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AngelEyes
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Mood: Better than it used to be.
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Worst.
Butyric Acid.
Best.
Whichever chemical gives freshly-cut grass it's smell. Wonderful...
\'Silk and satin, leather and lace...black panties with an Angel\'s face\'
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demorol
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I like the smell of vanillin, ethyl butyrate (like pineapple) and phenol. The latter reminds me of watercolors I played with when I was a kid.
Worst smells: skatole, pyridine, H2S.
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aludel
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| Quote: | Originally posted by I am a fish
......
Don't they smell very similar to you? I doubt I could tell the difference between the halogens by smell alone. I think there are some
differences...
It is possible that you are merely used to smelling them in different concentrations? Bromine is much more volatile than iodine and so with similar
conditions, far more of the vapour will reach your nose. The concentration of a substance can have a great effect on the desirability of its odour.
(For example, many perfumes contain very small quantities of foul smelling substances.)
[Edited on 8-2-2005 by I am a fish] |
You're right about the concentration influence... in practice, bromine tends to be smelled in higher concentrations than iodine.
Association with old memories is also important, for example: when I smell chlorine I go back 30 years and enter hell on earth again: school swimming
Also, maybe I like iodine because I associate it with medicine... ???
Idea: compare chlorine , bromine and iodine in equal or similar (low) concentrations. A blind test: try to identify the halogen by smell. I think it
can be done...
Sorry for the late reply...
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JohnWW
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Best smell: cannabis oil. The stuff is also good for you.
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garage chemist
chemical wizard
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Here's a very long list of compounds (perfume raw materials) with their smells:
http://www.thegoodscentscompany.com/rawmatex.html
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Magpie
lab constructor
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Location: USA
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Mood: Chemistry: the subtle science.
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That's a neat list garage chemist.
I like the smell of diethyl ether if not too strong. I used to smell it in the Doctor's office but I don't know what they would use it for
anymore.
I like the smell of ammonia and nitrobenzene if not too strong also. I believe nitrobenzene is the solvent in my shotgun cleaning solution.
The single most important condition for a successful synthesis is good mixing - Nicodem
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saps
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I agree w/ most of the above answers but would like to add that ive never enjoyed methane
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Madman
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HeyyYY!! OKay smart chemist people, i need you huys/gals to tell me how a 13 year old kid can make a very smelly chemical, that cant get me
arrested...for using it in school....
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chochu3
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smelly
piperine from boiled up black pepper in alcohol is pretty nasty.
[Edited on 29-3-2005 by chochu3]
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sparkgap
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Madman, posts like yours don't get much replies here, I'm afraid. 
Expect merciless taunts after this... 
sparky (^_^)
"What's UTFSE? I keep hearing about it, but I can't be arsed to search for the answer..."
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Pyrovus
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| Quote: | Originally posted by Madman
HeyyYY!! OKay smart chemist people, i need you huys/gals to tell me how a 13 year old kid can make a very smelly chemical, that cant get me
arrested...for using it in school.... |
How about cadaverine? It's quite legal, provided you don't get someone to help you make it.
Never accept that which can be changed.
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sparkgap
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Very smelly, yes, but quite irritating and corrosive when pure.
Be safe, kiddies!
sparky (^_^)
P.S. My k3wl-detector needle is wagging widely here...
"What's UTFSE? I keep hearing about it, but I can't be arsed to search for the answer..."
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Pyrovus
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But it's also very easy for kewls to make . . . (where's an evil emoticon when you need one?)
Never accept that which can be changed.
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Saerynide
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| Quote: | | Originally posted by PyrovusHow about cadaverine? It's quite legal, provided you don't get someone to help you make it.
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ROFL
Chickens or steaks might work 
"Microsoft reserves the right at all times to monitor communications on the Service and disclose any information Microsoft deems necessary to...
satisfy any applicable law, regulation or legal process"
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sparkgap
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Heck, if he's really serious about obtaining the cadaverine naturally, he can try poking around at cemeteries or garbage heaps.
sparky (^_^)
"What's UTFSE? I keep hearing about it, but I can't be arsed to search for the answer..."
