Wrecking Bereserker
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Hazardous chemicals
I always thought Copper Sulphate was just a normal good boy but recently i heard it is toxic also is it true i mean any bad experiences?
Wikipedia says recommended exposure limit is 1mg/1m3 isn't that a very small amount?
Just about everything i read is saying that they are either toxic/carcinogenic/corrosive/hazardous if most of the things are this way how come average
humans are not affected by the environment m?
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Schleimsäure
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Don't take the hypersensitive "everything is soooo evil and nasty" attitude of these days too serious.
Just apply common sense where it's due.
And don't be afraid of copper sulphate, just don't eat a kilo of it, which would not be possible anyway. Copper sulphate solutions were used to
ingnite nausea in case of real digestive intoxication. I have still a 1960's hobby chemistry book from the former GDR where it is recommended to have
a solution in your emergency lab med kit.
My brother told me once he thoght he intoxicated himself and took a good sip of CuSO4 solution in the 70s or so. He vomitted like there is no
tomorrow.
[Edited on 4-4-2019 by Schleimsäure]
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Ubya
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everything is toxic in the right amounts, if you drink 7 liters of water in one session you probably die. i'm not saying to disregard every safety
warning, just use common sense, for example don't drink heavy metal salts (copper sulphate for example), don't put your dirty hands to you face (eyes
or mouth), etc
when you go to the restaurant you don't find a warning label near the plate that says "warning, sharp pointy metal objects can cause damage to flesh,
eyes and major blood vessels if used incorrectly"
but you'll find the warning label on rat poison that says "don't eat it"
common sense, simple, if you have doubts, ask, simple as that
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feel free to correct my grammar, or any mistakes i make
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brubei
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Several pathologies have been identified with worker who are exposed to high concentrations of CuSO4 particles. However CuSO4 is massively used in
agriculture, even for feeding animals. So you can throw it in the sink without worrying, just protect yourself (mask) if you use fine powder for
several days.
Edit: cheap copper salt may contains Nickel who is much toxic
[Edited on 4-4-2019 by brubei]
I'm French so excuse my language
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RedDwarf
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Copper sulphate (combined with lime and water iirc) is "Bordeaux mixture" which was a permitted fungicide for fruit and veg with "organic" farming
and gardening. I wouldn't worry about the safety, although that's probably your greatest risk of significant ingestion, but it does demonstrate that
the organic label in farming is often far from what people suspect it to mean.
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wg48temp9
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Quote: Originally posted by Wrecking Bereserker  | I always thought Copper Sulphate was just a normal good boy but recently i heard it is toxic also is it true i mean any bad experiences?
Wikipedia says recommended exposure limit is 1mg/1m3 isn't that a very small amount?
Just about everything i read is saying that they are either toxic/carcinogenic/corrosive/hazardous if most of the things are this way how come average
humans are not affected by the environment m? |
As I said previously you have look at the context of any number. In this case the 1mg/1m3 is the time weighted average maximum permisible limit in the
work place for a worker over his working life, say 50 years, 8h a day 5 days a week 50 weeks per year. That's about 4m3 air breathed each working day
say 4mg each working day. Which is about 12kg of copper over a working life time of 50 years. Thats a lot of copper. 1mg/m3 is less than 1ppm which
is much smaller than 10ppm of chlorine in your previous post. However the maximum permissible limit (long term) for chlorine is probably much less
than 1ppm.
So you could say that when breathed in long term, compared to chlorine copper is a lot less poisonous than chlorine.
[Edited on 4-4-2019 by wg48temp9]
I am wg48 but not on my usual pc hence the temp handle.
Thank goodness for Fleming and the fungi.
Old codger' lives matters, wear a mask and help save them.
Be aware of demagoguery, keep your frontal lobes fully engaged.
I don't know who invented mRNA vaccines but they should get a fancy medal and I hope they made a shed load of money from it.
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Herr Haber
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Bordeaux mixture is not permitted anymore in the EU ! Mushroom farms stopped using it long before though.
