Making Paris Green A Toxic Green Pigment
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- Опубликовано: 5 окт 2024
- In todays video an historic and toxic pigment called "Paris green" will be prepared. Paris green is an arsenic based pigment and thus extremely toxic. It looks beautiful though.
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I found a quarter pound of Paris green in a dumpster one day. It’s in a paper canister and the warning label on it says to eat three egg yolks, then take sodium bromide and opium to treat poisoning. Needless to say, the canister is very old
That’s really cool!
Go to the drugstore and tell them that you need opium, for ...ummm... reasons.
In the 19th century it was widely used to paint wood garden trellises and wood garden benches. Monet painted his wooden bridges and wood shutters with it at his Giverny, France waterlily garden. In Paris, boxes for shops were covered in Paris-green-painted paper. I suspect that Paris Green had the added benefit of keeping nuisance critters at bay that might eat paper and wood.
Stuff like that should be preserved, way too cool.
That is actually precious, the reason we cannot produce very good blue colors on fireworks is because we cannot find paris green, it can actually make the best blue colors out there.
User Pyrophoria has some excellent videos on pyrotechnic colors, and covers Paris green and suitable substitutes - ruclips.net/video/cEj8kweelaw/видео.html
I was about to mention that. It's likely that Paris green is still found in fireworks that come from China; it's a good idea to wash your hands thoroughly after handling them, and to avoid breathing the gaseous byproducts of the combustion. Most people aren't aware of how toxic some of that stuff is.
@@bellowphone Because now it's expensive i don't think the Chinese use it at all if not a little. I have never seen a decent blue from them anyway. In any case after the combustion the problem is reduced.
Pharaoh's Serpent is another type of toxic firework we innocently played with, when we were kids. It was made with mercury thiocyanate. Another one was cigarette loads, which came in a little tin, and I found out later that the powdery white substance which would get all over our fingers, was lead azide. Not only that, but when a loaded cigarette explodes in a person's face, he generally gasps in a big breath of the exhaust gases. But what did we know?
Paris green has become extremely over rated. You can absolutely make excellent blue formulas using more available modern blue colorants. The Italians have beautiful blues and they use copper oxide red/black, and Chlorate
My grandfather was accidentally poisoned with Paris green on an onion he grabbed from a neighbor's garden when he was a kid. Luckily he survived it, otherwise I wouldn't be here!
crazy that it was even used as a pesticide on food
It was used as an insecticide
3:15 The vibrant Paris green begins to come through and glow beautifully
In the 19th century it was widely used to paint wood garden trellises and wood garden benches. Monet painted his wooden bridges and wood shutters with it at his Giverny, France waterlily garden. In Paris, boxes for shops were covered in Paris-green-painted paper. I suspect that Paris Green had the added benefit of keeping nuisance critters at bay that might eat paper and wood.
You forgot to add the chronic toxicity label. :)
I've never seen this pigment but I sure read a lot about it. Maybe I'll make it this summer.
I see it everyday
This was probably the most used pest controlling chemical for the greater part of the XXth century here, but it is now virtually unobtainable, for good reasons, I would say! Since you have acces to arsenic, you might try making some cacodyl derivatives.
For cacodyl stuff I´d need to make more As2O3 before as there´s only a little left. Might try though once a way to produce arsenic oxide in bulk was found.
Thallium sulfate was also used long time ago. Scary stuff.
@@user255 lead hydrogen arsenate too (what could possibly go wrong)
@@THYZOID Another fantastic video! What an awesome channel.
I'd love to see cacodyl derivatives made too. I used to have around 250g of arsenic trioxide many years ago, along with many other dangerous chemicals. My older brother worked at a chemical and biological supplies company and the boss didn't have a clue about chemistry, and he used to say to me "help yourself to the chemicals" whenever I used to help him out. Those were good times!
I wish really that I'd made cacodyl. I've never seen anyone else try it. In fact I can't even find any images of what the reaction products of heated arsenic trioxide and potassium acetate looks like.
