otonel
Hazard to Self
Posts: 84
Registered: 9-4-2005
Member Is Offline
Mood: No Mood
|
|
Sodium nitrite identification
Hy and a happy new year!
I have a problem with sodium nitrite identification, I have a bottle with sodium nitrite without tag and I search for a way to identify using
household chemicals.
If you can help me with an idea to solve my problem I would be grateful.
|
|
|
VSEPR_VOID
National Hazard
Posts: 719
Registered: 1-9-2017
Member Is Offline
Mood: Fullerenes
|
|
try making isopropyl nitrite with it using HCl and the alcohol. If its NaNO2 you should get a organic layer that burns with a white flame. Make sure
to do the addition of the acid to the NaNO2(aq)/alcohol slowly and with lots of ice
Within cells interlinked
Within cells interlinked
Within cells interlinked
|
|
|
j_sum1
Administrator
Posts: 6333
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
nitrites form a bunch of different complezes in transition metal solutions. I forget all the details and it depends a bit on what you have on hand.
But a bit of research on your part and you will find a distinctive colour that you could use as a qualitative test.
You could also react with an ammonia solution and see if N2 gas evolves.
|
|
|
symboom
International Hazard
Posts: 1143
Registered: 11-11-2010
Location: Wrongplanet
Member Is Offline
Mood: Doing science while it is still legal since 2010
|
|
Ammonium nitrate, ammonium sulfate and ammonium chloride reacts with sodium nitrite forms nitrogen gas at room temperature.
https://m.youtube.com/watch?v=jezSXhkByHI
[Edited on 3-1-2019 by symboom]
|
|
|
lordcookies24
Hazard to Self
Posts: 78
Registered: 2-1-2019
Location: pluto
Member Is Offline
Mood: curious
|
|
It has a density of 2.3g/cm3 so if you are courageous enough to weight a bunch of chemicals, give it a try
|
|
|
Ubya
International Hazard
Posts: 1247
Registered: 23-11-2017
Location: Rome-Italy
Member Is Offline
Mood: I'm a maddo scientisto!!!
|
|
what about the volume?
---------------------------------------------------------------------
feel free to correct my grammar, or any mistakes i make
---------------------------------------------------------------------
|
|
|
fusso
International Hazard
Posts: 1922
Registered: 23-6-2017
Location: 4 ∥ universes ahead of you
Member Is Offline
|
|
Powdery stuff's
volume is difficult to be measured since it contains a lot of air.
|
|
|
morganbw
National Hazard
Posts: 561
Registered: 23-11-2014
Member Is Offline
Mood: No Mood
|
|
This is not a definitive way to identify anything, but if I had a container with what was supposed to be sodium nitrite but was worried it might not
be or thought I was sold something else instead.
A Country boy test is to place a spoonful of the sodium nitrite in a beaker and dose it with strong HCl.
If you need to leave the area because of a cloud of NOx gases, that may be taken as a positive clue.
|
|
|
otonel
Hazard to Self
Posts: 84
Registered: 9-4-2005
Member Is Offline
Mood: No Mood
|
|
Thank you, was easy following your advice, I test using HCl and leave a lot of red NOx gases, second I make some isopropyl nitrite and tomorrow i
want to test a mix of sodium nitrite with ureea like in this video https://www.youtube.com/watch?v=VzyWsdWfGUY
|
|
|
AJKOER
Radically Dubious
Posts: 3026
Registered: 7-5-2011
Member Is Offline
Mood: No Mood
|
|
Place a measured amount of the suspect nitrite source together with say an excess of ammonium sulfate (from the action of ammonia water on Epsom Salt)
in a small plastic bottle. Crush the bottle to deflate it and place it in a safe place.
In time, the N2 formation reaction alluded to above by Symboom will cause the bottle to resemble a balloon, or even explode (take precautions to
protect skin and eyes from solution contact). If one collects the N2 gas (or lets the vessel explodes in an inverted vessel filled with water), the
volume of nitrogen gas formed, as indicted by the volume of displaced water, can be used to estimate the concentration of nitrite.
Interestingly, NH4NO2 (as a mix of NH4Cl+NaNO2) has been employed as a flameless pressure explosive in mines (where they may be a CH4 presence). See
comments and references at http://www.sciencemadness.org/talk/viewthread.php?tid=78873#... .
[Edited on 4-1-2019 by AJKOER]
|
|
|
Ubya
International Hazard
Posts: 1247
Registered: 23-11-2017
Location: Rome-Italy
Member Is Offline
Mood: I'm a maddo scientisto!!!
|
|
that's why the sarcastic "" XD
---------------------------------------------------------------------
feel free to correct my grammar, or any mistakes i make
---------------------------------------------------------------------
|
|
|
Assured Fish
Hazard to Others
Posts: 319
Registered: 31-8-2015
Location: Noo Z Land
Member Is Offline
Mood: Misanthropic
|
|
If you wanted to try determining the density by way of d=m/v
You might get away with first crushing the supposed nitrite in a pestle and mortar to get rid of any air pockets, then weigh the salt and record
weight, followed by dumping in into a graduated cylinder with a known volume of mineral oil in it. Then shake the solution with the precipitate that
has sunk to the bottom to make sure any air pockets float to the top.
Then check the volume again and subtract it from the volume of oil in the cylinder prior to adding the salt.
This should give you a reasonably accurate determination of volume, this would work with anything that sodium nitrite is insoluble in.
Sufficiently advanced science is indistinguishable from madness.
|
|
|
WangleSpong5000
Hazard to Others
Posts: 129
Registered: 3-11-2017
Location: Oz
Member Is Offline
Mood: Curious
|
|
What he said...
Hyperbole be thy name
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
