search  current discussion  categories  glazes - crystalline 

crystalline silica & man-made & asbestos ii

updated fri 17 aug 01


Edouard Bastarache on thu 16 aug 01

Hello Matt,

something I forgot to say yesterday.

Many chemicals may be present in man-made fibers,
which is not the case for asbestos fibers.
During the fabrication process many chemicals may be added=20
and they may account for up to 25 %
of the weight of these man-made fibers,
which may also be termed inorganic non-metallic
artificial fibers.

The chemicals added may be:
1-Antistatic agents
2-Antifungic agents
3-Hydrophobic agents
4-Anti-dust agents( mineral oils, polypropylene glycol)
5-Binders(urea-formaldehyde and epoxy resins, bitumen)

So, it is not an easy task to study the toxicity of these=20
man-made fibers.


Edouard Bastarache
Irreductible Quebecois