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Keras
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Then again, if you have some, you can make more by generating sulphur trioxide and dissolving it into your stash to make oleum that you can then
dilute to get 100% acid
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clearly_not_atara
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Quote: Originally posted by woelen  | | You can still buy 15% acid, cheaply (e.g. 25 liters of it for 50 euros or so). It can easily be boiled down to 70% or even 80%. Boiling it down to
90+% however is harder. |
I never saw the problem with commercial acid being 15% or 50% because it's only the part above 80% that is actually hard to dehydrate. But I wondered
anyway: can you just evaporate water from sulfuric acid? Can you avoid boiling?
According to Hornung and Giauque (attached), the vapor pressure of water above H2SO4*4H2O (about 58%) at 25 C is 4.795 mmHg = 0.64 kPa, while the
vapor pressure of pure water at 25 C is 3.16 kPa. So, at a relative humidity of less than 20%, H2SO4 will spontaneously concentrate all of the way to
58%!
That's not too likely, but even at a more realistic 50%-or-so humidity you should be able to get significant evaporation by just letting a bowl of the
stuff sit in the sun. If you go from 15% to 30% you've reduced the solution by nearly half. And that means a lot less volume in the boiling flask and
electricity consumed in the process.
Attachment: hornung1955.pdf (369kB)
This file has been downloaded 779 times
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learningChem
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Yes, you can concentrate H2SO4 and it's an interesting exercise in amateur chemistry, but the point is that having concentrated acid is now a 'crime'.
I just came accross this video https://www.youtube.com/watch?v=-J-6C6IhfIU
"How I’m dealing with the sulfuric acid ban "
Before watching I thought it was about workarounds for the 'ban' but the guy is actually destroying the acid he has at home. And that's how people who
'obey the law' are supposed to behave. So, no more concentrated sulfuric for amateurs.
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karolus28
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Just a reminder that in Poland sulfuric acid drain cleaners are still available even online
Hi, please read about exif data.
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Hexabromobenzene
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I was experimenting with the evaporation of a solution of sulfuric acid. I used an old cat litter box with an area of about 0.2 square meters.
The initial concentration of sulfuric acid is about 25%. Evaporation time 1.5 months. The temperature in the heated room is 24 degrees. This happened
in winter with temperatures in the open air down to -20 degrees Celsius (average -10)
Final acid concentration about 50% (density 1.5)
If you heat the container, you can probably evaporate sulfuric acid up to 70%. Heating cables are well suited as a heater for a plastic polypropylene
container.
Evaporation of strong solutions of salts or acids is an extremely long process. Trying on a container with heating will allow you to reduce its area
and reduce the evaporation time, as well as increase the theoretical evaporation limit.
P.S Initial volume acid was 3-3.5 liter. Final volume 1 liter
[Edited on 23-6-2022 by Hexabromobenzene]
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Fyndium
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| Quote: Originally posted by learningChem | | Well, looks like amateur chemistry is finished in the so called 'european union'. Also, I find it rather funny that this forum has a lot of people
willing to make excuses for tyranny. Then again, I guess unchecked political power is well aligned with reductionist materialism. And no, none of
these measures are about protecting a very small number of people from 'acid attacks'. |
Same goes with private gun ownership.
However, I'm not excusing tyranny. I exclusively stated that by making obtaining things a bit more difficult so the average dumbass is deterred from
readily accessing it will already cut off most of the harm.
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pesco
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| Quote: Originally posted by Xanax |
When I was procecuted 2014, I had two little boltles (each H2SO4 96% and HNO3 65 %) but the sulfuric acid was legal then, but not the nitric acid.
[/rquote]
I am very curious to know what happened, would you mind explaining how they found out and what happened after that?
[/rquote]
I have always been interessted in chemistry/physics and when I was a kid my dad had some pharmacies, so I could easaly get chemicals to build a little
home-lab in our house. When moving into an appartment I get rid of all dangerous chemicals. But I still collected radioactive sorurces. It was
innocents things like uraniumglass, clock-fingers with radium and americium from smokedetectors and stuff like that.
Then I did a less seriously experiments with radioactivity, to see "if I could split atoms" and se if I could "change the radiation", whith for
example beryllium.
Then I started arguing on a swedish discussionboard, then someone said and claimed that I was not allowed to post my interests, due it wasn't legal.
