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What will breathing air in an enclosed space with elevated hydrogen levels do to me?

I'm making rust via electrolosis (with tablesalt enhancing), the water level has dropped about half an inch, and the liquid is a heavy black Fe3O4 sludge, meaning that there has been alot of hydrogen released. Basically, what are the signs/symptoms of hydrogen poisoning?

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Ro]x[as7 years ago
Trust me, if you've got harmful levels of hydrogen, you'll know it. Headache, ringing in the ears, skin turning blue, nausea, and eventually unconsciousness and death. Basically all the symptoms of asphyxiation. Mind you, you're not likely to achieve a high enough concentration to do that unless you're making it in the closet, and orksecurity is right, you'll be in danger of explosion or fire before biological problems arise.
The Ideanator (author)  Ro]x[as7 years ago
Alright, well Ive got one of those, thanks!
Kiteman7 years ago
Strike a match.

Blow it out.

If you explode, you've breathed too much hydrogen - get some fresh air.

Actually, H2 is so light and hard to restrain, it would take very little in the way of ventilation to rid your workspace of it altogether. Open a window a crack, or flap the door occasionally.
The Ideanator (author)  Kiteman7 years ago
Well, this is good news! I can run my EC all day and night!
orksecurity7 years ago
If it's high enough to make a difference, methinks you're more at risk from explosion hazard than from biological effects.
AFAIK its not actually toxic, but it IS an asphyxiant. The lower explosive limit in air is about 5%. Steve
The Ideanator (author)  steveastrouk7 years ago
Ahhh, ok. good to know!
lemonie7 years ago
Hydrogen forms explosive mixtures over a wide range of concentrations - that's a bigger concern. L