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Laboratory Tips Safety proceedures, test reagents, drilling rubber stoppers, bending glass tubes, etc. Contributed to by chemists.

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 #1 
Old 2003-10-09, 17:24
Fixxxed6 Fixxxed6 is offline
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Default help help HELP

i just attempted an i2 extraction and all i got out was a gray goop.

are these the crystals or just junk

can i fix it?

the goop is sitting in a coffee filter above my beaker.

thanks!!!!!

oh yeah i used 2%
 #2 
Old 2003-10-09, 17:40
stillbill stillbill is offline
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Default Re: help help HELP

Bill has only used 7%, but he says the grey goop is definitely your crystals. Flush this goop w/plenty of dh20, then pour off water. Do this 4 or 5 times. Then filter this goop if you can with the corner of a sheet, squeeze as hard as you can. Get all of the mositure out of this you can. Then put grey

matter(crystals) in 2 or 3 folded coffee filters inside of jar of dried epsom salts in a dark room as needed. You'll have to change coffee filters regular as they will

have remaining moisture in them. You will see

Also, these crystals are light sensitive
 #3 
Old 2003-10-09, 20:39
kman kman is offline
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Default Re: help help HELP

Make sure your container is air tight.
 #4 
Old 2003-10-09, 20:50
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California
Default Re: help help HELP

Listen to bill and kman....they are right on. I would add, that in your jar that you decide to store it in....you can place some baked epsoms salt at the bottom of it. Then place your iodine crystals (wrapped in a filter)of course...in the jar.

Switrd's jar has a piece of brown paper bag cut to exact size, then wrapped around the jar....thus making light unable to enter.
 #5 
Old 2003-10-10, 06:38
kman kman is offline
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Swim puts his powdered MgSO4 in a twisted shut coffee filter and puts this in the bottom of the container, then the I2, then another twisted shut coffee filter of the powder on top. Waste not, want not.
 #6 
Old 2003-10-10, 07:58
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California
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"Swim puts his powdered MgSO4 in a twisted shut coffee filter and puts this in the bottom of the container, then the I2, then another twisted shut coffee filter of the powder on top. Waste not, want not"

yeah...thats a great idea too....*taking notes*
 
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