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Does synthesizing Sodium Chlorate NaCl03 produce any harmful fumes if i electrolyize the solution while it is hot? Answered

Does synthesizing Sodium Chlorate NaCl03 produce any harmful fumes if i electrolyize the solution while it is hot? I saw on wiki if you heat the solution while electroyzing the solution the reaction is NaCl + 3H2O = NaClO3 + 3H2 but if it isnt hot the reaction is 2NaCl + H2O = NaClO + NaCl + H2O , NaClO (Sodium hypochlorite) is what is used in household bleach. DOES THE SAFE VERSION PRODUCE CHLORINE FUMES?



2 years ago

As jackelope suggested chlorine gas is the hazard. Chlorine is not a "no big deal" thing though, regardless of anyone here dismissing it as such. It forms hydrochloric acid on recombination in an aqueous environment (like your nasal linings and lungs)


2 years ago

Of what use is sodium chlorate ?

BTW the antidote to chlorine poisoning is to inhale dilute ammonia. Which I learned as a HS student in chemistry class when we were electrolyzing salt water and collecting gas inverted bottles.. Chlorine makes you feel like a massive sinus infection affecting eye mucus (hard to see well).. So that when I went to the reagent shelf.. With a strong case of chlorine poison and planning to inhale a goodly amount of dilute ammonia whiff, I reached for the ammonia but in a haze mistakenly took the concentrated reagent bottle and...

My memory is blank from that moment except to recall that my nose was noticeably totally clear that entire summer and I have avoided salt water electrolysis to this day.


2 years ago

Don't know but for some reason I see firworks and explosions....

Jack A Lopez

2 years ago

Uh... wait... which one's the safe version? The safe version of what?

I think pretty much any electrolysis of aqueous sodium chloride is going to give some chlorine gas at the anode, no matter what the temperature, or pH, there.

However chlorine gas is not that bad. I mean, just run your setup outside, or with a fan near an open window.

By the way, when using Wikipedia to glean chemistry knowledge, it is often helpful to read more than just one article. The articles related to your topic will have additional clues too.

For example, from the article for "Chloralkali process",


A membrane cell is used to prevent the reaction between the chlorine
and hydroxide ions. If this reaction were to occur the chlorine would be
disproportionated to form chloride and hypochlorite ions:

Cl2 + 2OH− → Cl− + ClO− + H2O

Above about 60 °C, chlorate can be formed:

3Cl2 + 6OH− → 5Cl− + ClO3− + 3H2O

Because of the corrosive nature of chlorine production, the anode
(where the chlorine is formed) must be made from a non-reactive metal
such as titanium, whereas the cathode (where hydroxide forms) can be made from a more easily oxidized metal such as nickel.

So you see, the only reason we're getting these higher chlorine oxyanions,


are because of these reactions between chlorine gas and hydroxide ions.

In fact, it might even make sense to just bubble chlorine gas through hot sodium hydroxide, as a way to make chlorate ions.

Also BTW, did you know sciencemadness.org has a wiki now? It's true! I've seen it. Here:



The reason sciencemadness.org will be helpful to you is because their forums are full of discussions about how to do stuff exactly like this, e.g. synthesize chlorates using homemade equipment.