In the PCB industry 'TCE' stands for 'Thermal Coefficient of Expansion' not any particular substance.
Reff. IPC-T-50(F)
Thanks
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From: Fred Paul[SMTP:[log in to unmask]]
Sent: Monday, March 24, 1997 8:45 AM
To: Dolly Lefever
Cc: [log in to unmask]
Subject: Re: TCE
Dolly Lefever,
The only compound I can think of that might be referred to as TCE is
trichloroethylene, which is used for solvent extraction in many industries. It is a solvent for
fats, resins, oils, waxes, rubber, paints, and varnishes. It is a solvent for cellulose esters and
ethers. It has not been used in the Printed Circuit Board (PCB) Manufacturing industry for
many years (at least 15). If TCE refers to some other substance, please let me know what it is,
and I'll try and help you with a "where-used" list (from my perspective in the Printed Circuit
Board industry).
In the health industry, it is used in the manufacture of organic chemicals, pharmaceuticals,
such as chloroacetic acid. I'm not sure what this means, but Merck lists the following:
THERAP CAT: Analgesic (inhalation).
THERAP CAT (VET): Inhalant anesthetic.
My source of information (other than past experience) is The Tenth Edition of The Merck Index
I took the liberty to post this to the IPC TechNet speculating that someone may be able to give
you a more direct answer.
Fred J. Paul, Sr. Process Engineer
PCB Operations, FLUKE CORPORATION
direct: 206 356-5734 fax: 206 356-6070
[log in to unmask]
On Sat, 22 Mar 1997 10:19:43 -0800 Dolly Lefever wrote:
> From: Dolly Lefever <[log in to unmask]>
> Date: Sat, 22 Mar 1997 10:19:43 -0800
> Subject: TCE
> To: [log in to unmask]
>
> Hi I have TCE listed as a substance which suppresses my immune system.
> I'm ignorant as to what product(s) this is in and the most likely place
> that I may be in contact. I'm a health care provider.
> Would you have information regarding substances that still have TCE
> in them?
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