368mg of sodium (57% DV), and one teaspoon of baking powder contains 530mg (22% DV).
So for every 5g(one teaspoon) of baking soda there is 1.4g of sodium in it.
I would have to look into it further to know the full effects over time but on the evidence I found its not something I would consider using on a regular basis