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Rainwater
National Hazard
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Registered: 22-12-2021
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Quote: Originally posted by gransolo12  |
borohydride has been added to a solvent such as ipa, does it produce hydrogen gas in a short burst, or over a prolonged period?
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You should perform some test tube scale reactions so you can measure the these things.
Here is a useful video about how to safely collect and accurately measure gases in a test tube reaction
https://youtu.be/rVY4WwKMOjQ
"You can't do that" - challenge accepted
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gransolo12
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thank you. will check this out
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HoxonLabs
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Just fill a balloon or two up with the hydrogen, and then burn it. If you add a bit of oxygen the combustion will look very cool but be careful.
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zed
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Back when I was young and intrepid, I used to dispose of hydrogen gas by venting it outside. And, how did I get it outside in the first place? Set
up an water/aspirator pump to create vacuum, the water entrains the gas and performs a preliminary dispersal. Set it up away from your domicile in an
open area. Set-up under your eaves is not prudent, as Hydrogen might rise, concentrate, and accumulate there.
Alas, in those glamorous days of yesteryear, water bills were negligible expenses. Nowadays, running such an aspirator might be prohibitively
expensive. Though water is plentiful hereabout, it is not inexpensive. This has caused some folks to recycle aspirator water via electric water
pumps. Which interferes with the safe, elegant, simplicity of original set-up.
You just turned on the water, and your troubles were whisked away.
Perhaps you should buy a farm in order to make use of excess water discharges. A real industrial operation might do such thing. Waste not, want not.
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jackchem2001
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If you choose to flare a gas as you are producing it (by say, directing the flow along a glass tube and igniting the end) you better be damn sure the
atmosphere inside the apparatus is above the upper flammability limit of H2 (75%). This means you should pump N2 through the setup, or at the very
least leave whatever is generating hydrogen running for a while before ignition.
In my opinion flaring is very inadvisable in any case. At a laboratory scale, the quantities of flammable gases produces are small and do not need
flaring. Simply running the H2 outside with tubing is a much better solution. It will immediately be diluted to below the lower flammability limit
(4%!! very low - must not be released indoors) and poses no hazard. A vacuum is an interesting suggestion but in my experience is not needed. Gases
have very low pressure drop, so even long exhaust tubing will not significantly raise the pressure inside the apparatus (which would lead to joints
getting blown apart/pressure explosion).
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jackchem2001
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| Quote: Originally posted by gransolo12 | | would diluting the area where h2 gas is with argon or nitrogen in equal parts reduce its explosiveness and flammability? |
https://youtu.be/f2ItJe2Incs
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