Posted by Eeyore on September 24, 2007, 3:41 pm
"R.H. Allen" wrote:
> Eeyore wrote:
> > drydem wrote:
> >
> >> Cadmium telluride solar panels require 100 times less semiconductor
material
> >> than high-cost crystalline silicon panels....
> >
> > Contains cadmium, therefore can't be sold in any country or state with RoHS
> > legislation unless exemptions are granted. LOL !
> The current EU cadmium directive applies only to metallic cadmium,
That's certainly not my understanding.
I know a company using (tiny) CdS and CdSe in their optocouplers and they had to
apply for an exemption.
Graham
Posted by R.H. Allen on September 24, 2007, 4:28 pm
Eeyore wrote:
>
> "R.H. Allen" wrote:
>
>> Eeyore wrote:
>>> drydem wrote:
>>>
>>>> Cadmium telluride solar panels require 100 times less semiconductor
material
>>>> than high-cost crystalline silicon panels....
>>> Contains cadmium, therefore can't be sold in any country or state with RoHS
>>> legislation unless exemptions are granted. LOL !
>> The current EU cadmium directive applies only to metallic cadmium,
>
> That's certainly not my understanding.
Well, here's the directive:
http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uriÎLEX:31991L0338:EN:HTML
As far as I can tell, it applies only to cadmium pigments and metallic
cadmium, just as I'd been informed. My understanding is that it's just
been incorporated into REACH, but that it was not changed in the process.
> I know a company using (tiny) CdS and CdSe in their optocouplers and they had
to
> apply for an exemption.
An exemption from ROHS or an exemption from the EU cadmium directive? My
understanding is that they'd need an exemption from the former, but that
the latter does not apply to them. Or perhaps there's another regulation
I'm not aware of -- this kind of stuff isn't what I do on a daily basis
-- but in my recent conversations on cadmium and lead these two and
REACH are the only ones that have come up.
Posted by Eeyore on September 24, 2007, 5:43 pm
"R.H. Allen" wrote:
> Eeyore wrote:
> > "R.H. Allen" wrote:
> >> Eeyore wrote:
> >>> drydem wrote:
> >>>
> >>>> Cadmium telluride solar panels require 100 times less semiconductor
material
> >>>> than high-cost crystalline silicon panels....
> >>> Contains cadmium, therefore can't be sold in any country or state with RoHS
> >>> legislation unless exemptions are granted. LOL !
> >> The current EU cadmium directive applies only to metallic cadmium,
> >
> > That's certainly not my understanding.
> Well, here's the directive:
> http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uriÎLEX:31991L0338:EN:HTML
> As far as I can tell, it applies only to cadmium pigments and metallic
> cadmium, just as I'd been informed. My understanding is that it's just
> been incorporated into REACH, but that it was not changed in the process.
There are several references in it to "cadmium and its compounds". e.g. ........
The following substances are added to Annex I to Directive 76/769/EEC:
'24. Cadmium (CAS No 7440-43-9) and its compounds
... substances containing cadmium is prohibited, if their cadmium content
(expressed
as Cd metal) exceeds 0,01 % by mass
> > I know a company using (tiny) CdS and CdSe in their optocouplers and they
had to
> > apply for an exemption.
> An exemption from ROHS or an exemption from the EU cadmium directive?
RoHS is what I was told.
> My understanding is that they'd need an exemption from the former, but that
> the latter does not apply to them. Or perhaps there's another regulation
> I'm not aware of -- this kind of stuff isn't what I do on a daily basis
> -- but in my recent conversations on cadmium and lead these two and
> REACH are the only ones that have come up.
Interesting.
Graham
Posted by R.H. Allen on September 24, 2007, 6:47 pm
Eeyore wrote:
>
> "R.H. Allen" wrote:
>
>> Eeyore wrote:
>>> "R.H. Allen" wrote:
>>>> Eeyore wrote:
>>>>> drydem wrote:
>>>>>
>>>>>> Cadmium telluride solar panels require 100 times less semiconductor
material
>>>>>> than high-cost crystalline silicon panels....
>>>>> Contains cadmium, therefore can't be sold in any country or state with RoHS
>>>>> legislation unless exemptions are granted. LOL !
>>>> The current EU cadmium directive applies only to metallic cadmium,
>>> That's certainly not my understanding.
>> Well, here's the directive:
>>
>> http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uriÎLEX:31991L0338:EN:HTML
>>
>> As far as I can tell, it applies only to cadmium pigments and metallic
>> cadmium, just as I'd been informed. My understanding is that it's just
>> been incorporated into REACH, but that it was not changed in the process.
>
> There are several references in it to "cadmium and its compounds". e.g.
........
>
> The following substances are added to Annex I to Directive 76/769/EEC:
> '24. Cadmium (CAS No 7440-43-9) and its compounds
... which is followed by a list of uses for which cadmium and its
compounds are prohibited, none of which have anything to do with
electronics.
> ... substances containing cadmium is prohibited, if their cadmium content
(expressed
> as Cd metal) exceeds 0,01 % by mass
And the first half of that sentence specifies that this particular limit
applies to polymers and copolymers of vinyl chloride that use cadmium or
cadmium compounds as a stabilizer.
>>> I know a company using (tiny) CdS and CdSe in their optocouplers and they
had to
>>> apply for an exemption.
>> An exemption from ROHS or an exemption from the EU cadmium directive?
>
> RoHS is what I was told.
That makes sense to me, based on what I've been told, but RoHS is a
different animal from the directive above.
Sorry if I confused the issue -- I probably didn't need to drag the
cadmium directive into the discussion in the first place, but I had it
on the brain thanks to a recent conversation with someone else....
Posted by Eeyore on September 24, 2007, 8:29 pm
"R.H. Allen" wrote:
> Eeyore wrote:
> > "R.H. Allen" wrote:
> >> Eeyore wrote:
> >>> "R.H. Allen" wrote:
> >>>> Eeyore wrote:
> >>>>> drydem wrote:
> >>>>>
> >>>>>> Cadmium telluride solar panels require 100 times less semiconductor
material
> >>>>>> than high-cost crystalline silicon panels....
> >>>>> Contains cadmium, therefore can't be sold in any country or state with
RoHS
> >>>>> legislation unless exemptions are granted. LOL !
> >>>> The current EU cadmium directive applies only to metallic cadmium,
> >>> That's certainly not my understanding.
> >> Well, here's the directive:
> >>
> >>
http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uriÎLEX:31991L0338:EN:HTML
> >>
> >> As far as I can tell, it applies only to cadmium pigments and metallic
> >> cadmium, just as I'd been informed. My understanding is that it's just
> >> been incorporated into REACH, but that it was not changed in the process.
> >
> > There are several references in it to "cadmium and its compounds". e.g.
........
> >
> > The following substances are added to Annex I to Directive 76/769/EEC:
> > '24. Cadmium (CAS No 7440-43-9) and its compounds
> ... which is followed by a list of uses for which cadmium and its
> compounds are prohibited, none of which have anything to do with
> electronics.
It was YOUR cite.
So, you're saying you cited something irrelevant ?
Graham
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> > drydem wrote:
> >
> >> Cadmium telluride solar panels require 100 times less semiconductor