DCHAS-L Discussion List Archive

This is a prime reason for reviewing the MSDSs for the material.  Use a
steam or water bath instead of a hot plate.  This should reduce the
level.  Likewise the work should be carried out in a fume hood that can
adequately remove the vapors and keep the concentration of flammable
solvents below the LEL.

Nathan J Nunn
STL EHS Director
Cell (832) 746-4976
Fax (713) 436-3592
-----Original Message-----
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On Behalf Of
ACTSNYC**At_Symbol_Here**CS.COM
Sent: Friday, March 10, 2006 10:51 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Questions out of my realm

All,

I got the following two questions from a colleague and since I work in
the

art field, these are out of my area.  Can I get some help?

1.  a student was boiling ether in a large open flask on a stirrer
hotplate

and the fume alone caught on fire, inside the hood. .  Do you have
suggestions

for them to reduce the ether amount for re-crystallization in a safer
manner?

2. a student in was quenching butyl lithium with n-propanol in an open
flask

and it also caught on fire.  Is there a safer way to quench the butyl
lithium

w;ithout catching on fire?

Monona Rossol



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