We are getting more and more of these surveys which ask us about our use
of restricted {black list} and controlled {grey list} substances in not
just our products, but also in our manufacturing processes.  They often
have a compliance statement they want us to sign.  These surveys seem
much more restrictive than the RoHS directive.
For example, things like CFC's, halons, and arsenic on "black" list, or
halogenated flame retardents on the grey list.  Or questions about the
use of PVC.
Many of these things are not in common use any more, I believe, but I
feel like I have to be a chemical engineer to know where to look for
this stuff.
Does anyone know what is driving this?  
Does anyone know any good place to look for resources to track down
where these substances might be found?
And finally, does the arsenide in GaAs diodes and transistors count
towards the "black list" arsenic?
Thanks in advance,

Genny

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