When Cementing Silver

[Profikiskery]

I can't seem to find a definite answer on this. I noticed when melting the silver with the Nitric and distilled water, of course the work is done in a hood. I get that part.

But once the silver is liquefied, and you add the distilled water to cool it down....folks are decanting and stirring and what not OUTSIDE the hood. So my question is at that point... when its time to drop in the copper, is that fluid safe to be around as far as vapors go? Like stock pots, or even silver that is cementing for the 24 hours. Can you be around that stuff?

I have watched Kariders videos as well as Aqullias and notice when the silver is melted, they are decanting and transferring liquids from one flask to the other outside the hood. They are wearing gloves and protective clothing..I can see that. I just don't know if they have a room vent fan on...or a respirator because you never see.

Thanks in advance,
Craig

 

[the iron dwarf]

the silver is not melted, it is disolved

 

[Profikiskery]

Ok...your right...dissolved then. But can you help me with an answer? I just want to be safe....

 

[MarcoP]

Case 1, dissolving a silver alloy with nitric does generate NOx gasses and it must by done under a fume hood or within a closed reaction vessel.

Case 2, cementing silver with copper, metal displacement, will still initially generate NOx vapors but not as much as in Case 1. Even if generally you could be around when cementing it's always a better idea to stay away from it, eg.: never put you head right on top of a reaction vessel, if you want to look inside then do it from the sides with a flash light.

 

[Palladium]

Did you watch this one? My lab is 1,000 Cubic ft and my exhaust fan pull 3,000 cubic ft a min. Hence my air exchanges completely in my shop 3 times a min. Their is always stray gases!

[youtube]http://www.youtube.com/watch?v=8UVK18cAeEA[/youtube]

 

[Profikiskery]

Marco thank you for your answer.

Palladium I didn't know you were the Aquilla Refining video man. I have seen ALL of your videos and am a huge fan. Thank you for the time you take to help people. I did know you had that big old fan from watching that exact video. I just didn't know if it was needed during that particular process.

I don't have that kind of a set up and have been doing everything outside until I can build a hood, but I am freezing my patooty off and was hoping that part of the process could be done safely in shelter. Looks like I am going to have to get a better insulated patooty... :lol:

Thank you both for helping me.

 

[jungle_Dave]

Did you watch this one? My lab is 1,000 Cubic ft and my exhaust fan pull 3,000 cubic ft a min. Hence my air exchanges completely in my shop 3 times a min. Their is always stray gases!

[youtube]http://www.youtube.com/watch?v=8UVK18cAeEA[/youtube]

Palladium, complements on your video! Don't know how I missed that one.
I've been cementing a few small batches of silver nitrate, I dissolved everything outside. Noxx is about the nastiest stuff I have come across in the lab, (probably why you dislike silver ) I was cementing it out in my adapted laundry room with the window open the next day the fumes were horrible. I didn't think that the cementation process would generate as much gas as it did.

Lesson learned!

If you don't have a fume hood or great air circulation, do it outside.

PS, Im building your vacuum bottle , brilliant set up!

Best wishes,

Dave