Sciencemadness Discussion Board

Detecting Hydrazine hydrate in alcoholic solution

Rhodanide - 12-3-2017 at 13:38

Good afternoon.
I just made some Hydrazine solution, by the method of reacting NaOH and Hydrazine sulfate in hardware store grade denatured alcohol.
I need a way of being sure it's there. I can't use litmus paper because there may be residual NaOH and that would throw the reading off.
I have access to lots (200 grams +/-) of AgNO3, which I believe is used to test for it. Please, let me know! Thanks.
-Azide

Elemental Phosphorus - 13-3-2017 at 06:29

It appears trinitrobenzene sulfonic acid can be used to test. Hydrazine should dissolve lithium and turn solution black. I know lithium reacts with water but it should still dissolve at least a little bit.

Rhodanide - 13-3-2017 at 07:23

Quote: Originally posted by Elemental Phosphorus  
It appears trinitrobenzene sulfonic acid can be used to test. Hydrazine should dissolve lithium and turn solution black. I know lithium reacts with water but it should still dissolve at least a little bit.

I don't have that.
My hydrazine is in alcohol.
I need a way of detecting it, and I think I've found two ways do do that.
Hydrogen peroxide or CuSO4.