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chemist1243
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16 oz of nitroethane. Buy or nah?
I found 16oz of nearly pure nitroethane in the form of brush cleaner. I know its almost pure, as ive used the same formula straight from a .5oz bottle
before in the Henry reaction and everything went fine, plus MSDS confirms its at least 98%.
Should i buy it? I was able to find it on amazon and eBay, but am still nervous because..well...its a massive quantity. I’m worried if i may get a
visit from some law enforcement entities after ordering such a large amount of a product who’s main component almost certainly implies drug
synthesis.
I’m torn. Thoughts?
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Texium
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If you’re in the US, nitroethane is DEA list 1, so the sale info will have to be logged, and made available to the DEA on request. Buy it at your
own risk. If you weren’t actually making drugs and had a more legitimate use for it, I’d say you really wouldn’t have much to worry about, but I
know that isn’t the case, so yeah, probably better for you and the amateur community at large if you don’t purchase it.
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chemist1243
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So what? Ive ordered nitroethane brush cleaner and benzaldehyde in the same month before, no visits yet. What is the chance they’ll even come?
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karlos³
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Quote: Originally posted by chemist1243  | | So what? Ive ordered nitroethane brush cleaner and benzaldehyde in the same month before, no visits yet. What is the chance they’ll even come?
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When they have time, and when they can be sure that a significant amount of product has been made(that half liter might would be sufficient to wake
them up, no idea).
If you buy it from inside the states, better to let it be.
But if its from the outside, no worries, I got friends in the US who bought liters of nitroethane from germany with no issues.
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monolithic
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| Quote: Originally posted by Texium | | If you’re in the US, nitroethane is DEA list 1, so the sale info will have to be logged, and made available to the DEA on request. Buy it at your
own risk. If you weren’t actually making drugs and had a more legitimate use for it, I’d say you really wouldn’t have much to worry about, but I
know that isn’t the case, so yeah, probably better for you and the amateur community at large if you don’t purchase it. |
The threshold for regulated transactions of nitroethane is 2.5 kg per the DEA Chemcial Handler's manual. At any rate, I'd be interested to see the
product. I was under the impression that all of those nitroethane "nail removers" and "brush cleaners" were reformulated to acetone or other solvents,
regardless of what the outdated MSDS claimed.
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student
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Mia Secret Brush Cleaner contained only about 5% nitroethane even though that was the only solvent listed in the ingredients.
What you need is a woman who will put your bottle with her beauty supplies! 
[Edited on 4-6-2021 by student]
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karlos³
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Yeah but that only works up to a certain amount.
3x1l of pure nitroethane definitely is too much for that excuse, speaking from experience 
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Fyndium
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If you have time, you can buy stuff, put it on shelf(or deeper) and sit on it for half a year or more. If someone knocks, you know it was a problem to
someone, but you don't have a problem. I read about this something like 10 years ago, when an user at a passed forum indicated that he had bought a
lot of all kinds of interesting stuff and put it away, and behold, 2 months passed and he got a knock (actually a no-knock), but they found absolutely
nothing, and case dried as fast as it came up. Don't know though what happened afterwards.
In Europe honeypots are not a commonplace activity because LE is generally not allowed to sell, but only buy suspected contraband, but I know several
cases in US.
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draculic acid69
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| Quote: Originally posted by chemist1243 | | So what? Ive ordered nitroethane brush cleaner and benzaldehyde in the same month before, no visits yet. What is the chance they’ll even come?
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A lot more likely now that U have announced that U r feeling sketchy about it to the world wide web.
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njl
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This. Your username is not a shield; it's a name just like any other. A name that is now tied to a post, on a chemistry forum, on the internet, clear
for anyone who cares to see.
Reflux condenser?? I barely know her!
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zed
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It's brush cleaner. How could an innocent artist know it has some weird chemical in it? Try to order it through your local art supply store.
LE would better utilize their energies in attempting to regulate the hundreds of tons of Ephedrine, imported by the Mexican Drug Cartels every year.
Courtesy of China, India, and the Mexican Drug Cartels, the USA has been flooded with nasty drugs, at discount prices.
Nitroethane can be synthesized, but it's irksome.
[Edited on 5-6-2021 by zed]
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karlos³
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| Quote: Originally posted by njl |
This. Your username is not a shield; it's a name just like any other. A name that is now tied to a post, on a chemistry forum, on the internet, clear
for anyone who cares to see. |
Nobody I know got ever in trouble because of their online activities only.
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chemist1243
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Just got it. Its the same labeling format, brand, and formula as the regular small bottles of this brand, which are 14ml each.