Happened around the same time when DCM and borax compounds started to disappear.
In reality (as it was the case with Ammonium Nitrate) agricultors still have massive amounts and are more than willing to sell.
In all these cases the main reason was not toxicity to humans but environmental concerns.
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MrHomeScientist
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Copper ions are pretty toxic to aquatic life, so I always react any copper solutions with baking soda rather than pouring them down the drain. Then
you get basic copper carbonate which is a nice starting point for other copper salts. If you just want to get rid of it, heating with a propane torch
will decompose it to black copper oxide which is even less hazardous. Or mix that copper oxide with carbon, and reclaim your copper metal!
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unionised
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IIRC the limit set by WHO for copper compounds in drinking water is due to taste, rather than toxicity.
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fusso
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What
taste is Cu2+?
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Abromination
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It is bitter sweet with a hint of a chalky metallic flavor.
List of materials made by ScienceMadness.org users:
https://docs.google.com/spreadsheets/d/1nmJ8uq-h4IkXPxD5svnT...
--------------------------------
Elements Collected: H, Li, B, C, N, O, Mg, Al, Si, P, S, Fe, Ni, Cu, Zn, Ag, I, Au, Pb, Bi, Am
Last Acquired: B
Next: Na
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j_sum1
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Metallic, bitter, mouth-drying and gag-inducing. You will want to spit out your tonsils.
Gargle a little copper sulfate and you will see what I mean.
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Abromination
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| Quote: Originally posted by j_sum1 |
Metallic, bitter, mouth-drying and gag-inducing. You will want to spit out your tonsils.
Gargle a little copper sulfate and you will see what I mean. |
Thats what I was trying to describe, just couldnt find the right words. Its almost like getting a drop of dilute hydrogen peroxide on your tounge but
with a metallic taste.
List of materials made by ScienceMadness.org users:
https://docs.google.com/spreadsheets/d/1nmJ8uq-h4IkXPxD5svnT...
--------------------------------
Elements Collected: H, Li, B, C, N, O, Mg, Al, Si, P, S, Fe, Ni, Cu, Zn, Ag, I, Au, Pb, Bi, Am
Last Acquired: B
Next: Na
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fusso
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That sounds gross and disgusting, I think I better not let it enter my mouth
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unionised
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Most people have found out what Cu++ ions taste like by handling copper coins, then eating stuff without washing their hands.
People generally learn to wash their hands.
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fusso
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| Quote: Originally posted by unionised | Most people have found out what Cu++ ions taste like by handling copper coins, then eating stuff without washing their hands.
People generally learn to wash their hands. |
WTF thats fucking dirty!!!
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woelen
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Thread Moved
23-5-2019 at 11:40 |
Fantasma4500
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of what i recall it may cause anger issues, copper is modified by cadmium, i personally have experience with it affecting aggression through welding
smoke from solid core wire, such wire is electrocoated with copper, but manganese in this wire is alloyed with 0.4% manganese usually (google
manganism)
copper is necessary to balance out zinc in the body and vice versa, i wouldnt be very worried about copper but excess nutrients would typically act
neurotoxic, leading to neurodegeneracy
ive been exposed to decent bunches of copper species also from dehydrating copper sulfate and even been in a cloud of copper smoke with no seeming
effect on my health
i would say - not very worrying unless were talking chronic exposure
it can in large doses cause vomiting, like a teaspoon of copper sulfate
it gave me mild nausea the times i supplemented with copper in the form of copper acetate (appropriate dosage, heavily diluted)
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teodor
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According to wikipedia data for LD50 of ethyl alcohol and Cu2SO4 it seams that 20% Cu2SO4 (concentrated) solution has the toxicity of whiskey.
So, one can use this simple whiskey method to understand that data.
(Somebody have fear to keep even 10 bottles of it)?
For more toxic compounds you probably can use the aspirin method.
[Edited on 29-8-2019 by teodor]
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