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Fleaker
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No ground glass will not do it, it will escape right out. You can store it temporarily in a phenolic cap that's been sealed with hot paraffin, but a
bakelite cap is best. I have a 500mL amber glass bakelite cap bottle that would suit you just fine.
Woelen, here's where to get small but outrageously expensive bottles (I doubt fisher will sell to you, so go through these people):
http://www.enasco.com/science/BrowseMinorIndex.do?majorIndex...
click reagent bottle, it has a solid teflon cap and pretty hefty walls, but only 100mL
Trust me though, they work very very (emphasis here) well holding iodine and bromine (7 months and it's still the same lvl). You can also keep the
bromine in the freezer (it will freeze, 19F).
Oh, chromium, fyi, ampouling your own bromine, I strongly advise against it, it's fumes are very irritating and with a small spill on yourself, and
you'll regret it for weeks (put a strong sodium thiosulfate solution on it immediately). I speak from experience here, bromine hurts. I suppose if you
chilled it to 0*C or so, it might be tolerable, but at room temperature, bad idea.
Actually $35 for 250mL is a good deal. Since I've seen it at $145 for 500mL bottle or thereabouts on several occasions, you were not ripped off. Don't
you think you bought a little much though? :-P
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mick
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I have stored 250 ml of Bromine for over 10 years, checked every year. The seal is PTFE covered silicone, the bromine is through the PTFE and is
attacking the silicone rubber, but nothing serious.
mick
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Nick F
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It seems to me that the cheapest and easiest way to buy bromine, and the easiest way to store bromine, is as a bromide salt. Potassium bromide seems
to go for about $10/kg, depending on the source, which is equivalent to over 200mL of bromine. Then you can easily produce bromine as and when it is
needed by oxidation, assuming that you have a bit of quickfit glass.
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lacrima97
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I have finally collected 20 dr.pepper bottles, and my stoppers should be in soon. Only problem is I think I am going to have to live with the writing
on them.
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ADP
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Perhaps acetone or something could remove this...? 
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Darkblade48
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| Quote: | Originally posted by ADP
Perhaps acetone or something could remove this...? |
If the bottles are LDPE (as most pop bottles are), the acetone will mar the surface of the plastic, since LDPE doesn't stand up too well to acetone.
HDPE, on the other hand, will not mar if you use acetone to rub off writing, sticky tape residue, etc.
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Lotek_
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he is useing some glass bottles with bizzare uber paint on them.
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woelen
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| Quote: | Originally posted by Fleaker
No ground glass will not do it, it will escape right out. You can store it temporarily in a phenolic cap that's been sealed with hot paraffin, but a
bakelite cap is best. I have a 500mL amber glass bakelite cap bottle that would suit you just fine.
Woelen, here's where to get small but outrageously expensive bottles (I doubt fisher will sell to you, so go through these people):
http://www.enasco.com/science/BrowseMinorIndex.do?majorIndex...
click reagent bottle, it has a solid teflon cap and pretty hefty walls, but only 100mL
Trust me though, they work very very (emphasis here) well holding iodine and bromine (7 months and it's still the same lvl). You can also keep the
bromine in the freezer (it will freeze, 19F). |
Thanks for the link. Very interesting bottles. Indeed a pity that they are so very expensive. That would cost me more on the bottles than on the
bromine (I need three of these for one ampoule).
| Quote: | | Actually $35 for 250mL is a good deal. Since I've seen it at $145 for 500mL bottle or thereabouts on several occasions, you were not ripped off. Don't
you think you bought a little much though? :-P |
One of the ampoules is for my element collection (apparently, the bromine is ampouled in colorless glass), which makes a really beautiful large
sample. The other is for experiments. Smaller ampoules were not available and asking the seller to open up such an ampoule is out of the question for
me. As long as the bromine is in the ampoules, it is safe to transport.
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lacrima97
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Ha, I tried acetone AD, and the only thing I can think of to get the paint off is to dissolve the bottles...:-/, which would defeat the purpose of
having them. The bottles are glass.
[Edited on 1/8/2006 by lacrima97]
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Fleaker
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Give the bottle an introduction to H2SO5 :-), that should remove anything organic on the outside of them, unless this is some sort of wierd metal
oxide glaze put on the bottles?
[Edited on 9-1-2006 by Fleaker]
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neutrino
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Lining the cap of an ordinary glass bottle with a teflon disc will make it impervious to bromine vapors. Would something like this be applicable in
your case? It is not so expensive or hard to do.
