barryfol2
Harmless
Posts: 5
Registered: 28-11-2006
Member Is Offline
Mood: No Mood
|
|
NaHSO3
Hello,
would anyone have a link or a method for determining concentrations of NaHSO3?,
i am trying to make sodium bisulphite by passing sulphur gas stream through sodium sulphate, and elimintaing any oxygen
Thanks & Regards,
|
|
|
unionised
International Hazard
Posts: 5102
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
"i am trying to make sodium bisulphite by passing sulphur gas stream through sodium sulphate, and elimintaing any oxygen"
It won't work.
|
|
|
woelen
Super Administrator
Posts: 7976
Registered: 20-8-2005
Location: Netherlands
Member Is Offline
Mood: interested
|
|
Making NaHSO3 can be done by passing a stream of burned sulphur (sulphur dioxide) through a solution of NaOH or Na2CO3. Passing sulphur vapor through
Na2SO4 does not work, as unionised states. Sulfate ion is very inert, and it hardly can be used as oxidizer.
|
|
|
Bromine
Harmless
Posts: 45
Registered: 7-9-2006
Location: Slovenija
Member Is Offline
Mood: good
|
|
Easyest way is by bubbling SO2 into Na2SO3 solution.
|
|
|
barryfol2
Harmless
Posts: 5
Registered: 28-11-2006
Member Is Offline
Mood: No Mood
|
|
Thanks all,
to be honest, we are not sure if we have sodium sulphite or sodium sulphate in the effluent solution we are working with, as yet.
i will be passing so2 through the solution, which now thnking about it probably is sodium sulphite as it is an oxygen deficient environment (we also
get a lot of CO which might proove this)
does anyone have titration so that i can calc if i have sulphite and sulphate and if i then have sodium bisulphite following so2 addition?
i have a titration method for sodium sulphite where one adds sulphuric acid and titrates vs potassium iodate-iodide, using starch indicator,
any other ideas?
|
|
|
woelen
Super Administrator
Posts: 7976
Registered: 20-8-2005
Location: Netherlands
Member Is Offline
Mood: interested
|
|
That titration method is perfectly OK, as long as the solutions are not too concentrated. Sulphite is converted to SO2 by adding acid and this will
escape from the liquid if the concentration is too high. This will result in low measured values.
Also keep in mind that adding SO2 affects the titration effect. In fact, SO2, Na2SO3, and NaHSO3 all are equivalent in the iodate/iodide titration.
|
|
|
barryfol2
Harmless
Posts: 5
Registered: 28-11-2006
Member Is Offline
Mood: No Mood
|
|
Many thanks for the info,
regards,
|
|
|
cbfull
Harmless
Posts: 33
Registered: 24-6-2006
Location: OH
Member Is Offline
Mood: No Mood
|
|
Not sure if I remember this correctly, but I think I remember seeing a toilet bowl cleaner having sodium bisulfite listed as the main (perhaps only?)
ingredient.
Might be worth a look next time you are shopping.
|
|
|
unionised
International Hazard
Posts: 5102
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
More likely bisulphate than bisulphite.
|
|
|
Chris The Great
Hazard to Others
Posts: 463
Registered: 29-10-2004
Location: Canada
Member Is Offline
Mood: No Mood
|
|
I've found bisulfite as a iron remover. I am pretty sure it isn't super pure, since it reeks of SO2, and pure NaHSO3 has a much, much weaker smell
(ie, you need to take a good sniff to tell it's there, while I open my iron remover and it reeks without even trying to smell it).
|
|
|
YT2095
International Hazard
Posts: 1091
Registered: 31-5-2003
Location: Just left of Europe and down a bit.
Member Is Offline
Mood: within Nominal Parameters
|
|
Campden tablets contain it also, you can buy them easily enough at a Wine making shop.
\"In a world full of wonders mankind has managed to invent boredom\" - Death
Twinkies don\'t have a shelf life. They have a half-life! -Caine (a friend of mine)
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
