From: GRINOLG@ROSV.ADVCIR.COM[SMTP:GRINOLG@ROSV.ADVCIR.COM]
Reply To: ComplianceNet E-Mail Forum.;GRINOLG@ROSV.ADVCIR.COM
Sent: Thursday, February 05, 1998 5:59 AM
To: johnsha@merix.merix.com
Subject: [CN] formaldehyde emissions
Hello Compliance Net:
Does anyone out there have emission factors (or experience developing
them) for formaldehyde from an electroless copper plating operation?
The line uses open top tanks with lip exhausts. Any help would be
appreciated. Thanks.
Date: Thu, 5 Feb 1998 13:04:44 -0800
I source-tested our electroless bath exhausts about 3 years ago. I
tested while the baths were online and offline. The reason for the two
tests is that when we take our baths offline, we blow air through them
to prevent plate-out. I found that the formaldehyde concentration was
very low in both cases (~1 ppm offline, and ~2 ppm online). What this
told me is:
I hope this helps. Contact me with any further questions.
John Sharp
Date: Thu, 5 Feb 1998 15:24:31 -0500
1.PCFAB Aug 1989 - Formaldehyde Consumption in Electroless Copper
2. "Atmospheric Releases of Formaldehyde in Electroless Copper Plating
Operations" David Cooper, Roger Wayson, PJ Sutch, John Dietz, Doug Bauman
Kathleen Cheze - University of Central Florida, Civil & Environmental
Engineering Department , Orlando Florida
This paper was jointly sponsored by EPA and AESF so it may be available
through either organization.
We our a supplier of electroless copper, specifically Circuposit 3350, and
based on our calculations, 63% of the formaldehyde is consumed (through
reactions) to plate 100 millionths of copper.
Hopes this helps.
Rose Perkins
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From: "Sharp, John"
Subject: FW: [CN] formaldehyde emissions
* It's very difficult to strip formaldehyde out of an electroless
bath. Other companies have verified this. I believe that Lee Wilmot of
Hadco found a similar situation.
* The side reactions (Cannizaro, etc.) that go on in the
electroless bath are major consumers of the formaldehyde. At least as
much formaldehyde is consumed by these reactions as the plating
reactions.
Merix Corp., Forest Grove, OR
503-992-4351 Telephone
503-359-1040 FAX
john.sharp@merix.com
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From: "
Subject: Re: formaldehyde emissions
X-To: GRINOLG@ROSV.ADVCIR.COM
X-cc: gfisher@shipley.com
There have been a few papers written on this subject:
Env. Eng Manager