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Crazy_Chemist
Harmless
Posts: 19
Registered: 22-7-2019
Location: Europe
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Mood: Radioactive
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I think my most lethal chemical is HgCl2, I read recently about o mortality at 1 mg/kg (oral, rat). Mayby my (metallic) thallium is as poisonous at
that to. And the sodium azide is pretty toxic too. Thay all all marked vid H300 (Letal when swallowing).
Amateur chemist, just for fun!
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ManyInterests
National Hazard
Posts: 930
Registered: 19-5-2019
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I ordered some mercury switches so I can try to make some mercury fulminate. Mercury will probably be the single most toxic material I will be working
with, and I won't be working with any large quantities at a time. Like no more than 0.5 grams of mercury at a time. I will only crack open the
switches outdoors and I will keep a fan running near it to blow any fumes away. Same thing when turning the stuff into fulminate since that process
also reacts violently and creates lots of nitrogen oxide. I had some bad issues with nitrogen dioxide (and I will using an air purifier mask. It isn't
a gas mask, but it is better than nothing. I can direct it also to draw air from a different place than the extraction/reaction).
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B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
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Mood: Festive
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What do you mean by air purifying mask vs gas mask? What is your setup that allows you to draw air from some distance away from your reaction. Mercury
on its own poses limited risk. The reaction products from the production of mercury fulminate is a different story as I am sure you are aware. Do
report back with how you go.
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ManyInterests
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Posts: 930
Registered: 19-5-2019
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Quote: Originally posted by B(a)P  | | What do you mean by air purifying mask vs gas mask? What is your setup that allows you to draw air from some distance away from your reaction. Mercury
on its own poses limited risk. The reaction products from the production of mercury fulminate is a different story as I am sure you are aware. Do
report back with how you go. |
I got one of these:
https://www.amazon.ca/Rechargeable-Electrical-Purifying-Resp...
The reason why I didn't buy a gas mask is most of them aren't rated for inorganic gasses like nitrogen dioxide, and amazon was also asking for
professional credentials for their purchase.
What this allows is for air to be pumped in from elsewhere. The tubes aren't very long, but I can order extra tubes to make them longer, allowing me
to draw clean air from farther away. The mask is not airtight though.
It's good to not that elemental mercury isn't super dangerous, but given the bad experiences I had in the past with some stuff, I will still take
extra precautions.
I will definitely report on my mercury fulminate synthesis. I want to make the fulminate because I want to make my own gun primer mixtures.
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Sulaiman
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Posts: 3695
Registered: 8-2-2015
Location: 3rd rock from the sun
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just a small idea
I have about a kilo of Hg for my diy barometer/manometer that I store in a thick glass jar, which is surrounded by wadding in a plastic tub in a tin
can,
for small (<=1ml) experimental quantities
(eg from an accidentally broken thermometer)
I store Hg in disposable polyethylene pipettes which are easily heat sealed, and very durable.
I do very little Hg chemistry, partly due to the immediate toxicity risk,
but mostly due to waste handling problems.
CAUTION : Hobby Chemist, not Professional or even Amateur
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B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
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Mood: Festive
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| Quote: Originally posted by ManyInterests |
I got one of these:
https://www.amazon.ca/Rechargeable-Electrical-Purifying-Resp...
The reason why I didn't buy a gas mask is most of them aren't rated for inorganic gasses like nitrogen dioxide, and amazon was also asking for
professional credentials for their purchase.
What this allows is for air to be pumped in from elsewhere. The tubes aren't very long, but I can order extra tubes to make them longer, allowing me
to draw clean air from farther away. The mask is not airtight though.
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Sorry to provide this after you have already made your purchase, but do not rely too heavily on that. It is good that it has positive pressure but the
mask material is not impervious to gases and as you say it will not provide a proper seal. In Australia we can purchase a proper air purifying
respirator (APR) at the hardware shop, but no doubt you have explored that avenue where you are from. Ideally you would be looking for something like
this if your budget allows.
Full face
Or this if you are on a tighter budget.
Half face
Both of these APR types, if made by a reputable supplier are suitable for the gases you mentioned, provided you purchase the correct cartridge/s. Full
face is better because you get a better seal and your eyes and face are protected against splashes.
An ABEK cartridge will do you for most things in the home lab, including nitrogen dioxide, there are plenty of guides for this online that will tell
you specifically what each cartridge type provides protection for.
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