Sciencemadness Discussion Board
Not logged in [Login ]
Go To Bottom

Printable Version  
Author: Subject: Walgreens instant cold packs there brand
cannagorila
Harmless
*




Posts: 1
Registered: 17-5-2016
Member Is Offline

Mood: No Mood

[*] posted on 17-5-2016 at 13:58
Walgreens instant cold packs there brand


What is there brand cold pack made from and if urea how do I tell, also the perils are very small and don't really smell like anything but are pure white. Any guess?
Please help.
View user's profile View All Posts By User
Firmware21
Harmless
*




Posts: 33
Registered: 22-1-2015
Member Is Offline

Mood: Ņ͈̣̭̺̈ͬ͊̔i̓̿͑ͯ̂ͪ҉̸̺̀t͉̣͕͙̟̪̅͐͂̏͌ͭ͗̑͝ṙ̶̛̙̥̝̻̟̓ͬ̾ͧ͒͘ͅa͒͊ͯ̾̑̏̌̓̕҉͚͚͓͔͙͚̥t͆̌͑ͩ̐͗ ͖̻̲̪̲̙͘ͅe͙͕͙̙̤̤̫̒ͩͣ̅̊̍̉͒ͬ́͟ͅs͈̬̮̥̻͂ͥͨ̂ͮͨ͒́͠ !!!

[*] posted on 17-5-2016 at 14:09


Honestly, I'd do this : https://www.youtube.com/watch?v=2GILxx9ahuA

However I just read somewhere that adding NaOH to urea might also produce ammonia
(There http://www.scienceforums.net/topic/38367-what-happens-when-y...),
it's probably BS though.

Are you sure there isn't anything written on the pack ? Google anything you have on it, you might get some results.
View user's profile View All Posts By User
The Volatile Chemist
International Hazard
*****




Posts: 1973
Registered: 22-3-2014
Location: 'Stil' in the lab...
Member Is Offline

Mood: Copious

[*] posted on 17-5-2016 at 15:44


No, not BS, so far as I've seen through googleing the decomp. of Urea. Urea is, from what I can see, hydrolyzed by strong acid- and alkaline- solutions into various ammonaical compounds. I'm fairly certain you'd be able to tell by treating with strong base, but perhaps thermal decomposition would be a better route. If you're going for buying urea, pet-safe driveway salt is super cheap and is from what I've seen usually near-pure urea (and labeled so). Though I assume you're not particularly looking for urea.



View user's profile Visit user's homepage View All Posts By User
vmelkon
International Hazard
*****




Posts: 669
Registered: 25-11-2011
Location: Canada
Member Is Offline

Mood: autoerotic asphyxiation

[*] posted on 18-5-2016 at 14:45


I tested using sulfuric acid and a copper wire. If it turns blue in a day, it is NH4NO3. If you gets white precipitate, it had Ca(2+).
If there is no color change, it is urea.




Signature ==== Is this my youtube page? https://www.youtube.com/watch?v=tA5PYtul5aU
We must attach the electrodes of knowledge to the nipples of ignorance and give a few good jolts.
Yes my evolutionary friends. We are all homos here.
View user's profile View All Posts By User
violet sin
International Hazard
*****




Posts: 1424
Registered: 2-9-2012
Location: Back yard staring at stars
Member Is Offline

Mood: Good

[*] posted on 18-5-2016 at 18:05


If you test with NaOH, arent you going to get the production of ammonia from either urea or ammonium nitrate? Kinda defeats the purpos of the test.

Sublimation perhaps?




View user's profile View All Posts By User
vmelkon
International Hazard
*****




Posts: 669
Registered: 25-11-2011
Location: Canada
Member Is Offline

Mood: autoerotic asphyxiation

[*] posted on 21-5-2016 at 07:30


Quote: Originally posted by violet sin  
If you test with NaOH, aren't you going to get the production of ammonia from either urea or ammonium nitrate? Kinda defeats the purpose of the test.

Sublimation perhaps?


That's correct, it will release NH3.




Signature ==== Is this my youtube page? https://www.youtube.com/watch?v=tA5PYtul5aU
We must attach the electrodes of knowledge to the nipples of ignorance and give a few good jolts.
Yes my evolutionary friends. We are all homos here.
View user's profile View All Posts By User
symboom
International Hazard
*****




Posts: 1133
Registered: 11-11-2010
Location: Wrongplanet
Member Is Offline

Mood: Doing science while it is still legal since 2010

mad.gif posted on 21-5-2016 at 12:07
no MSDS


Looking up the msds.
products sometimes have the chemicals listed on the packaging some are not which can be irritating looking up the brand name along with the msds gives you what it contains

If they would post it on their website would make it easier
Im surprised by in the age of chemical pobia its not listed

Then again its better for people not to know the whole its a trade secret thing
View user's profile View All Posts By User

  Go To Top