03-29-04 14:13
No 498006
SWIM has a in-construction home-made ducted fume hood. Its approx 3' long, about 2' deep, and about 4' high. SWIM claims its made with 1/8th of an inch thick stainless steel sheets.
SWIM was wondering what type of ducting setup/filtration system should be used to remove the fumes from reactions with chems such as KCN and Ether?
SWIM specifically told me they dont want to bring down the neighborhood with their vented reactions.
Any help appreciated by SWIM.
(Chief Bee)
03-29-04 17:54
No 498029
Cyanides are removed by bubbling the exhaust through an aqueous solution of any soluble iron salt, such as FeSO4. Ether is so volatile it will be hard to trap using anything short of a dry ice cold trap (UTFSE).
The Hive - Clandestine Chemists Without Borders
(Hive Bee)
03-29-04 21:13
No 498046
Use some kind of interchangeable cartridge in the exhaust line for fumes, bubbler as rhodium said for the KCN, as for ether how much are you venting?? if your using a fan to suck it out make damn sure its sparkless... If its simply removal of the solvent you could vent it out, vapours will rise and disperse....
Rhodium, couldnt one use a dryice cooled alcohol bubbler trap? then when wanting to remove the ether from it, add water? vent what ether doesnt dissolve?
(Stranger)
03-29-04 22:22
No 498052
SWIM is still checking out fans for the hood. SWIM was thinking of going with 2 - 100CFM sparkless fans placed in the top of the fume box, connected each to an individual tin tube ducting and into a bathroom ventilation system, but has no clue where to begin searching for such fans.
SWIM also is unaware of what sized ducting to use with such fans. SWIM wonders if there is any general rule of thumb for what sized ducting to use for what CFM fan?
(Fragile ego)
04-03-04 01:22
No 498823
If you have city water, then you might want to aspirate the ether vapors down the drain because they can bee stinky.
http://www.democracynow.org/ - The Exception to the Rulers