Silver Nitrate, ACS, 99+%, 1 lb.

Terrible chemistry. This stuff turns light black Inside the closed bottle. I tighten the cap very well and a few days later it is some lite shade of black or lite purple/black... also the silver nitrate has reactions like clouds, discoloration and lack of strength in general. Not buying this again because made my amazing work look like a mature work... I'm sure the chemistry is compromised by factory contamination. I keep this in a dark dry cabinet away from any other chemicals to ensure zero tolerance of contamination. I bought other pure white ACS crystal and it pretty much confirms that this particular silver nitrate is compromised. That's Al I can say after buying 200 grams