The Vespiary

The Hive => Chemistry Discourse => Topic started by: Bwiti on August 12, 2002, 01:11:00 AM

Title: Storage of Ethyl Bromide?
Post by: Bwiti on August 12, 2002, 01:11:00 AM
Besides the usual "should be stored in a cool, dry, well-ventilated area in tightly sealed containers", is there anything else I should know about storage of this chem? Is there something I could add to home-made ethyl bromide to preserve it for a few months?

Love my country, fear my government.
Title: very tightly!
Post by: hypo on August 12, 2002, 01:19:00 AM
it should be stored in very tightly sealed containers!
i had evaporate 20 ml into the lab atmosphere over some months  :o .
if you used drones method, you should shake it with 1/5th volume
of conc. H2SO4 to remove possible ether and then wash with
sodium (bi)carbonate and water.

it should be realtively stable, distill before use.

couch terrorist
Title: This compound will be fun to work with .
Post by: Bwiti on August 12, 2002, 01:44:00 AM
This compound will be fun to work with[sarcasm]. Thanks for the heads-up! 8)

Love my country, fear my government.
Title: Alkyl halogenides are often stored over a piece ...
Post by: Osmium on August 12, 2002, 02:05:00 AM
Alkyl halogenides are often stored over a piece of silver foil. Dunno why though.

I'm not fat just horizontally disproportionate.
Title: Silver in alkyl halides
Post by: Ritter on August 12, 2002, 05:12:00 AM
I'm not exactly sure of the mechanism, however storing alkyl halides with a small amount of silver wire or copper shot prevents discoloration and decomposition of the organics.  For example, I have seen numerous bottles of alkyl iodides from Aldrich, the most recent reagents were all shipped with a few copper beads(shot) rolling around in the bottom of the bottle.  The copper has completely prevented any discoloration from forming over a 5 year period.
Title: Ethylbromide
Post by: hest on August 12, 2002, 11:58:00 PM
I have a 25L flask from the 1950's still nice and clear. It's just standing in a basment.