[Plumbum]

So at this point I'm pretty clueless how I should continue.
I am pretty sure with glycerol but I dint know how to find out the seconds substance. I can exclude a lot but that doesn't help me that much.
Tomorrow I am going to test for halides And work with the Lucas reagent. I don't know how I could test for nitriles. ( though I still think my second substance is an an alcohol as well)

What would you guys recommend me ?

[Arkcon]

What would you guys recommend me ?

A suggestion, go back to you ridiculously space wasting post on the previous page, and actually trim that list:  cross off the ones you know don't apply, and then begin to work on it.  Looking at that list, you're not going to crack this problem, it just looks all the more daunting.

[pgk]

Arkon is absolutely right.