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i real don't see whats so bad about stainless for this application. most electrolysis machines ive seen have either used it for the entire thing or just the electrodes. where did the idea of the use of stainless to be toxic come from? the only worry i would see is if sodium chloride or a similar catalyst with chlorine in it is used.

mild steel would corrode, not great stuff to use but it will make hydrogen.

Stainless steel contains chromium, which is pretty toxic. I've heard that the electrolisis dissolves it into the water. It still confuses me though, because metals cannot chemically bond with each other, so when stainless is scratched surely tiny fragments of chromium come out too. And we use stainless for cutlery so I guess there isn't THAT much chromium in it. Hmmm

well yer it cant be to bad if its been done many times before and i cant find anything about it on the web about it.

im confused when you say "chemically bond"

metals cannot chemically bond with each other,

metals are bonded and when to metals bond together its called a metallic bond

http://en.wikipedia.org/wiki/Metallic_bond

anyways no problems it obviously not a hazard. back on topic,

im gonna make one of these about the size of a coke can and use it on my hybrid.

What I mean is that when you mix two metals together, you don't get a brand new substance with completely new properties, instead you get a mixture of two metals. They are still septerate metals mixed together, no chemical reaction has taken place. Eg an alloy containing iron will be magnetic, whereas some non metallic chemicals (like hydrogen and water) change completely when chemically mixed. Hydrogen is flammable, oxygen helps things burn, a mixture of hydrogen and oxygen is highly explosive, but once the two are chemically combined become water, which is used to put out fires.

yer ok i forgot about alloys there for a sec, its k i understand and still think there is not any real hazard in place wen using it for these purpose's.

Probably not, just don't go drinking the leftover water

Carbon electrodes can damage for corrodation, you can overhelp the problem by solving some magnesiumcarbonate in the water. Electrodes that won't corod are the two loaddioxide plates from a LOADED car battery.
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Basically, when stainless steel is scratched, instead of the iron corroding, the chromium in the alloy does, and this creates a protective cover which sticks very strongly to the alooy. Iron oxide doesn't stick and so falls off, making space for more corrosion.

Stainless steel electrodes are bad, because when chromium is oxidised (by the electrolysis) it creates hexavalent chromium, which is highly carcinogenic.

Car battery electrodes are workable, carbon is great but needs replacing occasionally, and platinum is excellent (it doesn't corrode) but very expensive.

I usually just use an iron nail or pencil lead, which works fine for home applications.

+1, avoid salt (common salt).

I know for a fact it makes chlorine, and by my scientific math that means there's an equal amount of sodium left somewhere else.

Apparently baking soda can make carbon monoxide, but I never had a problem with it. And yes, using an alloy (SS) will result in chromium deposits.

Pretty good, though a bit ghetto. Might have to go rip apart some 6v batteries.

Ad at a guess, if you were game enough you could pull apart a car battery and use the plates from that.

The sodium becomes part of sodium hydroxide (technically it just stays as Na+ in solution). Sodium chloride will do fine, but is best done outdoors. It isn't dangerous really unless you are deliberately inhaling it.

deathholm wrote:I've got some old anodes from an old pool chlorinator that are made of silver alloy. Apparently the best metals are the most non-reactive ones. Platinum is supposed to be the ideal because it does not react whilst being electrolised.

use lots of KCl for electrolyte, use the anode as an anode, and make hydrogen and KClO3 at the same time. you will get pure-ish hydrogen (contaminated with chlorine, so bubble through water) and a white precipitate. this will be KClO3, so you can make a chlorate candle or somethingyeah ring... we know what you will be making.Google chlorate cell for more info.

that's pretty cool, i wonder what the police would think if they saw that in your house, they'd probably think it some kind of meth lab lol, have fun with that and don't blow up

covey12 wrote:that's pretty cool, i wonder what the police would think if they saw that in your house, they'd probably think it some kind of meth lab lol, have fun with that and don't blow up

oh, the cops won't be getting anywhere near my house...
lol, and it would be on my back deck. Even I (who burns magnesium in his bedroom) won't make chlorine and hydrogen in my house (parents won't let me, either)

Orpackrat wrote:Stainless steel for the electrodes, I heard that is not the best material to use and if you do, you can poison yourself with the gasses. Mild steel is the best stuff i've heard.

You are right about the usage of a stainless steel for the electrodes which can affect our health. It may contain some poisons that can be mixed to the water in the pipe. Mild steel is necessary for our health.

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