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

Printable Version  
Author: Subject: Ways to demonstrate luminol?
AirCowPeaCock
Hazard to Others
***




Posts: 311
Registered: 9-1-2012
Location: In your nation!
Member Is Offline

Mood: Hazardous

[*] posted on 25-1-2012 at 16:04
Ways to demonstrate luminol?


I have recently completed synthesis of luminol and am going to present it too my class tomorrow. Ive tried NaOCl and NaOH, but I suspect there are better ways that I have available. How would I do it with H2O2, what concentration solution ought I use? And with the NaOCl and NaOH how much of each should I use, in how much water, with how much luminol. Sorry, I'm asking for a hand out, but I don't have too terribly much luminol to experiment with. I have low yields on the last steps, next time I think ill synthesize sodium dithionite instead of the janky Nurd-Rage way):



BOLD

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




Posts: 1454
Registered: 9-12-2006
Location: Mars
Member Is Offline

Mood: Nucleophilic

[*] posted on 25-1-2012 at 21:18


Just buy some thiourea dioxide, which is available as a chemical for dyeing (Either used to discharge dye from a cloth item or to reduce indigo before dyeing) . I demonstrate the preparation of luminol using this reagent on my youtube channel.

<iframe sandbox width="560" height="315" src="http://www.youtube.com/embed/-PGtoZEZnzc" frameborder="0" allowfullscreen></iframe>

3-nitrophthalhydrazide: http://youtu.be/PejSbKqPDTg
3-nitrophthalic acid: http://youtu.be/dCo1uo8MDUQ

[Edited on 1-26-12 by UnintentionalChaos]




Department of Redundancy Department - Now with paperwork!

'In organic synthesis, we call decomposition products "crap", however this is not a IUPAC approved nomenclature.' -Nicodem
View user's profile View All Posts By User
AirCowPeaCock
Hazard to Others
***




Posts: 311
Registered: 9-1-2012
Location: In your nation!
Member Is Offline

Mood: Hazardous

[*] posted on 26-1-2012 at 08:04


I used Cu(II)Cl and .5% H2O2 in a .5 M NaOH solution, but thanks anyways(; I'm going to make a big batch this weekend and do something cool with it, my chemistry teacher might let me violate the rule and use blood(;



BOLD

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




Posts: 1564
Registered: 29-12-2011
Location: Wales, UK
Member Is Offline

Mood: Pericyclic

[*] posted on 26-1-2012 at 08:11


That should be CuCl2. You don't need to give the oxidation states in the formula.



"Success is going from failure to failure without loss of enthusiasm." Winston Churchill
View user's profile View All Posts By User
AirCowPeaCock
Hazard to Others
***




Posts: 311
Registered: 9-1-2012
Location: In your nation!
Member Is Offline

Mood: Hazardous

[*] posted on 26-1-2012 at 10:57


I know, but for some reason my fingers like to type it that way :P Also, for future reference, the wiki says cyanides also catalyze the reaction, will cyanates and other similar anions work too?

[Edited on 1-26-2012 by AirCowPeaCock]




BOLD

View user's profile View All Posts By User
AirCowPeaCock
Hazard to Others
***




Posts: 311
Registered: 9-1-2012
Location: In your nation!
Member Is Offline

Mood: Hazardous

[*] posted on 26-1-2012 at 16:37


Would a thiocyanide work?



BOLD

View user's profile View All Posts By User

  Go To Top