How to make Sodium hydroxymethanesulfonate

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easypeasyac
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How to make Sodium hydroxymethanesulfonate

Post by easypeasyac »

Hello;
I am trying to synthesize sodium hydroxymethanesulfonate from formaldehyde and sodium metabisulfite.

I know that when sodium metabisulfite dissolve in water it gives sodium bisulfite
Na2S2O5 + H2O → 2 Na + 2 HSO3

Then how can i synthesize sodium hydroxymethanesulfonate with 37% formaldehyde solution.

Thank you.
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ChenBeier
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Re: How to make Sodium hydroxymethanesulfonate

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You mix equimolar amount of bisulfite powder and formaldehyde. Let it crystallize under a good ventilated hood.

NaHSO3 + CH2O => HOCH2- SO3 Na

It can be produced also as byproduct from Dithionite

https://en.m.wikipedia.org/wiki/Rongalite
Mnaiosa
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Re: How to make Sodium hydroxymethanesulfonate

Post by Mnaiosa »

The reaction of sodium metabisulfite with water yields sodium bisulfite, as I am aware.
run 3
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ChenBeier
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Re: How to make Sodium hydroxymethanesulfonate

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Thats is written above already.
easypeasyac
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Re: How to make Sodium hydroxymethanesulfonate

Post by easypeasyac »

ChenBeier wrote: Wed Mar 20, 2024 3:37 amIt can be produced also as byproduct from Dithionite

https://en.m.wikipedia.org/wiki/Rongalite
Dear ChenBeier thank you for your reply.
Rongalite is a Sodium hydroxymethanesulfinate, I am trying to produce sodium hydroxymethanesulfonate.

Can I produce sodium hydroxymethanesulfonate from dithionite?
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ChenBeier
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Re: How to make Sodium hydroxymethanesulfonate

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Read again the Article, you get both.
easypeasyac
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Re: How to make Sodium hydroxymethanesulfonate

Post by easypeasyac »

ChenBeier wrote: Wed Mar 27, 2024 5:06 am Read again the Article, you get both.
Got it @ ChenBeier.

Na2S2O4 + 2 CH2O + H2O → HO-CH2-SO3Na + HO-CH2-SO2Na

Molecular weight of Na2S2O4=174.1071 g/mol
Molecular weight of CH2O=30.0260 g/mol
Molecular weight of HO-CH2-SO3Na =134.0869 g/mol
Molecular weight of HO-CH2-SO2Na =118.0875 g/mol

Then if I dissolve 100 grams Na2S2O4 in water and add 34.4914 grams CH2O I will get 77.0140 grams HO-CH2-SO3Na and 67.8246 grams HO-CH2-SO2Na
ChenBeier wrote: Wed Mar 20, 2024 3:37 am You mix equimolar amount of bisulfite powder and formaldehyde. Let it crystallize under a good ventilated hood.

NaHSO3 + CH2O => HOCH2- SO3 Na

It can be produced also as byproduct from Dithionite

https://en.m.wikipedia.org/wiki/Rongalite

Na2S2O5 + H2O → 2 Na+ + 2 HSO3

Molecular weight of Na2S2O5=190.1065 g/mol
Molecular weight of NaHSO3=104.0609 g/mol
Molecular weight of CH2O=30.0260 g/mol

So if I dissolve 100 grams Na2S2O5 in water, I will get 109.4764 grams NaHSO3

Then I need to add 31.5886 grams formaldehyde to the mixture and I will get 141.065 grams CH3NaO4S

Is my calculations right :roll:
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ChenBeier
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Re: How to make Sodium hydroxymethanesulfonate

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Correct
easypeasyac
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Re: How to make Sodium hydroxymethanesulfonate

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ChenBeier wrote: Tue Apr 02, 2024 7:53 amCorrect
Thank you 8)

What about commercial formaldehyde solutions? Just noticed almost every brand have methanol in it as a stabilizer. Is methanol affect this reactions? :roll:
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Re: How to make Sodium hydroxymethanesulfonate

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No it doesn't effect.
easypeasyac
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Re: How to make Sodium hydroxymethanesulfonate

Post by easypeasyac »

ChenBeier wrote: Tue Apr 02, 2024 11:25 pm No it doesn't effect.
Thank you
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