Sciencemadness Discussion Board

Rongalite

Cheisenberg - 22-10-2015 at 03:11

Hello, I want to ask something all.
Now, ı would like to synthesize rongalit also named sodium formaldehyde sulfoxylate from reaction of sodium dithionite and formaldehyde. I did experiment in water as solvent but this couldn't crystallize, and also normally, when this synthesis is done, there are two product, first is OHCH2SO2Na this is rongalite, and second product is OHCH2SO3Na which has one more oxygen than rongalite. I have to seperate these. How can ı do this? Rongalite decomposes in acidic conditions, medium has to be alkali. And I want to convert second product to first one maybe by reducting this. If you help, ı will be appreciated. Thanks..

[Edited on 22-10-2015 by Cheisenberg]

morsagh - 26-10-2015 at 01:05

To crystallize product you should use exsiccator (easy to make with NaOH)

Cheisenberg - 27-10-2015 at 02:39

Thank you Morsagh, I tried it and took crystal but this takes time so much and as I said, there are two product, I have to seperate these to. Thanks again for your reply.