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Fleaker
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Neutrino, the amber glass bottle I had my bromine stored in had a PTFE-lined cap, but the vapors creeped around it and seriously messed up the
phenolic cap (literally ate a hole right through) despite keeping it frozen! I wouldn't say impervious to it, but it will definitely make the cap last
longer.
Nick F.: could you please post a source for that sodium bromide at $10/kg, or perhaps U2U me, I'm interested. TIA 
[Edited on 9-1-2006 by Fleaker]
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mick
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Try using a polypropylene cap with good seals rather than a phenolic cap
mick
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woelen
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The two bottles of bromine arrived yesterday . They are really cool samples of
bromine. Also somewhat scary, to have such massive amounts of bromine around. I must not think of one of these bottles breaking. These samples of
bromine are very old. They are from an old GDR (former Eastern Germany) lab, dated May 2th, 1971. I included some pictures of the huge bottle of
bromine (its total weight, including the glass bottle is almost 900 grams!).
http://woelen.scheikunde.net/science/chem/pics/bromine.html
I have two of these large bottles of bromine now. I'll try to break one of these carefully at its head and want to remove almost all bromine, besides
appr. 10 ml. Then I want to seal it again. Then I have two samples, one showing liquid bromine nicely, the other showing gaseous bromine much better.
I have two little bottles now, with caps, with a teflon disk in it, but not totally teflon-covered. I'll try how these bottles stand up against
bromine (I'll make a small quantity myself) and if they stand up against that well enough, then I'll open up one of these large ampoules of bromine.
Really cool to have this amount of Br2, it allows me to do many interesting experiments .
If someone has a suggestion for safely breaking the seal at the top, without shattering the entire bottle, then I would be pleased. In every case,
before I open up such a bottle, I'll freeze it in a freezer at -18 C. If something goes wrong, then at least I do not have bromine flowing around
everywhere (that would be a real disaster to my opinion  ).
[Edited on 20-1-06 by woelen]
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Esplosivo
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Of course it does! I envy you! That's some large quantity of bromine! Just to imagine all I ever head was approx. 25mL I produced from KBr  Bromine is so expensive unfortunately. Being 'old' (not that anything could have
happened to the sealed bromine!), you must have gotten it at a good price.
Edit: To open up the large 'ampoules' I would suggest one of those metal objects similar to a saw, which is used to cut the 'head' off an ampoulle.
I've got a whole collection of them, together with hundreds of ampoulles of the 'old' age (adrenaline, etc...) which I collect.
[Edited on 20-1-2006 by Esplosivo]
Theory guides, experiment decides.
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Rabidwolf
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use a file to make a small scratch at the height you want to break it at.
then using a red hot glass rod, touch the scratch.
a crack should form around the circumference of where the origonal scratch was made
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neutrino
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Vogel had a good section about this. I would upload the relevant text, but my copy of Vogel's 5th was accidentally deleted. Does anyone know where I
might find a copy?
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Darkblade48
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| Quote: | Originally posted by neutrino
Vogel had a good section about this. I would upload the relevant text, but my copy of Vogel's 5th was accidentally deleted. Does anyone know where I
might find a copy? |
I believe there's a copy floating around on axehandle's FTP in the books folder
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The_Davster
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Our library
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Nick F
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Scary. I'm glad I don't have that much elemental bromine!
Very cool though .
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lacrima97
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YAY
The bottles I mentioned as having the irremovable paint, finally shed a little paint. I accidentally let a little H2SO4 spill on one, and the paint
just smeared off.
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ADP
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Methyl Ethyl Ketone does wonders too.. Dissolves polyvinyl chloride among other things..
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kazaa81
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Some of the fear you have in storing certain chemicals can be undestand...but soon someone here will say "I would like to store my chemicals in a
space shuttle, with no gravity, so that it will not touch anything!"
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evil_lurker
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www.cynmar.com has some 4/8/16/33 oz narrow mouthed plastic safety coated 1000ml amber bottles with PTFE lined screw caps for $6.70 or so.
You won't find them on their website yet.. they are only in the 2006 printed catalog.
They look pretty tough in the catalog, I'll find out later this week.
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mick
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Best of luck
Sort out your storage, crack the ampuole and everything should be OK. A lung full of bromine is not recomended, worse that chlorine because chlorine
is a gas.
mick
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