There’s also Scheele’s green, yet another green arsenic compound. Paris green was the “new and improved” green arsenic pigment
I also planned to make this pigment but I need to make more As2O3 first
@@THYZOIDI’ve heard that Scheele’s green is less light- stable than Paris Green. Any observations on color differences between the two?
@@TootlesTart I have not produced scheeles green in bulk yet so i can´t really tell
@@THYZOID I went to a Sherwin Williams paint store last month with a little vintage canister of Paris Green. The man opened it and put the powder in a paint can for me. Then he used a clear varnish to mix with some of the Paris Green powder to create a paint; he dried it. He then used their light scanner to plot the color so he could reproduce a modern equivalent for me. And do you know what happened? He scanned it over and over again, about 5 times, and kept getting an error code. The computer told him that there is no modern pigment equivalent. It can not be gotten close to. He then visited their paint chips and visually pulled out the closest ones. When he held those colors near the Paris green, nothing seemed close. Everything modern was dull and “off”. For the first time in his career, he could not reproduce a paint color. Nothing had the beautiful vibrancy of classic Paris green. So I went and ordered myself 7 kilos of Paris Green pigment powder online and will use the stash to paint my wooden garden trellises, wooden shutters, and other objects that bring beauty to my home and ornamental garden. One thing I will not do is paint garden benches or things people touch, since it is toxic. I’m also using it to do restoration work on some 19th century art objects. This is my favorite color in the whole world. Nothing makes me happier. Thanks for your beautiful video. It’s quite exciting to watch.
Thanks! Good chemistry competently carried out and well explained.
Also known as Scheele's green, and the subject of an urban myth surrounding the gas produced by fungi eating the dye.
Scheeles green is a different pigment which I’ll also make in the future.
@@THYZOID It has been confused with Paris green in the fireworks trade which is not good since it is hygroscopic and perhaps more dangerous with chlorates.
Those bags can leech especially with damp solids inside. I started out storing things I'd made in those but now it's a sticky pile of about 50 of them, including mercury chloride and all sorts 🤦
I did find a bottle for the mercury chloride but yeah wasn't nice to find that when I did. 10ml or 20ml glass bottles are the way from now on.
P.S
I'm currently working on a paris green video, it should be up in a day or so 😊
Also got a new phone so I'll probably see you on discord...
Pretty sure the underside of the eaves of my house are treated with this, probably from when it was built in the 1930s. The wood is very well preserved anywhere the green is.
Amen!
Yes some toxic chemistry I would like to see some cadmium chemistry
Now I'm curious if there's some way to "clean up" arsenic waste so that it's as non-toxic as possible
It could be converted to the nearly insoluble sulfide
Yes react with sodium sulfide or sodium polysulfide. The same method also works well for mercury salts. 🤓
I have a 1820,s mirror covered in Paris green paint I should dispose of it but it’s so pretty with the mercury glass I just put it where no one can touch it
I made a cheap and pretty effective inline desiccator for my vacuum pump using a large mason jar filled with silica gel cat litter. Just drill 2 holes in the lid put a couple tubes with a stainless steel mesh screen on the end of it to keep the silica gel from getting into your pump or your glassware. Eventually I plan to make a better one using a long PVC pipe so the moisture gets a longer contact time.
It was also used in making very decent blue fire in pyrotechnics. The stars in mortar shells. Decent ones.
Most songs they use "green color" as metaphor for poison
In addition to epic chemistry, can we look forward to lyric chemistry?
or dramatic
Fascinating and looking very nice~. I did some research and turns out there's a similiar reaction with antimony trioxide, which also leads to a green product. If you use bismuth oxide, you get black crystals, though, which also occur as the mineral "Kusachiite" in Japan. I only found stuff without the acetate, though, so just CuSb2O4 and CuBi2O4. (The arsenic compound without the acetate also exists and is called "Trippkeite") Would be interesting to see what happens if you add Cu(OAc)2 to Sb2O3 or Bi2O3 - whether there's some acetate in there like in Paris Green or you get the pure oxides like in Trippkeite, I guess~. (Though your lab is probably not equipped for stuff like that, just thinking out loud...)
