[Jewelry making - Article 00306] - Re: [Orchid] Nitric Acid Disposal Dilemma

[Dennis Loss]

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    We have arguements about this type of thing on the post but I will
    still tell you what I was told to do by a chemist. He told me to
    simply dilute the acid into oblivion. Increase the water content
    slowly [is it water to acid or acid to water] but get the ratio to
    about 1 cup of whatever your solution to about 10 gallons of water.
    If you started with a 10 percent solution of acid in a cup of water,.
    If my math is correct by increasing the water ration by 32 times the
    acid is now.003 percent strength. The pharmicist said that this was
    so low that fertilizers have more nitric content. If you want to add
    baking soda then it wouldn't hurt but if you do it earlier you will
    have a heat generating reaction and could spill acid all over the
    place. 

Good luck. 
Dennis
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