Dental alloy

[pinman]

I scored a small bottle in an obviously old cardboard box that says "1oz Troy clev-dent alloy for casting" the metal inside is greyish white shot. I can't find this product using a google search. Does anyone know this alloys composition? Or can anyone point me in the right direction?

 

[Harold_V]

The description you provided sounds like the bottle has been used to hold excess dental amalgam. Can you post a picture?

Harold

 

[pinman]

Will do asap. Would amalgam have the ability to be "packed" into a crevice? This material consists of solid metal shot.

 

[Scott2357]

Not sure what your shot in the bottle is, but dental amalgam is mixed as needed in paste form using a catalyst. It's slightly exothermic and hardens to a solid quickly. You have to test the shot to find it's composition. Could be the bottle was just a convenient place to put some loose ball bearings someone found.

 

[pinman]

Positive it's not ball bearings. The shot shows the characteristics/inconsistencies of molten metal being poured into water. I tested 3 pieces using pt, 14kt au, and ag test acids. tHe metal only reacted to the pt test but the material just darkened to a dull gray. I will post a picture asap. Thanks.

 

[pinman]

Sorry it took so long. heres the pictures.

 

[goldsilverpro]

Sure looks good, doesn't it?

 

[pinman]

It does to me, but I don't want to get my hopes up.

 

[goldsilverpro]

I think I would break off that little tail, dissolve it in hot aqua regia, and test it with stannous chloride.

 

[pinman]

I'm not sure if you can tell but, the solitary piece shows how the pt test acid dulled the finish.

 

[pinman]

Slight problem there. While I have been lurking for quite some time(and appreciate the knowledge gathered immensley!), I still have yet to find a source for nitric acid. I am limited to the use of AP solely. To be honest I would really like to explore the abilities of the AP process in regards to processing pgms. I have a few cats that i have gathered that I really want to play with.

 

[jimdoc]

Have you tried to melt a small piece?

 

[pinman]

no i guess ill try that right now

 

[61 silverman]

If you have a test Kit that contains a test stone, Make a streak on the plate by rubbing in a straight line.. leaving a line of metal .. You said that you have pt test solution , this is AR prepared for these kits.. It will disolve alloys containing Au -Pt -Pd , The Pt may require a little assistance with some heat, even a warm light bulb held close to the ONE SMALL DROP of solution will warm it enough ,with a little rocking back and forth,to dissolve all three metals.. Use a cotton swab absorb the drop ant test with stannous chloride, see my test results all dental scrap ALL WHITE..

 

[Palladium]

http://siris-libraries.si.edu/ipac20/ipac.jsp?uri=full=3100001~!280773!0#focus

 

[pinman]

it melted within seconds using a mapp/oxygen torch. The resulting bead is a matte white finish.

 

[pinman]

Yes I put shoes on before I went outside to melt the sample.

 

[jimdoc]

Well I don't think that is a good sign. I was going to say the shape of the shot looks like a lot of the indium shot on Ebay with the long tail.
Maybe its indium? That has a low melting point.
Jim

 

[pinman]

Palladium how do I view that? I cant figure out how to open it. Sorry if I am slow.

 

[pinman]

I appreciate the suggestion silverman but unfortunately my tin solder is burried in my storage locker atm.