[Jewelry making - Article 00754] - Re: [Orchid] Staining Sterling Silver a Green Color

[James Binnion]

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>     I use ammonium sulfate as a fertilizer in my garden. Is this the
>     same as ammonium polysulfide? If so, it can be purchased at any
>     garden center. 

    Two totally different compounds Ammonium Sulfate is (NH4)2SO4 and
    Ammonium Polysulfide (NH4)2Sx. 

    Ammonium Polysulfide is flammable and releases ammonia and hydrogen
    sulfide gasses. Its flash point is at room temperature (22C 72F)
    Depending on how concentrated a solution you find it could be very
    dangerous to handle. Both ammonia and hydrogen sulfide can kill you
    or cause serious lung damage. So do your due diligence and get an
    MSDS sheet before you order this stuff and make sure you are set up
    to handle it safely. In a quick web search I found several different
    concentrations of it some mixed with ammonium hydroxide (household
    ammonia) but in much higher concentrations than found in household
    ammonia this stuff can really burn your lungs be careful. 

Jim

James Binnion
jbin AT mokume-gane.com
James Binnion Metal Arts
http://www.mokume-gane.com
360-756-6550


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