Date: Tue, 27 Jul 2004 15:55:51 -0400
Reply-To: "Galloway, Jan - Middlebury, CT" <Jan_Galloway**At_Symbol_Here**CROMPTONCORP.COM>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "Galloway, Jan - Middlebury, CT" <Jan_Galloway**At_Symbol_Here**CROMPTONCORP.COM>
Subject: FW: [DCHAS-L] Latex Glove degeneration

Debbie Decker-

Here is more information from our Rubber Chemicals section-

Jan Galloway

Product Safety and Regulatory Affairs
Crompton Corporation
(203)573-3619 phone
(203)573-4531 FAX

-----Original Message-----
From: Ohm, Bob - Middlebury, CT
Sent: Tuesday, July 27, 2004 1:16 PM
To: Galloway, Jan - Middlebury, CT; Hannon, Marty - Middlebury, CT
Subject: RE: [DCHAS-L] Latex Glove degeneration

With the onset of summer, ozone concentrations in the air become higher.
This is particularly true in areas with high levels of airborne particulates
(smog), usually more of an issue in the Los Angeles area (see,
rather than northern California.

Ozone will crack natural rubber (including latex) articles if they are
stored in the stretched state.  Ozone can be distinguished by cracks that
grow perpendicular to the direction of stretch.  Sunlight exposure can also
cause cracking, but in this instance the cracks are more random or hatched
in orientation, often like the skin of an alligator.

In unstretched articles, ozone can cause a whitish-gray discoloration of the
surface.  The remedy to prevent ozone attack (short of cleaning up the air)
is to incorporate into the rubber during fabrication a wax of defined
composition, e.g. a Sunproof® wax.

Very truly yours,
Bob Ohm
Crompton Corporation, Uniroyal Products
12 Spencer Street, TSSC Building
Naugatuck, CT  06770

phone:  800-243-5098
direct: 203-720-6825
fax:    203-720-6204
e-mail: bob.ohm**At_Symbol_Here**

visit our web site at
-----Original Message-----
From: Galloway, Jan - Middlebury, CT
Sent: Tuesday, July 27, 2004 9:33 AM
To: Ohm, Bob - Middlebury, CT; Hannon, Marty - Middlebury, CT
Subject: FW: [DCHAS-L] Latex Glove degeneration


Can you suggest a solution to this question??

Jan Galloway

-----Original Message-----
From: Debbie Decker [mailto:dmdecker**At_Symbol_Here**UCDAVIS.EDU]
Sent: Monday, July 26, 2004 7:40 PM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Latex Glove degeneration

Hi Gang:

Excusing the cross-posting....  We have researchers whose latex gloves,
rubber bands and other latex-containing articles degrade at an alarming
rate.  This is annoying.  Lately, a photographer in this building has found
her images degrading as well.  This is now causing consternation amongst
building occupants.

All the obvious have been checked - it is a laboratory building with
one-pass air and the degradation is not localized to a single floor or lab.

Ideas?  Don't be shy about suggesting the outrageous.


Debbie Decker
EH&S UCDavis
Co-Conspirator to Make the World A
Better Place -- Visit and join the conspiracy

Birkett's hypothesis: "Any chemical reaction
that proceeds smoothly under normal conditions,
can proceed violently in the presence of an idiot."

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