ave369
Eastern European Lady of Mad Science
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Spill of chromic acid - cleanup
My lab's right now messy, since I'm on meds and everything in my head is somewhat cloudy. Every now and then I make a blunder. Today I spilled a small
amount (10ml) of chromic acid on my lab table. Immediately covered with bicarbonate of soda.
Any further treatments? Maybe use some reducer to convert it to trivalent chromium?
Smells like ammonia....
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Amos
International Hazard
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Sodium sulfite or metabisufite is generally used. If you can wipe everything up, you can also toss the paper towels or whatever you use into a beaker
with some dilute sulfuric acid, and add ethanol until you're satisfied with the color (which should be green to blue, no hint of brown). I also
recycle all of my hexavalent chromium after it has been reduced to make chromium(III) hydroxide, which is a nice thing to have.
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shivam
Harmless
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Along with the purchase of any hexavalent chromium, purchase of some Sodium sulfite/ metabisulbite is almost crucial ..
Just in case of any mishaps or simply for reducing the Cr(VI) waste..
Use a solution of sulfite/metabisulfite to clean it up (of cource with gloves) or just spray the spilled area with plenty of ethanol or rubbing
alcohol (isopropanol) solution
leave it until it turns green with no visible orange/brown spots
Then simply wipe it away!!
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