I have used those .5 oz bottles in the Henry reaction and observed the correct color changes and crystallization of the nitropropene as described in
literature.
I don’t think the supplier is a honey pot. There have been over 1000 orders in the past year with 96% positive reviews.
I suppose some of you found it! There are 2 less bottles available than when I checked yesterday.
It’s unlikely the DEA has any business with me. Not going into too much detail, but for undisclosed reasons it would be a waste of time and
resources to prosecute me, which is more apparent after reading the conditions in which most of the negative consequences of this purchase would
actually come about.
Conveniently, I actually do have other hobbies. I paint and have a very small area where I mess with perfumery stuff. I’ve always used acetone for
convenience(when cleaning acrylic), but I guess it’s probably time to switch to something better.
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mr_bovinejony
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Ohh I recognize that brand. I'm curious to know how much of a yield you get if you distill it
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karlos³
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Well, he said he has used it as is already, so there is probably no need for that.
Anything unwanted can be removed from the nitroalkene later, I assume?
But he hasn't said anything about his henry's yields or such, so who know if that is advisable...
E: nitroethane is first on the listing, and the other things are stuff thats usually only used in minute amounts...
I would guess its pretty pure, besides the fragrance and colouring.
[Edited on 7-6-2021 by karlos³]
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morganbw
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| Quote: Originally posted by zed | It's brush cleaner. How could an innocent artist know it has some weird chemical in it? Try to order it through your local art supply store.
LE would better utilize their energies in attempting to regulate the hundreds of tons of Ephedrine, imported by the Mexican Drug Cartels every year.
Courtesy of China, India, and the Mexican Drug Cartels, the USA has been flooded with nasty drugs, at discount prices.
Nitroethane can be synthesized, but it's irksome.
[Edited on 5-6-2021 by zed] |
Irksome is a true description. Doable but a little mind bending.
[Edited on 6/7/2021 by morganbw]
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chemist1243
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I always get back just a little bit more product than the amount of aldehyde I put in. So I’d say 60% on the Henry after purification when using
undistilled brush cleaner. Would probably be higher if I had more experience.
The first time I did the Henry reaction, I used brush cleaner. I’ve never had to distill It for the reaction to work but I would be interested to
know if it made a difference.
It’s certainly viable, great source of nitroethane. A lot of these things just pop up and die out though, so it can be a matter of keeping a good
eye out for it and grabbing it ASAP when you see it.
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njl
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| Quote: |
I always get back just a little bit more product than the amount of aldehyde I put in
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I’d say 60% on the Henry
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Can you elaborate on what this means?
Reflux condenser?? I barely know her!
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karlos³
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Can you put this into a percentage of theoretical yield please, and say under which conditions, using what amine catalyst?
Those details are very important.
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chemist1243
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Put 10.6g of benzaldehyde(.1mol) and 8.26g of nitroethane(.11mol) in a flask. The total weight of those 2 main reagents is 18.86g. Now let’s say I
get 11g of product from a reaction using this ratio. That’s “just a little bit more product than the amount of aldehyde I put in”, just a bit
more than 10.6g. (11/18.86)*100 = 58.3%
So about 60%, guess I was off a bit. That’s a confusing way to measure yield im sure. If everything had gone perfect, I’d have 16.3g of product.
So the theoretical yield would be (11/16.3)*100 = 67.4%. A little high for the conditions I use, meaning I am bad at measurements and estimations ):
I’ve tried it using an adaptated mdp2np synthesis from Pihkal. I use freebase PEA as my catalyst. I’ve tried using .01mol of catalyst instead of
.1mol like in the reference. I also tried using .12mols of nitroethane instead of .2
I got best results using a 1:1 molar ratio of catalyst to aldehyde and 1:2 molar ratio of benzaldehyde to nitroethane.
With a 1:10 molar ratio of catalyst to aldehyde and .12mols of nitroethane, The color only darkened to a dark yellow even after 6 hours. while using
the ratios that Shulgin uses, after 2 hours of reflux it was very orange. With the ratios Shulgin uses, all the nitropropene crashed out very quickly
when water was added. With the modified ratios, I could not get it to crystallize, even using seed crystals I had.
https://erowid.org/library/books_online/pihkal/pihkal100.sht...
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chemist1243
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I found some more information on this stuff, ill also be distilling it tomorrow, which is when my new thermometers should get here.
interestingly, I found a 2 star review on ebay for the smaller bottles of this brand. the buyer said "This is expensive acetone (25%) among other
chemicals other than what’s listed on the bottle.".
hmmm. so I contacted him asking how he knew this, and he simply said that another buyer did an NMR on it. bingo! so I ask if he has any contact to the
person or if he can access the data. his reply? "nope". oh well, there goes that gold.
