Thanks Monona,
I feel better now, also.
Dan
---------------------------------
Dan
Environmental Programs Manager
Environmental Health & Safety Office
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, December
04, 2009
1:10 PM
To:
DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: Re: 2 RE:
[DCHAS-L]
Paraformaldehyde - carcinogen or not?
Read over the 280+ pages of the IARC monograph and
look at
all of the data gathered not only from the plywood industry studies but
many
other industries. Look at the whole picture and you will see why
they
found sufficient evidence that formaldehyde causes nasopharyngeal
cancer, a
rare cancer in humans, limited evidence for cancer of nasal cavity and
sinuses,
strong but not sufficient evidence for leukemia, and other
evidence. As a
result, they have determined that formaldehyde belongs in Group 1,
defined as
"carcinogenic to humans."
What is this discussion really about? Why wouldn't every chemist,
safety
professional, and college teacher want workers and students to know that
formaldehyde
and/or paraformaldehyde could be hazardous to their health?
What
motivates a safety professional or teacher to discount or diminish
potential
hazards? Does anyone think that college students are so unable to
deal
with risk that knowing paraformaldehyde might be a carcinogen would send
them
screaming into the streets? Hell, they think they are
immortal.
I personally think we should warn lab workers and students not only
about
chemicals that are actually listed by IARC, NTP or OSHA, but require
them to
take precautions with all of the chemicals they use because most of them
have
never been evaluated for cancer and other toxic effects. This is why the
EU
REACH program required testing of about 29,000 chemicals high production
volume
chemicals.
Every lab worker and student should know that only about 900 chemicals
have
been evaluated for cancer effects. Yet CAS recently registered
it's 50
millionth chemical. The last 10 million of these chemicals were
registered in 9
months at the rate of 25 chemicals per minute. The primary sources
for
these new chemicals were patents and chemical catalogs indicating some
are
already in use. They are out there with no cancer testing at all,
since
cancer tests take two years.
Even fewer chemicals have been studied for reproductive, developmental,
neurological, and other organ system damage on a chronic basis.
There is
a vast amount we don't know about chemicals. That's why diacetyl,
a
chemical isolated from butter, is now found responsible for a fatal lung
disease when inhaled. And why titanium dioxide thought to be a
completely
safe substitute for lead white in paints is now listed as an IARC lung
carcinogen. And so on, and on, and on.
But there is a simple answer to all of this in the lab, and that is:
"no
one was ever harmed by a chemical to which they were not
exposed!"
So do the process in the hood and put on the gloves, goggles, and any
other
protective equipment required. No exposure? No hazard.
Whew. Thanks. I feel a lot better now.
Monona
Rossol
As an aside, if formaldehyde WERE
a nasal
carcinogen
Best regards,
Roger
--
Advisor, Toxicology and Human Health Risk Analysis
13701
Tel: 505-296-7083
Fax: 505-296-9573
E-mail: roger.o.mcclellan**At_Symbol_Here**att.net
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