[Jewelry making - Article 00979] - Re: [Orchid] [Source] Ferric nitrate

[John Donivan]

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>     I bought some once and it worked well, but be careful!!! Highly
>     toxic and I believe explosive! Also you should have someone tell you
>     how to dilute it correctly- I think you add the chemical to water
>     and not the other way around. 

    Just FYI - anhydrous ferric chloride (crystals) pick up water vapor
    from the air, and form hydrogen chloride mist in the process -
    that's the gas that makes hydrochloric acid. I doubt it's any huge
    quantities, but don't stick your nose in it, either. Mixing it with
    water is an exothermic reaction - it generates heat. That's the same
    thing that mixing acid with water is - exothermic. So ferric
    chloride is not explosive in the sense that nitroglycerine is, but
    it can "explode" in the same way that pouring water into acid can.
    It generates so much heat so fast that it "explodes". A before W -
    acid into water. Slowly, with constant stirring. 

http://www.donivanandmaggiora.com
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