2007-03-11 23:28:34 · 6 answers · asked by Anonymous in Food & Drink ➔ Non-Alcoholic Drinks
"Expire"? Well, not exactly. Baking soda ( sodium bicarbonate) , like salt (sodium chloride) can lose some of its potency over a period of time, especially if exposed to air.
Sodium bicarbonate is stable for a significant period of time unless exposed to heat or air. When issued in a form for over-the-counter drug use (as an antacid), it usually has a required expiration date of more than a year. When a box of baking soda is left in a refrigerator to help remove food odors, it is recommended that it be replaced in a few months, as it does become less able to absorb the odors. When used in cooking as a baking soda, it probably is potent and stable for a considerable period of time. It is effective in cleaning and laundry use for extended periods of time, unless exposed to air and moisture in a laundry area.
2007-03-12 00:04:38 · answer #1 · answered by JOHN B 6 · 2⤊ 0⤋
If kept in a tightly covered container in a cool dark place,the shelf life is supposed to be indefinite,while baking powder which is basically baking soda (sodium bi carbonate ),with the addition of an acidic ingredient,usually cream of tartar & corn starch,has to be replaced within a year.
2007-03-12 01:55:57 · answer #2 · answered by dee k 6 · 2⤊ 0⤋
yes. if not kept properly, baking soda will absorb moisture from surrounding air and clump up. i suppose it can get mouldy, too.
2007-03-11 23:41:14 · answer #3 · answered by rooster1981 4 · 0⤊ 0⤋
No, it's an an-organic material, like water or carbon dioxide. Just take care to keep it dry.
2007-03-11 23:38:36 · answer #4 · answered by nomolino 3 · 0⤊ 0⤋
Absolutely. Check the date on the package.
2007-03-12 00:36:27 · answer #5 · answered by Tom ツ 7 · 1⤊ 3⤋
yes
2007-03-12 00:46:39 · answer #6 · answered by SCOTLAND! 2 · 0⤊ 2⤋