Silver nitrate

[cliveh]

I have a quantity of silver nitrate I don't need. How can I dispose of it safely?

 

[koraks]

If you want us to move this to the Classifieds so you can give it away, just hit "report" and indicate that this is what you want.

 

[xkaes]

I guess some haven't read about the current value of HIGH-OH-silver!!!

https://www.photrio.com/forum/threads/as-of-1-19-26-silver-is-89-oz.218185/

 

[mshchem]

It's got to be used by some wet plate salted paper person. Of course if you have a few grams dissolve it in water add salt and you get silver chloride which is pretty unreactive. Don't put silver nitrate in the trash it can start a fire. Unlikely but it's quite reactive

 

[koraks]

Of course if you have a few grams dissolve it in water add salt and you get silver chloride which is pretty unreactive.

Then put it in a sunny spot until the beaker is entirely black (or very dark brown), at which point it's just silver. Wait a few more days and the water will be clear with a black layer at the bottom. Dispose if in whatever way you fancy; it's basically harmless at this point.
The silver chloride is virtually harmless as well, but tends to leave nasty stains.