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prole
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I'd hafta say that nitrotoluene smells quite unpleasant. It is reminiscent of Amoretto, the after dinner liquer, only way stronger. Gives a
real nice headache, too.
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Fleaker
International Hazard
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Butyric acid is nasty but not particularly dangerous; I still can't stand the odor of it. Just plain rancid.
Hydrogen selenide, however, is nasty and very dangerous, more toxic than HCN and extremely irritating. A hideous odor that really 'clings'
(truly unique smell beyond my explanation: pungent, and just inexplicably odd). I hope none of you have any experience with it, as it's a
hemoglobic poison and leaves you feeling quite bad for quite a long time. I think the TLV is .05 ppm. Some tellurium compounds smell horrible as
well and are similarly very toxic.
Best smells? Hm, I'd have to say anhydrous ethanol. The odor is very reminiscent of strawberries, at least to me. Diethyl ether has a pleasing
odor as well.
Anyone else here noticed their sense of smell going?
[Edited on 6-9-2005 by Fleaker]
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neutrino
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| Quote: | Originally posted by Fleaker
Best smells? Hm, I'd have to say anhydrous ethanol. The odor is very reminiscent of strawberries, at least to me. |
Is that reagent grade or the denatured junk? I don’t think EtOH has a smell, so you may be smelling some esters.
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I am a fish
undersea enforcer
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Location: Bath, United Kingdom
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| Quote: | Originally posted by Fleaker
Hydrogen selenide, however, is nasty and very dangerous, more toxic than HCN and extremely irritating. A hideous odor that really 'clings'
(truly unique smell beyond my explanation: pungent, and just inexplicably odd). I hope none of you have any experience with it, as it's a
hemoglobic poison and leaves you feeling quite bad for quite a long time. I think the TLV is .05 ppm. Some tellurium compounds smell horrible as
well and are similarly very toxic. |
It's a pity that selenium compounds are so toxic. I've been tempted by the idea of making hydrogen selenide for a long time. (It's
very easy; you just have to heat selenium with iron powder, and then dissolve the resulting iron selenide in an acid.) However, I'm just too
scared of it. Another chemical I've wanted to make is carbon diselenide, which can be made my heating selenium with dichloromethane (it's
a pity that carbon disulphide can't be made in a similar manner.) However, again, it's just too toxic.
I'd also like to make hydrogen telluride and carbon ditelluride but I'm too scared of my tellurium to even open the container.
1f `/0u (4|\\| |234d 7|-|15, `/0u |234||`/ |\\|33d 70 937 0u7 /\\/\\0|23.
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Tsjerk
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Could anybody tell me about the toxicity of selenium disulfide? I don't think it's very toxic but after all these story's I'm not
sure anymore.
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12AX7
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The disulfide isn't that bad, as selenium goes. UTFSE: http://www.google.com/search?q=selenium+disulfide
H2Se is pretty gnarly though: 50ppb exposure limit (TLV). Odor threshold 0.3ppm, LC50/1hr 2ppm!
Tim
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Fleaker
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Originally posted by Neutrino: "Is that reagent grade or the denatured junk? I don’t think EtOH has a smell, so you may be smelling some
esters."
It was a newly opened bottle of ACS grade absolute ethanol, however, the delightful smell could have been a combination of factors. There were at
least 4 other solvents in use that day (toluene, cyclohexanone, etc).
I highly discourage working with H2Se even with a quality fume hood: it's an unnecessary hazard and you can quickly be overexposed (you will find
that your sense of smell is quickly lost when working with it). The stuff is really quite toxic, and the ill effects take several months to wear off
(in my case at least). Tim is quite aware of the story (I believe I had mentioned it to him along with a list of other mishaps).
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12AX7
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Yep. You ever wonder what the neighborhood thought of that blunder? Or anything else involving H2S and similar stinkies?
Tim
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Fleaker
International Hazard
Posts: 1252
Registered: 19-6-2005
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AngelEyes posted:
"Best.
Whichever chemical gives freshly-cut grass it's smell. Wonderful..."
That would be hexanal. Just found that out in the most unlikely of places ( an essay on the flavor industry).
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ni3
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the worst formaldahyde
the best ethanethiol
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