Bromine water - disposal
Bromine water - disposal
Morning everyone!
Yr 12 chem is doing a prac this afternoon with cyclohexene, cyclohexane and bromine water, I am sure you know the one I am talking about... I feel a bit lucky as the lady before me had purchased some already made up bromine water, so I dont have the hussle of making that up. But I am however a bit conserned as how to dispose of the waste once they are finished with it. CSIS doesnt say, at least not what I can find, it does say that solutions of <0.1% can be washed down the sink, but what do you guys do with solutions stronger than that???
Sassi
Yr 12 chem is doing a prac this afternoon with cyclohexene, cyclohexane and bromine water, I am sure you know the one I am talking about... I feel a bit lucky as the lady before me had purchased some already made up bromine water, so I dont have the hussle of making that up. But I am however a bit conserned as how to dispose of the waste once they are finished with it. CSIS doesnt say, at least not what I can find, it does say that solutions of <0.1% can be washed down the sink, but what do you guys do with solutions stronger than that???
Sassi
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Re: Bromine water - disposal
Dilute it with bucket loads of water? I'm not sure... I don't remember how we get rid of it.
Re: Bromine water - disposal
We're doing that same experiment this morning! I use a solution of sodium thiosulfate to decolourise the bromine water and then flush it down the sink.
If you look at Appendix E in CSIS you'll find Disposal of Waste Chemicals. Bromine water comes under "16 Oxidising Agents".
Carol
If you look at Appendix E in CSIS you'll find Disposal of Waste Chemicals. Bromine water comes under "16 Oxidising Agents".
Carol
Re: Bromine water - disposal
After mixing with organics it should go into Halongenated organic waste
Re: Bromine water - disposal
Thank you all for your input! I was thinking halogenated too, told the teacher and she muttered something like 'that doesnt sound right to me...' so then I got unsure. Just goes to show you cant listen to the teachers, shouldn't have doubted myself, grrrr!
Sassi
Sassi
- Labbie
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Re: Bromine water - disposal
Disposal number 23 for both Cyclohexane & Cyclohexanene, Hold ready for collection, Your could even try evaporation in your fume cupboard.
Regards Labbie
Lab Manager/Lab Tech, mind reading etc etc
Now retired
Lab Manager/Lab Tech, mind reading etc etc
Now retired
- fibreweb
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Re: Bromine water - disposal
We did that same experiment this morning too
I make the bromine water up from ampoules of bromine then put it into dropper bottles.
The waste from the test tubes that are mixed with Cyclohexane and cyclohexene go into our organic waste bottle. I put the dropper bottles back into the chemical store cupboardand then when the time comes around next year the water is completely clear so I can dispose of it down the sink and then fill my labelled bottles with the fresh solution.
Wierd thing though, It was initially wanted for first lesson yesterday so I made it up on friday but by monday morning it had totally lost all its colour and was useless! I don't know why, maybe I had the magnetic stirrer going too fast and caused most to vapourise or what ever it does, or left it too long before I put itinto the bottles.
It meant I had to do it all again this morning, Gown, gloves, rebreathing mask, the whole PPE, much to the amusement of the Yr 12 chem class
Wendy
I make the bromine water up from ampoules of bromine then put it into dropper bottles.
The waste from the test tubes that are mixed with Cyclohexane and cyclohexene go into our organic waste bottle. I put the dropper bottles back into the chemical store cupboardand then when the time comes around next year the water is completely clear so I can dispose of it down the sink and then fill my labelled bottles with the fresh solution.
Wierd thing though, It was initially wanted for first lesson yesterday so I made it up on friday but by monday morning it had totally lost all its colour and was useless! I don't know why, maybe I had the magnetic stirrer going too fast and caused most to vapourise or what ever it does, or left it too long before I put itinto the bottles.
It meant I had to do it all again this morning, Gown, gloves, rebreathing mask, the whole PPE, much to the amusement of the Yr 12 chem class
Wendy
Re: Bromine water - disposal
Wendy try storing in the fridge
- fibreweb
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Re: Bromine water - disposal
I had made it with Distilled water from the fridge and the ampoule had also been in the fridge. Then into brown bottles and back into the fridge.
Todays worked a treat though.
Wendy
Todays worked a treat though.
Wendy
- Xenon
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Re: Bromine water - disposal
There's a real easy method under 'Bromine' in CSIS Appendix F: just add a few drops of H2O2 & H2SO4 to dilute KBr solution.
I dispose of products in Halogenated Organic Waste bottle, and leave test tubes in fume cupboard to evaporate off residue. Cyclohexene is particularly horrible stuff.
I dispose of products in Halogenated Organic Waste bottle, and leave test tubes in fume cupboard to evaporate off residue. Cyclohexene is particularly horrible stuff.
Xe, SD, KOPR
Re: Bromine water - disposal
Great tip, Xenon.
I make ours up using KBr, bleaching powder & sulfuric acid, but I've just read Appendix F, and think I'll give that quick method a go this time.
Many thanks,
I make ours up using KBr, bleaching powder & sulfuric acid, but I've just read Appendix F, and think I'll give that quick method a go this time.
Many thanks,
Liz
Life keeps getting better every day!
Life keeps getting better every day!