Sadly I don´t have any antimony compound around right now but I´ll try to keep it in mind for when we start antimony chem.
An easy source of Paris Green for my pyro-technic Formulas. Thankyou for this video.
That is such a cool color.
Btw, did you ever get around to making Silica gel like I asked for a while ago? (rip concentrated acids, but should still work)
Also my drying method sucks that I mentioned, spray drying is preferred. Ofc that's hard to do in a home lab.
Your silica gel method was the one with NaOH + sand followed by dissolving the water glass and crashing out SiO2 with acid if I remember correctly? If so it’s still planned.
@@THYZOID yeees that's the one. dry it and crush it in a rock tumbler or something to get some extremely fine powder that you could potentially use for some crude column chromatography. not sure how well that works, depends on the final particle size.
I would not use sand tbh, just buy those "silica gel - do not eat" dessicant things en-masse (or just buy silica gel), then heat it with NaOH in solution. the sodium silicate i use has approx 30% w/w SiO2, can't remember how much Sodium tho, i'll get back to you on that.
EDIT: you definitely need a slight excess of SiO2 to prevent NaOH in the sodium silicate. NurdRage has a video. ruclips.net/video/xltvwhogklI/видео.html
@@JustinKoenigSilica na I’ll just use quartz and fuse it together with NaOH under high temperatures. As I’m still waiting for my ether and other chems I might even be able to film it tomorrow
@@THYZOID what is the anti iron chemical name
Exceptionally nice video! I love this pigment so much. Do you have a video on Arsenic III Oxide?
Yeah it’s one of my older ones where I burned arsenic sulfide in pure oxygen
@@THYZOID awesome! Thanks for letting me know! I'll check it out. I need to make a bunch of Paris green and need a good procedure to go by. Yours seem to be the best I've found so far. 😃
@@THYZOID one of those "don't try this at home" clips
Nice video. But can ypu say why you didn't sealed it in glass ampoule?
I always choose a container that suits the subject. A paint can is best for a pigment but I sadly didn´t have a glass bottle that fit into the container so I used a plastig bag. A small amount will be ampouled someday
Ah, the dye in wallpaper that slowly gassed you with arsine gas!
Gotta love the Victorian era! 😂
This happened when anaerobic fungi attacked the dye in the wallpaper. Mind you the trimethylarsine created isn't terribly toxic; you were actually far more likely to die from ingestion of the dye than the gas produced.
@@douro20 interesting to know! 👍
when you make pigments, can you please color match to pantone or take to a local paint store to match and share the recipe? I'd love to have historic color hues in my art and home
2:13 Famous last words…
Now do a synthesis on radium paint! /s
I'd love to see how to make the ZnS(Ag) phosphor.
Strontium aluminate paint would be very interesting too!
So this is what they used to call "Thy green death"(tm)?
The same green death which "suicided" Napoleon on his last exile days...
Scheele's green (CuHAsO3) could also be called that (the 2 chemicals are comparably poisonous)
As I recall, that's not the only theory as to how/why he died. But it's certainly plausible.
@@jamesg1367 They actually did a hair analysis on him and found rather low arsenic levels, so they now believe arsenic or Paris Green was not the culprit. In any case, you need to have dampness and fungus growing on the wallpaper that converts Paris Green to arsine gas. No fungus, no problem (or at least a smaller one).
@@joergmaass Thanks!
Scary but useful pigment. BTW what are u planning to do with it?
I´ll just keep it in the container because it is a nice piece of history
A couple drops of HCl will speed up the reaction with the acetic acid.
It's too bad we have no way yet to produce certain hues in nontoxic ways.
You are the 2nd person to do Paris green on youtube
But the first to make it large scale followed by isolating it
@@THYZOID You make and instruct very detailed, really great👍👍
It is said that Napolean probably died because of this toxic chemical.
btw did you use magnetic stirring?
Yes
@@THYZOID Nilered uses it too.
@@tsirolucecomparison871 nearly every chemist uses magnetic stirring….
