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encapsulated cadmium....10 times more toxic than lead?!?!?!?!?

updated thu 9 feb 06


Craig Clark on tue 7 feb 06

Ron is, in my agitated estimation, far to polite here. Once again I
must RANT and SCREAM from the farthest reaches of cyberspace. Why would
anyone use something in a glaze that we KNOW is toxic. If I understand
the arguments correctly there really isn't any valid argument to be made
here beyond some type of esthetic preference, which cannot be made as a
justification by anyone who is conscientious in the most elementary way
when it comes to pottery.
If the ceramic piece on which a glaze bearing cadmium is of a design
which may be considered functional- bowls, plates, saucers, platters,
pitchers, etc.,- then there is NO excuse. It simple should not be done.
Rant over,
Craig Dunn Clark
619 East 11 1/2 St.
Houston, Texas 77008

TRon Roy wrote:

>Hi Lili,
>I find myself in agreement with David Hendley - be very careful and also
>have any ware tested once in a while to make sure you are under the lawful
>limit - if you must use it at all. I would not use it inside functional
>I do not think the crystals break down in a glaze - but - I have seen a
>microphotograph of the product - you can see the cadmium encased in the
>crystals - they used that photo in their advertising - but! - You can also
>see that all the crystals are not complete and there is some cadmium not
>I have also heard you can smell the cadmium when you open a container of
>encapsulated cadmium - a sure sign there is some not locked away.
>On the other hand - much better than using the unencapsulated form.
>Cadmium is about 10 times more toxic than lead by the way - consider it a
>highly toxic material.
>>Encapsulated Cadmium Stains were mentioned the other day.
>>Question: When those little guys first came on the market, it was bruited
>>they could be dissolved in some glazes, the encapsulation disintegrating
>>(it that is the right word) and cadmium being released into the glaze,
>>therefore making the glaze potentially hazardous, and in need of testing
>>if used for food related ware.
>>(Gee, that was a long sentence. Must catch my breath.)
>>OK. Was this true? If so, is it still true?
>>Lili Krakowski
>Ron Roy
>15084 Little Lake Road
>Brighton, Ontario
>K0K 1H0
>Phone: 613-475-9544
>Fax: 613-475-3513
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