John Baymore on fri 8 may 98
------------------
(clip)
Try Antimony Oxide too, although if you are afraid of Barium, you might
want to research Antimony first before using it. I
suspect it is slightly volitile.
(snip)
Good advice.... to research Antimony before just using it. A little
research will provide some important information a ceramist probably would
be happy to know up front. =22Forewarned is forearmed=22.
In fact, good idea to research most any material before working with it.
Or sticking it inside a mug and selling it to someone.
Best,
......................john
......whose computer is back among the living=21 More or less :')
John Baymore
River Bend Pottery
22 Riverbend Way
Wilton, NH 03086 USA
603-654-2752
JBaymore=40Compuserve.com
Fay & Ralph Loewenthal on sun 10 may 98
Watch out folks here is another of those lead type
chemicals. Antimony oxide is poisonous. Do not use this
except for for purely ornamental items. Use extreme caution
when making up into a glaze. Use gloves and mask etc.
Please folks be very careful how you phrase your advice
on the list. There are some newbies who do not know of the
dangers of antinomy, lead and barium compounds. Please
always include warnings and do not assume that everybody
else knows as much as you do (my worst failing). Ralph in
PE SA
dianamp@COMCAST.NET on mon 17 may 04
I think that antimony is too dangerous to use (for the potter),
not just for the product. Maybe someone else knows for sure,
but my recollection is that it very toxic just in handling.
Diana
Ron Roy on fri 21 may 04
Hi Diana,
It is often contaminated with arsenic. I think it is correct to assume it
is highly toxic - not as bad as some but right up there.
Anyone thinking of using it should know what the problems can be - so they
can take the proper precautions or leave it alone.
RR
>I think that antimony is too dangerous to use (for the potter),
>not just for the product. Maybe someone else knows for sure,
>but my recollection is that it very toxic just in handling.
>
>Diana
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
Edouard Bastarache Inc. on fri 21 may 04
Hi Ron,
check this :
BECAUSE OF THE POSSIBILITY THAT ARSENIC COULD ACT AS A COCARCINOGEN WHEN
ANTIMONY DUSTS AND FUMES ARE INHALED, THE PHYSICAL STATE OF ARSENIC IN
ANTIMONY TRIOXIDE WERE INVESTIGATED. EFFORTS TO REMOVE ARSENIC EITHER BY
DISSOLUTION OR BY SUBLIMATION WERE UNSUCCESSFUL. ON BASIS OF THIS
INFORMATION & NEGATIVE ACUTE, ORAL TOXICITY TESTS IN ANIMALS, IT WAS
CONCLUDED THAT ARSENIC EXISTS IN ANTIMONY TRIOXIDE IN A PHYSICALLY &
TOXICOLOGICALLY INERT FORM.
[American Conference of Governmental Industrial Hygienists. Documentation of
the Threshold Limit Values and Biological Exposure Indices. 5th ed.
Cincinnati, OH:American Conference of Governmental Industrial Hygienists,
1986. 34]**PEER REVIEWED**
I am not yelling, it is just the original text I copied/pasted was in
capital letters.
But, it is true that many antimony ores may contain appreciable amounts of
arsenic and lead.
Later,
"Ils sont fous ces quebecois"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker
Sorel-Tracy
Quebec
edouardb@sorel-tracy.qc.ca
http://sorel-tracy.qc.ca/~edouardb/
http://perso.wanadoo.fr/smart2000/index.htm
http://www.digitalfire.com/education/toxicity/
Ron Roy on mon 24 may 04
Thanks Edouard,
The question becomes - what happens when it's fired - does the lead and
arsenic remain inert or are they released as fumes?
Are they released from an unstable glaze into food?
It is not clear - and then there is the poisonous nature of antimony - one
of which is adverse reproductive effects.
Dust and fumes are the means of entry - and in some cases absorption
through the skin.
What we need to know is what happens when it is in the lungs or stomach -
does it fume and at what temperature.
I think it is better to assume the worst and take appropriate precautions.
I did not say don't use it - I said understand what it is.
