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Topic: Stability of aquaous l-ascorbic acid  (Read 3473 times)

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Offline firecard

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Stability of aquaous l-ascorbic acid
« on: June 07, 2009, 01:34:17 PM »
Does anyone know the stability of aquaous l-ascorbic acid for storage?

Say, storage at 25oC and the solution is saturated.

Do adding of EDTA Calcium Disodium help to stabilise it?
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Offline wpenrose

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Re: Stability of aquaous l-ascorbic acid
« Reply #1 on: June 07, 2009, 03:50:55 PM »
One day for a standardized solution; seven days for an approximate solution, eg, "5% ascorbate". EDTA will prevent metal-catalyzed oxidation; make sure it doesn't interfere with the intended use.

Dangerous Bill
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