Rhodanide
Hazard to Others
Posts: 348
Registered: 23-7-2015
Location: Ｔｈｅ ８０ｓ
Member Is Offline
Mood: That retro aesthetic
|
|
Fresh, minty smell from addition of Cu(OH)2 to con. NaOH soln.
Upon dissolving Copper (II) Hydroxide in to a hot, strong solution of Sodium Hydroxide, a solution of blue Sodium Cuprate is formed. Along side this,
I noticed that there was a fresh, minty smell which was very similar to that of a sweetened mint tea. I replicated this experiment three times in
total, the first being with tap water, the second with filtered water, and the last with distilled water. Both my NaOH and Cu(OH)2 were
pure, and the same results were achieved each time - that same smell. There were no organic compounds present, and I did these experiments both
indoors and outdoors. No change. Try it yourself and let me know if you experience the same thing.
Thanks,
T/R
[Edited on 21-11-2017 by Tetra]
|
|
|
clearly_not_atara
International Hazard
Posts: 2694
Registered: 3-11-2013
Member Is Offline
Mood: Big
|
|
NaOH tends to absorb acidic molecules from the air, mostly CO2 but also whatever else happens to be floating about. When an acid is added, or an
amphoteric salt like CuO, the absorbed molecules can be released. Do you use a minty-scented air freshener, by any chance?
[Edited on 04-20-1969 by clearly_not_atara]
|
|
|
ninhydric1
Hazard to Others
Posts: 345
Registered: 21-4-2017
Location: Western US
Member Is Offline
Mood: Bleached
|
|
Or maybe you were making some methyl salicylate around the same time you were performing this reaction? A small amount of methyl salicylate, after
all, is still detectable by one's nose if airborne.
The philosophy of one century is the common sense of the next.
|
|
|
Rhodanide
Hazard to Others
Posts: 348
Registered: 23-7-2015
Location: Ｔｈｅ ８０ｓ
Member Is Offline
Mood: That retro aesthetic
|
|
Quote: Originally posted by clearly_not_atara  | | NaOH tends to absorb acidic molecules from the air, mostly CO2 but also whatever else happens to be floating about. When an acid is added, or an
amphoteric salt like CuO, the absorbed molecules can be released. Do you use a minty-scented air freshener, by any chance? |
Absolutely no air freshener anywhere near the workspace. It could mask something deadly.
|
|
|
Rhodanide
Hazard to Others
Posts: 348
Registered: 23-7-2015
Location: Ｔｈｅ ８０ｓ
Member Is Offline
Mood: That retro aesthetic
|
|
| Quote: Originally posted by ninhydric1 | | Or maybe you were making some methyl salicylate around the same time you were performing this reaction? A small amount of methyl salicylate, after
all, is still detectable by one's nose if airborne. |
I haven't made any Methyl Salicylate for years, and have never successfully isolated any. Like I stated, I did this both indoors and outdoors, with
the same result. 
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