Of course it is legal! At least, I thougt! You can buy smoke-detectors legal everyware, old clocks an uraniumglass at the antique shop. Maybe the
beryllium was to poisounous to handle. The radiation in it isn't high and dagerous, unless you eat it.
So I wrote a mail to the Swedeish Radiation Saftey Authority and asked how much radioactive stuff it is allow to posess as a private person. But then,
thay wanted to came down and check out my apartment with geigercouters!
Then they had the police with them and wented thru my apartment and found some mystical bottles (50 ml H2SO4, and 50 ml HNO3). But the worst was that
I had also extrakted the toxins ricin and abrin from Ricinus communis and Abrus precatorius.
So, I was convicted for crime aganist the radiation safty law, which it was a little strange. My total radioactivity-collection may gave around 1-2
MBq total. Each clockfinger and each smokedetector gave about 35 kBq each. So my lawayer asked the wittness from the Radiation Saftey Authoroty how
much you are allowed at home. And after som thinking he came with 100 kBq. Thats a banana!
But for the ricin I was also suspected fore crime against the conventions of chemical weapon, and for som reason, the abrin was mentioned as a
biological warfare.
But I was only convicted for 1 (of 2) radiation crimes, 3 and 4 (the more seriously points with the chemical and biologigal warfare, I was acquitted.
Just on point 5 too, possesioning av ricin, abrin and nitric acid (not the sulfuric acid).
I got 13600 swedish kronor in fines, it is about $1650. But I went thru a forensic psychiatric examination, but I confessed it all, and behaved me
properly in court.
And... It was only 2 days before Breivik attacked Norway including with his homemade ammonium nitrate bomb, and they also foud two police uniforms in
my apartment. So I'll geuss the wouldn't exclude any possible terrorism.
[Edited on 2021-5-25 by Xanax] |
I know its old. Just for the record 
So, you had in your appsrtment:
1) sulfuric and nitric acids, precursors
2) very stronh poisons, ricin and abrin
3) collection of radioactive materials
4) 2 police uniforms
To be honest, I am very surprised that all you got was just $1.6k fine.
In most countries ( Europe/US) you would get way higher fine and potentially time (syspended?) for every single of these offences. Having them all
committed by one individual is probably world record in tempting luck.
Just to be clear. I am all against the totalitarian bans for chemicals, personal weapons or drugs.
1) chem ban.
Such ban would not stop criminals. Might only slow them diwn a bit, but at the tremendous cist to the public. The cost is rising prices for batteries
reconditionning, unblocking drains etc. In UK, the sulfuric ban was raised after some moron (jyst one AFAiK) splashed ot into his ex face. That's
wrong, but it is not sulfuric acids fault. If there was no acid he would splash petrol and light it or stub her with kitchen knife. Will petrol be
banned ? How about kitchen knifes? There are dozens of kitchen knife crimes committed every year in London alone.
2) personal firearm ban.
Criminals do get them regardless if the guns are legal or not. If the personal firearm is legal, then criminal will think twice before pulling it out
at the shop as soon after there might be a dozen of guns pointed at him. If they are illigal, then the criminal is a king - law abiding citizens won't
have any to defend themselves
3) drug ban.
Total bonkers. Group most interested in keeping drugs illegal is organised crime. The drugs are main income for them and they have a lot onfluence on
politicians. If you want to limit mafia's power then legalise drugs. Nothing will diminish mafia's power better than limitting their income. Another
thing, just think for yourself, if crystal meth becomes legal would you take a bit with every breakfast? Harsh as it seems, but drugs available to
geberal public means natural selection. Some idividuals would go, but that would strenghten the health of population ad a whole. Another aspect - what
is a "drug"? Us it a substance that causes harm or death? If so then why paracetamol is legal and LSD not? Quite a few people died from paracetamol
overdose while there was no single fatality in history from LSD overdose.
If you don't believe do a research. Personally I would never touch crystal meth, amfetaminę and such, but since LSD is mot addictive can't be
overdosed and could potantially cause harm only if used often then I would probaly try LSD once. Since it is illegal i have too much to lose to
experience it.
How about we change things a bit. Instead of the above bans introduce another one. Ban for regulations passed by idiots or people with shady
interests? Both of these groups we usually call politicians.
Such ban would definitely benefit a society.
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