Re: [SergentEng] Re: Hexavalent Chromium


Dale Buxton
 

Hexavalent Chromium was the main topic of poisoning discussed in the movie "Erin Brockovich". PG&E, (Pacific Gas and Electric) once used it in some cleaning process in Natural Gas Production. After PG&E lost the landmark lawsuit against it, California put the chemical on the list of forbiddens in that state. Hexavalent Chromium is know to cause a whole stream of bazar cancers and birth defects. It is indeed VERY bad stuff. But the rusty appearance on the Couplers was an oxide of the chemical and not the actual chemical itself. But, better safe than sorry. So good on you Frank!

Dale Buxton
--------------------------------------------

On Thu, 1/1/15, Daryl Blake nsu581@... [SergentEng] <SergentEng@...> wrote:

Subject: Re: [SergentEng] Re: Hexavalent Chromium
To: "SergentEng@..." <SergentEng@...>
Date: Thursday, January 1, 2015, 6:49 PM


 









Thanks Frank. I'll move on.
On
01/01/2015, at 12:47, "fsergent@...
[SergentEng]" <SergentEng@...>
wrote:
















 






Hi group,
The
plating that we used to use to get the nice rusty brown
color on the couplers contained hexavalent chromium, which
is known to the state of California to be a bad stuff. There
is an outdated discussion about this on our website. Go to
SergentEngineering.com.
Click "Frequent Questions" and then
"Safety".
At
one time, this was a very common surface treatment for die
cast parts. Carburetors are a common part that some people
are familiar with that were almost always
"chromated" olive drab.
Today, anything we sell that is
"Rusty Brown" is painted. None of the parts that
Sergent Engineering sells today have the chromate finish. I
have mixed feelings about this because the color of the old
couplers really was nice.
Frank
























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