HoxonLabs - 20-9-2024 at 07:26
Hey guys,
How can I get rid of chlorine gas?
It isn’t flammable, but is there anything a can mix it with to dispose of it quickly?
Any help appreciated.
bnull - 20-9-2024 at 08:58
Bubble it into an alkaline solution of bisulfite* (or was it thiosulfate?). Chlorine is reduced to chloride, which is easier to dispose of.
Edit: Thiosulfate can also be used. I suppose I should include equations. For bisulfite, $$Cl_2 + NaHSO_3 + 3~NaOH \rightarrow 2~NaCl + Na_2SO_4 +
2~H_2O.$$ For thiosulfate, $$4~Cl_2 + Na_2S_2O_3 + 10~NaOH \rightarrow 8~NaCl + 2~Na_2SO_4 + 5~H_2O.$$
*: With an "i", also known as hydrogensulfite, a salt of sulfurous acid. Not to be confused with
bisulfate, with an "a", which is a salt of sulfuric acid. The confusion between bisulfite and bisulfate pops up here occasionally.
[Edited on 20-9-2024 by bnull]
Sulaiman - 20-9-2024 at 10:08
Prior to relocating, I always had a 500ml bottle of thiosulphate solution (c1M) handy,
great for neutralising halogens, (squirt in bottle,flask etc.and shake)
and silver nitrate solution
(especially on skin/hands/worksurface before exposure to sunlight)