Monoamine
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How to make the air in my lab less oxidizing??
The air quality in my workspace is pretty terrible, it rusts everything in a matter of days! So it must be extremely oxidizing.
I could really need some ventilation in the space, but I'm not sure how do to it. Ideally, I would want one ventilation for the whole room, and one
that I can attach to my (ductless) fume hood, so that anything that does't get stopped by the filter (i.e. H2) will be sucked outside.
Does anybody know a good way to do this?
Also, in the mean time, is there are anything I can spray in order to "reduce" the air and make it less oxidizing?
Any advice would be greatly appreciated!
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charley1957
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Sounds to me like you’ve got something not well sealed. I had the same problem, as I had some chemicals stored in a steel cabinet which continually
rusted, dropping rust all over everything inside and on the countertop when I’d open the door. Turns out I had a not-well-sealed container of a
chlorine compound that was being exposed to the air. After I repackaged this material in an airtight container my rusting problem was solved.
So check your chemical storage for oxidizing materials which may not be well sealed. I’ll bet you’ll find your problem.
You can’t claim you drank all day if you didn’t start early in the morning.
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Sulaiman
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Rusting immediately makes me think of HCl(g) ,
Assuming that you have HCl(aq) test for escaping vapour using ammonia gas,
just opening a bottle of ammonia solution nearby will cause white ammonium chloride 'smoke'.
If there are HCl fumes, options are:
Get a better sealing bottle
Dilute to azeotropic (c20.2% w/w) to reduce HCl off-gassing.
Store HCl in a shady well ventilated place, preferably outdoors.
Edit: the answer above is better - many compounds off-gas.
eg TCCA pool chlorine.
The ammonia trick should reveal Halogen gasses.
(I store ammonia solution in the same plastic tub as hydrochloric acid, hopefully each partially neutralising fumes from the other)
If no ammonia solution is available,
bakers ammonium bicarbonate raising agent may be available.
[Edited on 4-8-2023 by Sulaiman]
CAUTION : Hobby Chemist, not Professional or even Amateur
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Texium
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Thread Moved
4-8-2023 at 11:54 |
Monoamine
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I suspect, the bromine in my fridge and the thionyl chloride next to it are partially the culprits. I've tried sealing them into glass vials, but
there's too much of it to seal everything.
I have some litmus paper lying on a bench and when I come to it after a few days it's bright red. I'm slightly freaking out tbh.
But it's aight, I guess. I ordered a ventilator that I can build into the roof. Hopefully that will fix it...
Edit: Thank you for the ammonia advice. I will go do try that.
[Edited on 10-8-2023 by Monoamine]
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Lionel Spanner
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Depending on the age and condition of the building and where your lab is located in it, it could also be high humidity.
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Johanson
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"Does anybody know a good way to do this?"
First, your location says "Sweden" so I assume it's cold outside and that's why you don't just crack open a couple windows on opposite sides of the
room; you don't want to frickin' freeze.
Just about every standard in the U.S. - Internat'l mechanical code, ASHRAE, OSHA, etc - call for a minimum of 4-12 room-air-changes per hour in
laboratories, just to accommodate people, not to remove hazards. Calculate your room volume, and that will give you the minimum m^3/hour necessary.
Every cubic meter you discharge will add to your heating/cooling bill, but that's the way it goes. If your room air is turning litmus paper bright
red, I wouldn't want to work in it for long periods of time
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Metacelsus
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Yeah it's probably some HCl or other halogen-containing gas. In high school I made all my dad's tools rust in the garage when I did an experiment with
HCl, he was NOT HAPPY.
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Sulaiman
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Balancing comfort (heating cost) and safety in winter is difficult.
In my uk lab/shed there is always some ventilation,
during winter an infra-red heater nearby helps a lot.
I used a portable electric one with 3 bars so I can balance cost (400W per bar/element) vs comfort.
I suppose that UK/EU heating costs have risen significantly since I was home due to the idiotic/suicidal anti-Russian sanctions?
CAUTION : Hobby Chemist, not Professional or even Amateur
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Johanson
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Sulaiman: "I suppose that UK/EU heating costs have risen significantly since I was home due to the idiotic/suicidal anti-Russian sanctions?"
Is it legal to install a coal burning stove? There's almost more coal under the (UK's) king's bathroom than the rest of the world combined. Is that
verboten now?
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unionised
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Quote: Originally posted by Johanson  | Sulaiman: "I suppose that UK/EU heating costs have risen significantly since I was home due to the idiotic/suicidal anti-Russian sanctions?"
Is it legal to install a coal burning stove? There's almost more coal under the (UK's) king's bathroom than the rest of the world combined. Is that
verboten now?
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You can get coal, but it's not cheap, so why bother?
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DraconicAcid
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| Quote: Originally posted by Sulaiman |
I suppose that UK/EU heating costs have risen significantly since I was home due to the idiotic/suicidal anti-Russian sanctions?
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Yeah, it would be far less idiotic and suicidal to just let Putin take everything he wants, from Ukraine to East Berlin.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Texium
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| Quote: Originally posted by Metacelsus | | Yeah it's probably some HCl or other halogen-containing gas. In high school I made all my dad's tools rust in the garage when I did an experiment with
HCl, he was NOT HAPPY. |
Same! Mine still gives me crap about it sometimes. One day when I have real adult
money, I'll buy him a nice new set of tools, then he won't be allowed to complain anymore. 
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averageaussie
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yikes, bromine just leaking.
[Edited on 16-8-2023 by averageaussie]
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