Almost time for Nitric

[EcoManiac]

I've come to realize that I'm soon going to have to pony up the $ for some nitric. My scrap 925 silver is starting to pile up. I ordered "Silver refining A to Z " from Lazersteves store, excellent by the way, and, well I'm obviously going to need nitric.
I'm reluctant to distil acids and make my own for safety reasons.
I see online Dudadiesel has 2500ml of 67.2% for $112. it also claims to include shipping.
Rocky Mountain Reagents has 2000ml of 70% for $58. + shipping.
I know this is expensive but it's the cost of doing my hobby so I don't realy mind. Are these prices over the top? any sudjestions? I work as a hazardous waste handler and more than likely will have it shipped to my office. I am in the U.S.A

 

[jeneje]

If you have a chemical supply store near you - you will be $$$$ ahead
Ken

 

[EcoManiac]

There are a couple locally but I haven't been able to contact them yet. I've driven by them but can't for the life of me remember where or the names of them.
It occurred to me after I posted that I had seen here on the GRF a 'Cold Nitric' recipe. I'm going to explore that as well or is the final product not going to meet my needs? I use sodium nitrate in my AR for gold recovery/refining and found it way too easy to add too much and sometimes reactions seem slow to complete, as an example.

 

[rickbb]

If you make it correctly it will be just fine. It yields ~50% strength.

Just depends on how much you need. Are you doing ounces of scrap, pounds, hundreds of pounds?

Will you be working in a gallon(s) sized cell, or 500ml beaker? That answer should tell you which way to go.

 

[Anonymous]

If you have Google available to you it should be pretty simple to find local sources that won't break the bank.

 

[kadriver]

I buy nitric acid from GFS Chemical. $220 for six 2.5 liter bottles delivered. But you must provide a business address as they will not deliver to a residence. They also sell dimethylglyoxime - DMG for precipitating palladium. I think I got 500 grams for about $60.

kadriver

 

[g_axelsson]

I buy nitric acid from GFS Chemical. $220 for six 2.5 liter bottles delivered. But you must provide a business address as they will not deliver to a residence. They also sell dimethylglyoxime - DMG for precipitating palladium. I think I got 500 grams for about $60.

kadriver

That sounded too good to be true and it was, https://www.gfschemicals.com/statics/productdetails/SODIUM_DIMETHYLGLYOXIME_169.html
DMG at $62/100g
I found DMG at eBay at $29/100g with free shipping. Haven't tried if it works yet but nothing points to it being fake.
http://www.ebay.com/itm/221640192295

Göran

 

[Slochteren]

Is this the same?

On german ebay 400 gr 40$.

http://www.ebay.de/itm/Dimethylglyo...691?pt=LH_DefaultDomain_0&hash=item3f45f3807b

 

[FrugalRefiner]

Is this the same?

On german ebay 400 gr 40$.

http://www.ebay.de/itm/Dimethylglyo...691?pt=LH_DefaultDomain_0&hash=item3f45f3807b

It's only about 38% DMG as stated in the description. It was discussed in the Dimethylglyoxime disodium salt octahydrate thread.

Dave