Richard mahaffey on tue 4 feb 97
Dear Ron Roy,
When I was a student at San Jose State U. Herbert Sanders used Molybdenum
in his Crysatline Glazes. As I recall it produced a metallic silver
color( take this with a grain of salt ) . The source to buy it was
Leslie's Ceramic Supply Co. in Berkeley, CA. They ADvertise in _Ceramics
Monthly_I can not recall the form it was in perhaps it was molydenum
sulfide (maybe not I suffer from CRS-can't remember science). I am
looking for notes if I find the form for it I will pass it on.
Rick Mahaffey, Tacoma Community College, Tacoma, WA 98466, USA
LizzardOL@aol.com on thu 6 feb 97
Leslie's lists Molybdenum Oxide in their current catalog. $5.95 for 0.25 lb,
$9.9.5 for 0.50 (one-half) lb. Address is 1212 San Pablo Ave, Berkeley, CA
94706. ph: (510) 524-7363. fax: (510) 524-7040. I haven't been following
this molybdemun thread, hope this helps somebody.
Liz Dodge in rainy (but warm) Berkeley, CA
Fred Paget on sun 9 feb 97
>From: LizzardOL@aol.com
>Leslie's lists Molybdenum Oxide in their current catalog. $5.95 for 0.25 lb,
>$9.9.5 for 0.50 (one-half) lb. Address is 1212 San Pablo Ave, Berkeley, CA
>94this molybdemun thread, hope this helps somebody.
>Liz Dodge in rainy (but warm) Berkeley, CA
I was at Leslie yesterday and asked Brian about the Moly oxide. He says he
has only one hard lump like a small rock left and can't get any more from
his supplier.
Some time ago someone suggested that you could buy moly sulfide powder in
pound lots (a lubricant) from automotive supply or industrial hardware
places. This would probably calcine into the oxide.
Fred Paget---Mill Valley,CA,USA
Stuart Altmann on tue 21 oct 97
Molybdenum trioxide and various other moly compounds are available from
Aldrich (800/558-9160). Molybdenum trioxide 99+% sells for $18.05 per 100g.
The metal itself (99+%) as 100 mesh powder sells for 24.70 per 100g--a
bargain compared with the oxide, if it suits your need.
Stuart Altmann
Edouard Bastarache on tue 4 mar 03
Hello all,
you are invited to visit our bilingual technological/toxicological =
report=20
on Molybdenum.
One more for The French Connection:
http://perso.wanadoo.fr/smart2000/molybdene.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
Malone & Dean on mon 18 aug 03
I was reading in Parmalee's glaze book that molybdenum can be used as a
'wetting agent' to reduce the surface tension in glazes and thus prevent
crawling. Anybody ever try this? Also where and in what form can you get it?
Thanks
Dean
www.lightwavepottery.com
Fredrick Paget on tue 19 aug 03
>I was reading in Parmalee's glaze book that molybdenum can be used as a
>'wetting agent' to reduce the surface tension in glazes and thus prevent
>crawling. Anybody ever try this? Also where and in what form can you get it?
>Thanks
>Dean
What with youngsters making fireworks,drug makers, and now
terrorists, it is getting hard to find any chemical suppliers that
will sell you an out of the ordinary chemical, unless you work for
industry. If they accept your credentials you will usually run into a
big minimum order.
If you can get a hold of some burned out street light bulbs the
support wires inside are moly. I think it will oxidize in air if
fired. Then you will have the oxide to try in a glaze.
Moly is available in a lubricant powder form - Molybdenum disulfide.
I suppose you can use the powder. Does anyone know what that would do
in a kiln? Probably get it in hardware or auto supply stores.
Tungsten is said to have the same sort of wetting agent property. I
was fortunate to be working at a place where they threw out a large
tungsten heating element from a cone 45 vacuum furnace, and I have
made the oxide by firing some of it in oxidation in the kiln. I have
tried it in crystalline glazes but as far as I can see it doesn't do
much.
Fred
--
From Fred Paget, Marin County, California, USA
fredrick@well.com
steve harrison on wed 20 aug 03
Dear Malone and Dean,
Are you aware how toxic molybdenum is?
regards
Steve Harrison
On Tuesday, August 19, 2003, at 04:01 PM, Malone & Dean wrote:
> I was reading in Parmalee's glaze book that molybdenum can be used as
> a
> 'wetting agent' to reduce the surface tension in glazes and thus
> prevent
> crawling. Anybody ever try this? Also where and in what form can you
> get it?
> Thanks
> Dean
> www.lightwavepottery.com
>
> _______________________________________________________________________
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>
Ababi on wed 20 aug 03
I wonder if the need of this material to improve the surface tension
plus workability of the glaze:
Why not using a software for the first and glycerin for the second?
Ababi Sharon
Glaze addict
Kibbutz Shoval Israel
ababisha@shoval.org.il
http://members4.clubphoto.com/ababi306910
http://www.matrix2000.co.nz/Matrix%20Demo/Ababi.htm
.
Edouard Bastarache on wed 20 aug 03
Hello Steve,
if you want decent information on this metal,
different from some of the crap we see here
once in a while from our beloved scarecrows,
go to:
1-http://perso.wanadoo.fr/smart2000/index.htm
or
2-http://www.digitalfire.com/education/toxicity/
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
Louis Katz on wed 20 aug 03
Dear Edouard,
Please let us know when you think things are inaccurate, fear mongering
or anything else. But referring to people as scarecrows is not really
productive even if you think its accurate. I have been off Clayart for
a long time and only recently back on, mostly because I miss the
community. I don't miss name calling.
I think you are often right when you say people are being much more
careful than necessary. I think the pendulum will always be swinging.
For some your statement about Molybdenum " Data are extremely limited
in regard to chronic toxicity from molybdenum and its compounds "
means a lot.
Personally I have put some items back in my chemical repertoire because
of some of your posts.
When I got back on clayart I told myself I would publicly speak up more
about the things that drove me from the forum.
Thanks
Louis
lkatz@falcon.tamucc,edu
On Wednesday, August 20, 2003, at 03:24 PM, Edouard Bastarache wrote:
> www.digitalfire.com/education/toxicity/
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