RR
>BECAUSE OF THE POSSIBILITY THAT ARSENIC COULD ACT AS A COCARCINOGEN WHEN
>ANTIMONY DUSTS AND FUMES ARE INHALED, THE PHYSICAL STATE OF ARSENIC IN
>ANTIMONY TRIOXIDE WERE INVESTIGATED. EFFORTS TO REMOVE ARSENIC EITHER BY
>DISSOLUTION OR BY SUBLIMATION WERE UNSUCCESSFUL. ON BASIS OF THIS
>INFORMATION & NEGATIVE ACUTE, ORAL TOXICITY TESTS IN ANIMALS, IT WAS
>CONCLUDED THAT ARSENIC EXISTS IN ANTIMONY TRIOXIDE IN A PHYSICALLY &
>TOXICOLOGICALLY INERT FORM.
>[American Conference of Governmental Industrial Hygienists. Documentation of
>the Threshold Limit Values and Biological Exposure Indices. 5th ed.
>Cincinnati, OH:American Conference of Governmental Industrial Hygienists,
>1986. 34]**PEER REVIEWED**
>
>I am not yelling, it is just the original text I copied/pasted was in
>capital letters.
>
>But, it is true that many antimony ores may contain appreciable amounts of
>arsenic and lead.
>
>
>
>Later,
>
>
>
>"Ils sont fous ces quebecois"
>Edouard Bastarache
>Irreductible Quebecois
>Indomitable Quebeker
>Sorel-Tracy
>Quebec
>edouardb@sorel-tracy.qc.ca
>http://sorel-tracy.qc.ca/~edouardb/
>http://perso.wanadoo.fr/smart2000/index.htm
>http://www.digitalfire.com/education/toxicity/
>
>______________________________________________________________________________
>Send postings to clayart@lsv.ceramics.org
>
>You may look at the archives for the list or change your subscription
>settings from http://www.ceramics.org/clayart/
>
>Moderator of the list is Mel Jacobson who may be reached at melpots@pclink.com.
Ron Roy
RR#4
15084 Little Lake Road
Brighton, Ontario
Canada
K0K 1H0
Phone: 613-475-9544
Fax: 613-475-3513
Edouard Bastarache Inc. on wed 14 jul 04
Hello all,
my latest articles on Smart.Conseil's site,
Antimony & Inorganic Compounds and Antimony Trioxide in French and =
English :
http://perso.wanadoo.fr/smart2000/antimoine.htm
Later,
"Ils sont fous ces quebecois"
Edouard Bastarache
Irreductible Quebecois
Indomitable Quebeker
Sorel-Tracy
Quebec
edouardb@sorel-tracy.qc.ca
http://sorel-tracy.qc.ca/~edouardb/
http://perso.wanadoo.fr/smart2000/index.htm
http://www.digitalfire.com/education/toxicity/
Steve Slatin on sat 11 sep 04
Maybe praseodymium? I know it's used on welder's
goggles, and I believe the oxide's yellow.
Steve S.
--- Lili Krakowski wrote:
> No antimony glaze that I know of is leadfree. In
> other words the great, beautiful antimony yellows
> all were lead glazes.
>
> I have had nice yellows with high calcium, mg free,
> low boron glazes. I use that pro something yellow
> that is unspellable.
> Prosydeum? Something like that. NOT in studio, NOT
> near catalogs. Small amounts of stain work best,
> and do try a pale yellow slip under a transp.
>
> Lili
>
>
______________________________________________________________________________
> Send postings to clayart@lsv.ceramics.org
>
> You may look at the archives for the list or change
> your subscription
> settings from http://www.ceramics.org/clayart/
>
> Moderator of the list is Mel Jacobson who may be
> reached at melpots@pclink.com.
>
=====
Steve Slatin -- Entry-level potter, journeyman loafer, master obfuscator
Sequim, Washington, USA
48.0937°N, 123.1465°W or thereabouts
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Lili Krakowski on sat 11 sep 04
No antimony glaze that I know of is leadfree. In other words the great, =
beautiful antimony yellows all were lead glazes.
I have had nice yellows with high calcium, mg free, low boron glazes. I =
use that pro something yellow that is unspellable.
Prosydeum? Something like that. NOT in studio, NOT near catalogs. =
Small amounts of stain work best, and do try a pale yellow slip under a =
transp.
Lili
Snail Scott on sun 12 sep 04
At 04:55 PM 9/11/2004 -0400, you wrote:
>I have had nice yellows with high calcium, mg free, low boron glazes. I
use that pro something yellow that is unspellable.
>Prosydeum?
Praseodymium. -Snail
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