Edward D. Cowell on wed 21 may 97
We have been taking an inventory of glaze supplies kept by our pottery co-op
and have come across some chemicals that have not been used for many years -
Flurospar, Lepedolite, Vamadium, Kryolite and Petalite. Is there any
information available on their toxicity and if they need any special
warnings attached to them. If we decide to dispose of them, how do we go
about it?
Laurie Cowell,
Waterloo, Ontario
Laura Freedman on thu 22 may 97
Edward D. Cowell wrote:
>
> ----------------------------Original message----------------------------
> We have been taking an inventory of glaze supplies kept by our pottery co-op
> and have come across some chemicals that have not been used for many years -
> Flurospar, Lepedolite, Vamadium, Kryolite and Petalite. Is there any
> information available on their toxicity and if they need any special
> warnings attached to them. If we decide to dispose of them, how do we go
> about it?
>
> Laurie Cowell,
> Waterloo, Ontario
-----------
Laurie, the information below is from McCann's "Artist Beware" book.
Fluorspar (calcium fluoride)
Relative Toxicity Rating
Skin - Moderate
Inhalation: high
Ingestion: high
Hazards - Skin irritant. Acute inhalation may cause lung
irritation;acute ingestion may cause gastric, intestinal, circulatory,
and nervous system problems and skin rashes. Chronic inhalation or
ingestion may cause loss of weight and appetite, anemia, and bone and
teeth defects. Gives off fluorine during firing.
LEPIDOLITE
Contents - free alkali and silica
Relative Toxicity Rating
Skin - moderate
Inhalation - high
Ingestion- moderate
Specific Hazards - Skin contact may cause burns. Inhalation and
ingestion may cause respiratory and gastrointestinal irritation. Chronic
inhalation may cause silicosis.
VANADIUM TETRACHLORIDE
Use- Iridescence
Relative Toxicity Rating
Skin-moderate
Inhalation-high
Ingestion-high
Specific Hazards. Corrosive to skin, eyes, respiratory, and
gastrointestinal systems. Inhalation causes both acute and chronic
problems, including irritation, pulmonary edema, asthma, shortenss of
breath, and bronchitis. Inhalation and ingestion may also turn the
tongue green and cause intestinal and heart problems.
Specific Precautions: Wear gloves when handling and use only with local
exhaust ventilation.
KRYOLITE-I have nothing on this one
PETALITE - Feldspathoids
Contents-free alkali and silica
Relative Toxicity rating
Skin-moderate
Inhalation-high
Ingestion-high
Specific Hazards-skin contact may cause burns. Inhalation and ingestion
may cause respiratory and gastrointestinal irritation. Chronic
inhalation may cause silicosis.
Perhaps someone else can help you with the problem of disposing of them
if that is what you choose to do. lauras@epix.net
Brooks Burgess on thu 22 may 97
At 12:12 PM 5/21/97 EDT, you wrote:
>----------------------------Original message----------------------------
>We have been taking an inventory of glaze supplies kept by our pottery co-op
>and have come across some chemicals that have not been used for many years -
>Flurospar, Lepedolite, Vamadium, Kryolite and Petalite. Is there any
>information available on their toxicity and if they need any special
>warnings attached to them. If we decide to dispose of them, how do we go
>about it?
>
>Laurie Cowell,
>Waterloo, Ontario
>
>If you decide to dispose of them, give them to me! Ive been searching for
cryolite, flourospar and lepedolite. Thanks
Brooks Burgess
Laura Conley on fri 31 jul 98
Hamer states that strontium is not toxic. I've heard rumors otherwise.
Does anyone know?
Also, I have heard that uranium, strontium, vanadium are all a bit
radioactive. Is this true? How radioactive? Are there any others?
Laura Conley
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