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Reply-To: lancair.list@olsusa.com
From: "Gary Rodgers" <grodgers@epix.net>
To: "Lancair List" <lancair.list@olsusa.com>
Subject: chemicals and protection
Date: Sun, 9 Sep 2001 22:05:41 -0400
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Think that I have written this before, but a lot of the danger in the use of
solvents is the carrying into the body of other dissolved materials that the
solvent has been used to dissolve.  MC is used to decaffeinate coffee
because it leaves virtually no residue but dissolves and removes the
caffeine.  Both acetone and MC very readily pass through the skin.  Both
will flash off quite quickly and may leave behind those materials that have
been dissolved by the solvent.

http://pswmrl.arsup.psu.edu/Safety/glovesSOP.htm   These two links will take
you to information re chemicals and protection.  An excerpt from this first
link is below.

Methylene chloride:  double glove with heavier weight (8 mil) nitrile gloves
(incidental contact)
methylene chloride will permeate through nitrile gloves in 4 minutes or
less.  If you are double gloved, as recommended, and you splash or spill
methylene chloride on your gloves, stop what you are doing and change the
outer glove immediately.  If you allow methylene chloride to remain on the
outer nitrile glove for more than 2 to 4 minutes you must discard both sets
of gloves and re-double glove.  Methylene chloride permeates through
disposable latex exam gloves in a matter of seconds and latex gloves should
never be used to handle this material.
For use of methylene chloride where contact with the glove is anticipated,
such as stripping paint or gluing plastics, only polyvinyl acetate (PVA) or
viton gloves are recommended.  These gloves come in .28-.33 mm thickness.
PVA offers the best protection.

http://www.ehs.cornell.edu/lrs/chp/11.glove.table.PDF  This link will open a
.pdf table that lists recommended protection for various chemicals.

Gary Rodgers

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LML website:   http://www.olsusa.com/mkaye/maillist.html
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Please send your photos and drawings to marvkaye@olsusa.com.
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