I did add a few ml of the brush cleaner to some steel wool in 31% HCl, left it for 15 minutes, then diluted with water. no overwhelming smell of
ethylamine, but then again its mostly muriatic acid so it would've been salted immediately. perhaps i should add some base to neutralize the HCl and
freebase he amine and then see?
also, the product floats on water. now this could be because the nitroethane is diluted with a much less dense solvent which is immiscible with water
yet miscible with Nitroethane, or it could have no nitroethane in it at all and be something different entirely. i have no idea, all i know is the
stuff doesnt sink, even with shaking it always floats back to the top.
i also did a burn test. now, if you take RC fuel(which is basically just MeOH, nitromethane, and lubricant), pour it on some concrete or blacktop, and
light it, you will notice that it burns in an odd way. ill try my best to describe it. the flame seems to repeatedly "flash" while making a soft,
quick rumbling sound, each time flaring up like that and temporarily receding back before doing it again.
so i mixed some of the brush cleaner with about 4x its volume with IPA, poured it on the black top, and set it on fire. initially, the mixture burned
normally like gasoline or high proof alcohol, but as it died down it made the repeating flash/rumble just like nitromethane does.
the ebay buyer says its 25% acetone among other chemicals than whats listed in the bottle. this is vauge but could imply that those chemicals are
simply among what is listed, meaning there IS nitroethane.
it does have an acetone-like smell, but after shaking with water it is more fruity. this is most likley the perfume, but still an interesting
observation because it adds credibility to what this ebay buyer is saying. if the acetone smell goes away after shaking with water, it probably had
acetone that went into the water.
like i said i will do a distillation ASAP and verify this brand once and for all.
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Fery
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chemist1243 - yes, nitroethane has nice fruity scent
here an useful thread concerning acetone - nitroethane separation:
http://www.sciencemadness.org/talk/viewthread.php?tid=7689
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chemist1243
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first Ill just do a simple distillation, recording and collecting what comes over at what temperatures and how much. I should be able to identify at
least one of the ingredients from doing that. if there are other boiling points matching those of known azeotropes or solvents even better.
maybe fractional distillation will be needed, but ill see when I get there.
EDIT: I have been waiting all day for my new thermometers, and I till need to see how much they're off by. I will start tomorrow.
[Edited on 11-6-2021 by chemist1243]
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chemist1243
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RESULTS:
50ml of the brush cleaner is added to a RB flask. this is then set up for simple distillation, insulated with foil and then heated. 3 fractions were
collected over period of almost 2 hours. the following time stamps, temperatures and changes to the set-up have been condensed and compiled below,
being listed in that order:
T+ 0:00 | 29C | fan turned on low and directed towards setup for ventilation
T+ 0:00 - 15:00 | 29C | fan turned off |
T+ 20:00 | 58C | fan turned on again |
T+ 25:00 | 54C | fan turned off |
T+ 26:44 | 61C |
T+ 28:02 | 64C | flask switched out, distillate weighed |
T+ 30:00 - 35:00 | 65C |
T+ 40:03 - 48:29 | 64C |
T+ 51:36 - 54:39 | 60C |
T+ 56:35 | 56C | flask switched out again |
T+ 61:03 | 123C |
T+ 65:36 - 115:23 | 29C |
after 115 minutes, the distillated was stopped before reaching dryness.
the first fraction came over at 54-58C, and weighed 3.6g. this is around the the boiling point of acetone, so I think that's what it is. I will have
to do more tests to be sure.
the next fraction was around 61-64C, roughly the boiling point of methanol. this was larger, weighing 5.6g. interesting.
then the largest fraction and arguably the most disappointing as well was the last. it boiled at 123 - 129C, which averages out to exactly 126; the
boiling point of a commonly used solvent in brush cleaners and nail polish removers, n-Butyl Acetate. this fraction weighed 34.58.
altogether, the fractions weigh 43.75g
so the respective percentages for acetone, methanol, and n-Butyl Acetate are 8%, 13%, and 79.
maybe they are different solvents though, I still have to test that. I have some pictures too.
in the photo with the 2 flasks and beaker, the far left 50ml beaker is the first fraction, the one next to that is the second fraction, and the last
is the third. the other photo is the 6g or so of remaining liquid in the main flask. I didnt want to distill to dryness for safety reasons, but I dont
think its anything other than the NBA.
unfortunately, this bottle is useless. dont buy the big bottles of this brand if you want nitroethane.
 
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mr_bovinejony
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Do they not update the sds on their website? That's kinda shitty, although I bought some small bottle of the same brand and same name so hopefully
it'll be different
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