[Zyraj]

Hey guys!!
I am learning chemistry by myself and accidentally bought a liter of ammoium sulfide diluted at 40%, I know its toxic, explosive and so, the bottle has all the information, but rather than disposing of it I would like to give it some use, any ideas? Stink bombs are discarded lol, maybe extracting sulphuric acid or nitrogen from it? consider I dont have a lab but home stuff only and some basic electrolysis homemade devices.
It was kinda expensive thats why I'm not throwing it away 
Any ideas?

[chenbeier]

Using for blackening of copper or brass relief