Daffodile
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Unknown metal identification
Okay so usually I'm pretty good at this but today I'm not. I have a bunch of melty metal bits after a really old German shot glass I found that I was
using as a crucible melted at pretty low temperatures. I'd like to know what metal it iswas. Here's what I got:
Density: 8.24 g/ml
Observations: Turns grey black in acid, slight reactivity with Hydrochloric Acid, although barely. Grey layer forms when explosed to air for awhile,
although it still retains some luster.
Any ideas?
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Daffodile
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Oh yeah there's also some wierdness with Sulfur, it managed to react with a sulfur containing dye that I was burning to form a sulfide that reacted
with acids.
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Neme
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Is it pure metal or alloy?
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Daffodile
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I dont know but I'm assuming its pure or a well known alloy as this was mass
produced a long time ago.
It melts far under red head, and at continued heating, the oxide layer can be skimmed off to give an unreactive shiny molten bead. I'm really hoping
this is a silver tin alloy
[Edited on 10-12-2016 by Daffodile]
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unionised
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Pewter?
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DraconicAcid
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That's the reasonable assumption for a shot glass.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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ave369
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Is there any color in the acid when you try the reaction?
Smells like ammonia....
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Daffodile
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The surface turns black but solution is colourless
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Chlorine
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What you're describing sounds a lot like pewter. That would explain why a class crucible was used. Also pewter barely reacts with hydrochloric acid.
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unionised
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Nickel silver would have a rather higher melting point.
http://solarmfg.com/wp-content/uploads/2011/01/Critical-Melt...
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DraconicAcid
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Copper usually means green, but it
would be the last metal to react.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
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Sulaiman
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appologies - I realised that it is probably not nickel silver and deleted my post before anyone caught it ... I thought 
CAUTION : Hobby Chemist, not Professional or even Amateur
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Daffodile
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Definitely pewter, although probably a zincy tiny antimonyey variety. Thanks guys.
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Liamatpm
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It could be lead pewter, that is used in cup before they were banned in a couple of places.
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froot
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I agree, at that density leaded pewter.
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