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Topic: Quick question about bisulfite adducts  (Read 6318 times)

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Offline limpet chicken

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Quick question about bisulfite adducts
« on: March 25, 2006, 09:16:02 PM »
Just a real quick simple question here, is it possible to substitute metabisulfite salts for bisulfites, when forming an adduct with an aldehyde group?

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Offline woelen

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Re:Quick question about bisulfite adducts
« Reply #1 on: March 26, 2006, 10:47:05 AM »
In aqueous solution, metabisulfites and bisulfites can be exchanged without problems. E.g. sodium bisulfite is NaHSO3, sodium metabisulfite is Na2S2O5. The bisulfite could be written as Na2S2O5.H2O. Chemically speaking their solutions react precisely the same way.
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Offline pantone159

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Re:Quick question about bisulfite adducts
« Reply #2 on: March 26, 2006, 01:33:06 PM »
One mole of metabisulfite becomes exactly two moles of bisulfite when you dissolve it water.
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