Oh please for the love of god use a thermocouple on that ika. Its horribly unsafe to use it without the thermocouple as thats how it controls the heating element. If theres no thermocouple it just heats and heats and heats until as you saw it went to 220C. If youre ever boiling organic solvents with that it is an insane safety hazard due to the flash points. With water its okay i guess but not organics.
I don’t want to use a sand bath for such trivial things. For solvents the thermocouple would be worth using but for water I never used it and I never will.
1 question what does it taste like...? im in cornwall uk in an ex mining town there is arsenic everyware lol
Quite similar to death..
like you are about to die
@Edward Elizabeth Hitler yeah lots of copper tin and arsenic here lol
Hmm where did Poorman chemist go? Did you know he poisoned himself with As2O3 it's just that toxic?
He said that he quit on his discord server as he’s busy with work. Also wrote a comment on my channel just yesterday
Beautiful
Just curious, what’s your training in chemistry? Or is it just a hobby?
Currently only an expensive hobby that doesn´t even pay itself off completely trough patreon and youtube
@@THYZOID I’m very impressed at your ability to maneuver an otherwise difficult field. I’m currently pursuing a bachelors in chemistry and couldn’t come up with half the stuff you do
Is there a wet method to get arsenic trioxide from the sulfide ores (realgar/orpiment). I know they dissolve in NaOH to give a mixture of compounds (thioarsenites and whathaveyou). Trying to make some Paris or Scheele Green from the ores :)
I already talked with others about this. There seems to be no easy, reliable and cheap wet process to make decently pure oxide from the ore
شكرا لك لكن كنا نرجو منك ترجمة هذه الفيديوهات الى العربية
Yeah I know but I sadly don’t know how to automate that and I don’t know Arabic
Good video
Hast du irgendwas in Richtung Chemie studiert/ Ausbildung gemacht? Lg
Noch nicht habe ich aber vor
How about gentian violet?
I don´t have the precursors
@@THYZOID Yeah you need formaldehyde and DMA to make the precursor.
Anti iron chemical name
what?
junge was für connections hast du um an arsen ranzukommen
Einfach selbst herstellen ist ja nicht verboten
Are u from germany ?
Yes
I'm pretty much a total moron noob when it comes to chemistry. Like didn't even take it in high school because I'm such an under achiever. Pisses me off. Anyway I did some copper dissolving with hydrochloric. I'm not sure exactly but I used hcl, sulfuric, and eventually I threw some sodium hypochlorite. The result was a green liquid that just looked like copper in solution a deep dark green but settled at the bottom was sediment that looks very similar but more aqua marine than emerald. I thought I ended up with copper chloride or something but I have no clue. Anyone here know I'm quite curious. Also I dissolved a copper sulfate pentahydrate and was letting some crystals fall out of solution. One night I tried to accelerate the process by putting the solution in the freezer and the result was like a very powdery sedimentary form of copper sulfate. I was able to grow a pretty nice sized crystal though which I then cast into resin but that ended up having way too many tiny bubbles so it's not a nice clear display of a large blue crystal and over the months the color has slowly turned less blue and more of that greenish color very interesting in my opinion. Thanks for the video I enjoyed it. I have an idea for you how about a video on what can be made from the leftover of sodium nitrate and sulfuric acid for making fuming nitric acid. I still am not sure what it even is, sodium bisulfate i think but what can I use that to make would love to know. Thanks
Did you use both hydrochloric acid and sulfuric acid in the same container with the elemental copper? Then the addition of sulfuric acid is what gave the copper(II) salt percipitate the aquamarine change in colour. For your own safety I would advise against doing hobbychem without proper knowledge. Specifically when thinking about creating fuming nitric acid, that can really easily fuck you up.
@@satina1169 well I do wear a full face respirator and do everything in the outdoors..
cool
how do you clean the vacuum filter funnel? they are ceramic so how do you clean the holes out.
either with a suitable solvent, an acid, a base or a more aggressive cleaning agent depending on what is stuck on the filter. because you use a filter paper the holes should not contain any leftovers though
ارجو تحميل ترجمة إلى اللغة العربية
I can’t even have working English subtitles…. Would make Arabic ones if I knew how to
@@THYZOID 🥲