From: Greg (czechsix@cox.net)
Date: Mon Feb 07 2005 - 23:40:34 PST
Spray Electrical contact cleaner is TCE + CO2. Good degreaser with no
remainder left over....wussies like me still use nitrile gloves with
it....right cliff? lol
Greg
----- Original Message -----
From: "Michael Howell, DO" <michael@tsixroads.com>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Monday, February 07, 2005 10:26 PM
Subject: Re: [MV] Solvent question
> I am not sure that anyone has really answered the question yet. Wasn't
> there a discussion about this before that mentioned an official
> recommendation for a replacement for dry cleaning solution.
>
> I have been doing some goggling and came up with a few questions of my
> own. I assume "dry cleaning fluid" that is mentioned in all of the TMs
> is PCE as in the following quote.
>
> The most common solvent used in the industry is PCE, which is also known
> as tetrachloroethylene. PCE is classified by the International Agency
> for Research on Cancer (IARC) as “probably carcinogenic to humans (Group
> 2A).” If this solvent makes its way to soil or groundwater, the material
> may break down over time to trichloroethylene (TCE) and then to
> dichloroethane, and finally to vinyl chloride, a known carcinogen.
>
> I used to thing the old break cleaner was the same thing as dry cleaning
> fluid and used it as such but tonight I learned it was TCE. I have been
> using the new "TCE free" break cleaner in its place but I don't like it
> as well. I did find a can of break cleaner at Wal Mart that seemed to
> imply it was TCE. I will get the can and report back after I post this.
>
> I also found the following:
>
> 1.1 WHAT IS STODDARD SOLVENT?
> Stoddard solvent is a widely used, man-made organic solvent that comes
> from the refining of crude oil. It is a
> petroleum mixture made from distilled alkanes, cycloalkanes
> (naphthenes), and aromatic compounds. The chemicals in
> Stoddard solvent are similar to those in white spirits, which are also
> discussed in this profile. Stoddard solvent is
> commonly referred to as dry cleaning safety solvent, naphtha safety
> solvent, petroleum solvent, PD-680, varnoline, and
> spotting naphtha. It also goes by the registered trade names Texsolve S
> and Varsol 1. Stoddard solvent is used as a
> paint thinner, as a solvent in some types of photocopier toners, in some
> types of printing inks, in some adhesives, as a
> dry cleaning sollvent, and as a general cleaner and degreaser. It is
> produced and used as a colorless, flammable liquid
> but will turn into a vapor (gas) at temperatures ranging from 150-200°C.
> Stoddard solvent smells and tastes like
> kerosene. You can smell it when the level in the air is about 0.34 parts
> of Stoddard solvent in a million parts of air
> (ppm) or 2 milligrams of Stoddard solvent per cubic meter of air
> (mg/m3). See Chapters 3 and 4 for more information
> on the physical and chemical properties of Stoddard solvent and how it
> is produced and used.
>
> For more than you ever wanted to know here is the full text of the above:
>
> http://www.atsdr.cdc.gov/toxprofiles/tp79.pdf
>
>
> A link about TCE
>
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