what is it?
2006-11-06 06:52:20 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Alum powder, found amongst spices at most grocery stores, is used in pickling recipes as a preservative, to maintain crispness, and as an ingredient in some play dough recipes. It is also commonly cited as a home remedy or pain relief for canker sores.
Alum [aluminium potassium sulfate], in chemistry, is a term given to the crystallized double sulfates of the typical formula M+2SO4·M3+2(SO4)3·24H2O, where M+ is the sign of an alkali metal (lithium, sodium, potassium, rubidium, or caesium), and M3+ denotes one of the trivalent metal ions (typically aluminium, chromium, or iron (III)).
Hope that helps.
2006-11-06 07:04:06 · answer #1 · answered by Akkita 6 · 0⤊ 0⤋
Where Do You Get Alum
2017-01-09 20:25:47 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Most larger supermarkets have it in the spice area. I use it each year for growing crystals in my chem class.
2006-11-06 07:07:16 · answer #3 · answered by The Cheminator 5 · 0⤊ 0⤋
It is a sour substance sometimes used in cooking.
It was also used in cartoons to put in a character's mouth to shut it for awhile.
2006-11-06 06:57:34 · answer #4 · answered by David K 2 · 0⤊ 0⤋