[Jewelry making - Article 00358] - Re: [Orchid] Sodium bisulfate

[Tony]

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    Sodium bisulphate (NaHSO3)is used for all sorts of processes
    including ceasing fermentation in cheap wine, but I've never heard of
    it for use in metalsmithing. 

    I'd urge care. It decomposes very rapidly into sulfur dioxide gas
    (SO2) and sodium hydroxide (NaOH.) 

    Most people are highly affected (this is NOT an allergy) by the gas
    which dissolves in the mucus of the lungs to form Sulphurous
    acid(H2SO3.) 

    Result? Wheezing, tissue burn etc! 

Tony Konrath

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