chromatography solvent

[lainyv]

earlier someone was asking about petroleum ether to use in a year 12 prac. and they were given the solution hexane/acetone to use instead. could someone who has tried it with success tell me how much of each quantity to use cos i have a boy in year 12 that has to do this part before Monday 11th august....thanks for your help :

[Ocker]

Sounds like nasty stuff you're using!
What's wrong with metho?

[lainyv]

i havn't used anything yet but there was a topic on it earlier on and someone mentioned the hexane/acetone stuff worked and i don't want to mess up his experiment with the worng stuff. have you use meths. with good results?

[rae]

Hi Lainyv,
It was me that suggested the Hexane /acetone mix. Our resident Chemistry expert recommended this as the solvent.
The topic was Forensic Chemistry and the prac was Garden greens. It asked for a 9:1 mix of petroleum ether and Acetone. I made a 9:1 mix of Hexane/ acetone and as far as I remember it wored really well.
I can fax you the prac if you need it!!

Lorrae

[lainyv]

if you could fax the prac. to 0242570949 it would be very appreciated...i love this ite....thanks a bunch

[lainyv]

havn't got the fax yet is it possible to write it on this site. he has done the first part of the task, creating the green goo with leaves and a mixture of acetone/meths now he needs to let it dry and then add another solvent (this is where the petroleum ether was supposed to be used) and the different colours will appear is there anyone out there who can help by thursday?

[rae]

Sorry didn't have the prac I had given it to a teacher and only just got it back Sorry will fax it now!!!

Lorrae

[lainyv]

forgot to say thankyou so much to lorrae for your help muchly appreciated....lorraine