| Pages:
1
..
3
4
5
6
7
..
23 |
AngelEyes
Hazard to Others
Posts: 187
Registered: 24-1-2003
Location: South of England
Member Is Offline
Mood: Better than it used to be.
|
|
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\'
|
|
|
demorol
Harmless
Posts: 7
Registered: 13-2-2005
Member Is Offline
Mood: No Mood
|
|
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.
|
|
|
aludel
Harmless
Posts: 6
Registered: 16-11-2004
Location: holland
Member Is Offline
Mood: No Mood
|
|
| 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...
|
|
|
JohnWW
International Hazard
Posts: 2849
Registered: 27-7-2004
Location: New Zealand
Member Is Offline
Mood: No Mood
|
|
Best smell: cannabis oil. The stuff is also good for you.
|
|
|
garage chemist
chemical wizard
Posts: 1803
Registered: 16-8-2004
Location: Germany
Member Is Offline
Mood: No Mood
|
|
Here's a very long list of compounds (perfume raw materials) with their smells:
http://www.thegoodscentscompany.com/rawmatex.html
|
|
|
Magpie
lab constructor
Posts: 5939
Registered: 1-11-2003
Location: USA
Member Is Offline
Mood: Chemistry: the subtle science.
|
|
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
|
|
|
saps
Hazard to Self
Posts: 82
Registered: 7-3-2005
Location: New Britian
Member Is Offline
Mood: disgruntled
|
|
I agree w/ most of the above answers but would like to add that ive never enjoyed methane
|
|
|
Madman
Harmless
Posts: 1
Registered: 28-3-2005
Member Is Offline
Mood: No Mood
|
|
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....
|
|
|
chochu3
Hazard to Others
Posts: 185
Registered: 21-10-2003
Location: South Side Tejas [Cloverland]
Member Is Offline
Mood: Inside looking out
|
|
smelly
piperine from boiled up black pepper in alcohol is pretty nasty.
[Edited on 29-3-2005 by chochu3]
|
|
|
sparkgap
International Hazard
Posts: 1234
Registered: 16-1-2005
Location: not where you think
Member Is Offline
Mood: chaotropic
|
|
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..."
|
|
|
Pyrovus
Hazard to Others
Posts: 241
Registered: 13-10-2003
Location: Australia, now with 25% faster carrier pigeons
Member Is Offline
Mood: heretical
|
|
| 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.
|
|
|
sparkgap
International Hazard
Posts: 1234
Registered: 16-1-2005
Location: not where you think
Member Is Offline
Mood: chaotropic
|
|
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..."
|
|
|
Pyrovus
Hazard to Others
Posts: 241
Registered: 13-10-2003
Location: Australia, now with 25% faster carrier pigeons
Member Is Offline
Mood: heretical
|
|
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.
|
|
|
Saerynide
National Hazard
Posts: 954
Registered: 17-11-2003
Location: The Void
Member Is Offline
Mood: Ionic
|
|
| Quote: | | Originally posted by PyrovusHow about cadaverine? It's quite legal, provided you don't get someone to help you make it.
|
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"
|
|
|
sparkgap
International Hazard
Posts: 1234
Registered: 16-1-2005
Location: not where you think
Member Is Offline
Mood: chaotropic
|
|
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..."
|
|
|
prole
Hazard to Self
Posts: 94
Registered: 4-8-2005
Member Is Offline
Mood: No Mood
|
|
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.
|
|
|
Fleaker
International Hazard
Posts: 1252
Registered: 19-6-2005
Member Is Offline
Mood: nucleophilic
|
|
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]
|
|
|
neutrino
International Hazard
Posts: 1583
Registered: 20-8-2004
Location: USA
Member Is Offline
Mood: oscillating
|
|
| 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.
|
|
|
I am a fish
undersea enforcer
Posts: 600
Registered: 16-1-2003
Location: Bath, United Kingdom
Member Is Offline
Mood: Ichthyoidal
|
|
| 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.
|
|
|
Tsjerk
International Hazard
Posts: 3031
Registered: 20-4-2005
Location: Netherlands
Member Is Offline
Mood: Mood
|
|
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.
|
|
|
12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
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
|
|
|
Fleaker
International Hazard
Posts: 1252
Registered: 19-6-2005
Member Is Offline
Mood: nucleophilic
|
|
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).
|
|
|
12AX7
Post Harlot
Posts: 4803
Registered: 8-3-2005
Location: oscillating
Member Is Offline
Mood: informative
|
|
Yep. You ever wonder what the neighborhood thought of that blunder? Or anything else involving H2S and similar stinkies?
Tim
|
|
|
Fleaker
International Hazard
Posts: 1252
Registered: 19-6-2005
Member Is Offline
Mood: nucleophilic
|
|
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).
|
|
|
ni3
Harmless
Posts: 14
Registered: 4-7-2006
Location: snoresvill, washington, usr
Member Is Offline
Mood: decomposing
|
|
the worst formaldahyde
the best ethanethiol
|
|
|
| Pages:
1
..
3
4
5
6
7
..
23 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
