The Vespiary
The Hive => Newbee Forum => Topic started by: endo1 on October 17, 2003, 12:53:00 PM
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Any reason why a Tech grade 33% HBr in GAA from a professional well known supplier would be ummm... black? Can it be stored OK for a few months at room temp? It might have gotten a little warm in storage over the summer.... Is it still useable?
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I assume that bromine has formed by some kind of oxidation or by UV-irradiation (sunlight). Add some hypophosphorous acid to the solution and stir for a day, and hopefully the color will be gone. Then store the decolorized acid dark and cool.