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wanting to knock up a batch of calcium hydroxide (Sorb) in my kitchen wanting to knock up a batch of calcium hydroxide (Sorb) in my kitchen
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Modified & Home Built Rebreathers: Discuss wanting to knock up a batch of calcium hydroxide (Sorb) in my kitchen in the Rebreathers - General Information forums: Watto dudes Ive got a couple of old plant pots full of old scrubber material kicking arround in my garage ...

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Old 12-02-08, 10:49 PM
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Question wanting to knock up a batch of calcium hydroxide (Sorb) in my kitchen
Watto dudes

Ive got a couple of old plant pots full of old scrubber material kicking arround in my garage which I belive this to be calcium carbonate, just wondering if there is a way for example dumping a load in a pan heating it up & splashing a little water on to re generate it into calcium hydroxide.

Plus is there any way of testing it other than re filling a container up & knocking it out on Ebay waiting to see if you get any negitive feedback ???

Not sugesting anyone does that... but come on Big Si you must know the answer ??????????
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Old 12-02-08, 11:20 PM
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erm long time since i did chemistry so apologies if wrong but


calcium carbonate CaCO3 + H20 gives Ca(OH)2 + CO2 which would relaese hydrogen gas also

feck my teacher was right I will need this later on in life aaarrggghhh why cant I remember this.
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Old 12-02-08, 11:36 PM
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Everybody just ignore him. He is a mad scientist, and if you encourage him we will all end up killing him!!

Dave - pack it in and go and buy the stuff.
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Old 12-02-08, 11:37 PM
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to make calcium hydroxide starting from calcium carbonate: heat up your CaCO3 (limestone) very hot eg in a limekiln.you then get calcium oxide (quicklime). add water (very carefully) and you get calcium hydroxide and lots of heat. CaO is caustic.

you don't get hydrogen. It's not practical as a kitchen experiment as you won't get it hot enough and lime (CaO) is relatively cheap as it's put on the land and used for traditional mortar for historic buildings
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Old 12-02-08, 11:54 PM
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May I suggest a copy of this book....

Dangerous Book For Boys




I am sure the instructions will be in there somewhere
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Old 13-02-08, 12:13 AM
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No fecking way I'd dive on home made scrubber.

50 quid (or whatever it is) delivered for 20Kgs. I reckon my life's gotta be worth more than that. Er, good luck...
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Old 13-02-08, 05:48 AM
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Quote:
Originally Posted by Scubee
May I suggest a copy of this book....

Dangerous Book For Boys




I am sure the instructions will be in there somewhere

quality ?????? green incoming
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Old 13-02-08, 05:56 AM
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Talking Its ok i would use gas mark 6
Quote:
Originally Posted by scubajay
Everybody just ignore him. He is a mad scientist, and if you encourage him we will all end up killing him!!

Dave - pack it in and go and buy the stuff.
No its allright I wouldn't try it myself. I would at least try couple of tubs on MSDKieth first. I would just have to tell him "Yeah check out this good shit" & see what happens........
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Old 13-02-08, 07:20 AM
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more like sopping wet suit diver :(
  

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I already have this book and the yearbook.


and Hywel ta for the reminder, its over 20 years sine I did chemistry and have forgotten more than I remembered



Quote:
Originally Posted by Scubee
May I suggest a copy of this book....

Dangerous Book For Boys




I am sure the instructions will be in there somewhere
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If at first you dont succeed,then failure may be your style.
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119 Kg: 7 down 19 to go
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Old 13-02-08, 08:04 AM
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Quote:
Originally Posted by David Parker
No its allright I wouldn't try it myself. I would at least try couple of tubs on MSDKeith first. I would just have to tell him "Yeah check out this good shit" & see what happens........
Well that sounds perfectly acceptable then

I would suggest wrapping it all up in foil (Shiny side in, of course) to keep more heat in, you're bound to reach the required temperatures then

Best of luck Dave, nice knowing you!
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