DCHAS-L Archives Dec 04 2009 - Re: Paraformaldehyde

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Roger, Thank you for injecting a note of sanity! Ed --- On Thu, 12/3/09, roger.o.mcclellan**At_Symbol_Here**ATT.NET wrote: From: roger.o.mcclellan**At_Symbol_Here**ATT.NET Subject: Re: [DCHAS-L] Paraformaldehyde - carcinogen or not? To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU Date: Thursday, December 3, 2009, 5:53 PM To all:=A0=A0 Just to refresh the memory of some folk s, recall formaldehyde is present=A0in=A0the 1 carbon metabolic cycle so ou r bodies contain lots of formaldehyde.=A0I understand that=A0 formaldehyde has been measured in exhaled breath at 1-2 ppb. The dose does make the pois on!!=A0=A0=A0=A0=A0=A0=A0=A0=A0 Roger McClellan-- Advisor, Toxicology and Human Health Risk Analysis 13701 Quaking Aspen Place NE Albuquerque, NM 87111 Tel: 505-296-7083 Fax: 505-296-9573 E-mail: roger.o.mcclellan**At_Symbol_Here**att.net =A0-------------- Original message from ACTSNYC**At_Symbol_Here**CS.COM: ------------- - Of course it is a carcinogen.=A0 The EU is shortening their testing list by figuring out that if a chemical breaks down to release or is metabolized t o release a carcinogen, the chemical itself is a carcinogen.=A0 That is how their very elegant Dye Directive effectively bans hundreds of untested dye s from use on materials that will be next to the skin.=A0 The Directive has a list of 22 carcinogens, and all you have to do is look at your dye, see where the azo bonds are likely to break and what's left over, and you will know even without testing whether or not you can use the stuff. The EU, which actually registers all chemicals proposed for use in products in commerce is up to 140,000 and counting.=A0 But only about 900 chemicals have had any sort of cancer testing.=A0 There isn't enough time or rats in the universe to test 140,000 chemicals, so there has to be some short cutt ing.=A0 And this is one of the ways. If a chemical breaks down to release a carcinogen, it's a carcinogen.=A0 Monona Rossol In a message dated 12/3/2009 12:40:46 PM Eastern Standard Time, dmdecker**At_Symbol_Here**UC DAVIS.EDU writes: This comes up every so often, with strong feelings on both sides, because p araformaldehyde evolves formaldehyde gas (slowly) in solution, under some c ircumstances. =A0 What say you? =A0 Debbie Decker EH&S UCDavis (530)754-7964 FAX (530)752-4527 dmdecker**At_Symbol_Here**ucdavis.edu Co-Conspirator to Make the World A Better Place -- Visit www.HeroicStories.com and join the conspiracy =A0 --0-2103347554-1259931516=:49834

Roger,

Thank you for injec ting a note of sanity!

Ed

--- On Thu, 12 /3/09, roger.o.mcclellan**At_Symbol_Here**ATT.NET <roger.o.mcclellan**At_Symbol_Here**ATT.NET> wrote:

From: roger.o.mcclellan**At_Symbol_Here**ATT.NET & lt;roger.o.mcclellan**At_Symbol_Here**ATT.NET>
Subject: Re: [DCHAS-L] Paraformaldehyde - carcinogen or not?
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Date: Thursday, Decemb er 3, 2009, 5:53 PM

< /div>
To all:
Just to refresh the memory o f some folks, recall formaldehyde is present in the 1 carbon meta bolic cycle so our bodies contain lots of formaldehyde. I understand t hat formaldehyde has been measured in exhaled breath at 1-2 ppb. The dose does make the poison!!
Roger McClellan
--
Advisor, Toxicology and Human Health Risk Analysis
13 701 Quaking Aspen Place NE
Albuquerque, NM 87111
Tel: 505-296-7083
Fax: 505-296-9573
E-mail: roger.o.mcclellan**At_Symbol_Here**att.net

-------------- Original message from ACTSNYC**At_Symbol_Here**C S.COM: --------------

Of course it is a carcinogen. The EU is shortening their testing list by figuring out that if a chemi cal breaks down to release or is metabolized to release a carcinogen, the c hemical itself is a carcinogen. That is how their very elegant Dye Di rective effectively bans hundreds of untested dyes from use on materials th at will be next to the skin. The Directive has a list of 22 carcinoge ns, and all you have to do is look at your dye, see where the azo bonds are likely to break and what's left over, and you will know even without testi ng whether or not you can use the stuff.

The EU, which actually regi sters all chemicals proposed for use in products in commerce is up to 140,0 00 and counting. But only about 900 chemicals have had any sort of cancer t esting. There isn't enough time or rats in the universe to test 140,0 00 chemicals, so there has to be some short cutting. And this is one of the ways.

If a chemical breaks down to release a carcinogen, it's a carcinogen.

Monona Rossol

In a message dated 12/3/2 009 12:40:46 PM Eastern Standard Time, dmdecker**At_Symbol_Here**UCDAVIS.EDU writes:

This comes up every so often, with strong feelings on both sides, because paraformaldehyde evolves forma ldehyde gas (slowly) in solution, under some circumstances.

< br>
What say you?

Debbie Decker

EH&S UC Davis

(530)754-7964

FAX (530)752-4527

dmdecker**At_Symbol_Here**ucdavis ..edu

Co-Conspirator to Make the World A

Better Place -- Visi t www.HeroicStories.com and join the conspiracy

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