Llewellyn Kouba on tue 4 dec 07
I found a small vile of
something in my studio and wonder what it is?
Marked: Cu(NH3)4 ++ SO4 says 87% yield 10.5 gr. March 1959 - has a
very deep blue color.
Can it be useful for anything in glazes etc?
Llewellyn Kouba
Abbey Pottery
Angela Davis on fri 7 dec 07
Sounds like Bluestone, I found this information on
Digital Fire.
BLUE STONE, CUPRIC SULFATE
Hazards
a.. Copper Sulfate
Miscellaneous
a.. Family: Flux Source
b.. Region: None
c.. Mined At: Unspecified
d.. Raw Mineral: No
e.. Generic: No
Notes
CuSO4.5H2O
Cpper II sulfate pentahydrate is the most correct name.
Copper sulfate is a blue crystalline powder or granulate. It slowly =
effloresces in air. It can be easily dehydrated to its gray anhydrous =
form by heating, then changed by to crystals by adding water. It is =
soluble in water, methanol, slightly soluble in alcohol and glycerol.
It is made by exposing copper or copper oxide to a dilute sulfuric acid =
and then evaporating and the crude sulfate to purify by =
recystallization. Many grades are available and huge amounts are =
manufactured so that less pure grades and inexpensive.
Copper sulfate is used in agricultural chemicals, feeds, germicides; in =
the textile and leather industries, in pigments, electric batteries, as =
a reagent in analytical chemistry, in medicine, as a wood preservative, =
for engraving and lithography; in the mining and petroleum industries; =
for use in synthetic rubber; steel manufacture; and in asphalts. The =
anhydrous salt is used as a dehydrating agent.
Copper sulfate is employed in ceramics for metallic coloration and is =
sometimes sprayed as a solution or used as a creamy paste on biscuit for =
pit firing.
http://ceramic-materials.com/cermat/material/239.html
Sounds like your ready for some pit firing.
Angela Davis
In Homosassa FL
----- Original Message -----=20
From: Llewellyn Kouba=20
To: CLAYART@LSV.CERAMICS.ORG=20
Sent: Tuesday, December 04, 2007 12:31 PM
Subject: Re: Can you identify this chemical
I found a small vile of something in my studio and wonder what it is?
Marked: Cu(NH3)4 ++ SO4 says 87% yield 10.5 gr. March 1959 - has a =
very deep blue color.
Can it be useful for anything in glazes etc?
Llewellyn Kouba
Abbey Pottery
=
_________________________________________________________________________=
_____ Clayart members may send postings to: clayart@lsv.ceramics.org You =
may look at the archives for the list, post messages, or change your =
subscription settings here: http://www.acers.org/cic/clayart/ Moderator =
of the list is Mel Jacobson who may be reached at melpots2@visi.com
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12/6/2007 10:11 AM
Edouard Bastarache Inc. on fri 7 dec 07
Hey Loub,
check this out : http://scripts.iucr.org/cgi-bin/paper?S0365110X55000571
Cupric tetrammine sulfate monohydrate.
Gis la revido,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.sorel-tracy.qc.ca/~edouardb/Welcome.html
http://perso.orange.fr/smart2000/livres.htm
http://www.pshcanada.com/Toxicology.htm
http://www.ceramique.com/librairie/
http://www.flickr.com/photos/30058682@N00/
http://myblogsmesblogs.blogspot.com/
----- Original Message -----=20
From: Llewellyn Kouba=20
To: CLAYART@LSV.CERAMICS.ORG=20
Sent: Tuesday, December 04, 2007 12:31 PM
Subject: Re: Can you identify this chemical
I found a small vile of something in my studio and wonder what it is?
Marked: Cu(NH3)4 ++ SO4 says 87% yield 10.5 gr. March 1959 - has a =
very deep blue color.
Can it be useful for anything in glazes etc?
Llewellyn Kouba
Abbey Pottery
=
_________________________________________________________________________=
_____ Clayart members may send postings to: clayart@lsv.ceramics.org You =
may look at the archives for the list, post messages, or change your =
subscription settings here: http://www.acers.org/cic/clayart/ Moderator =
of the list is Mel Jacobson who may be reached at melpots2@visi.com=20
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2007-12-06 23:15
Steve Slatin on fri 7 dec 07
I believe that's called tetrammine copper sulphate. You might try it
used more or less as copper sulphate is used in pit firings and so
forth.
The firing will release hydrogen sulphide and that (NH3) is ammonia,
so I'd keep a healthy distance from that firing. (Yes, I know that
the quantities are small.)
Just my 2 banii. Steve Slatin
Llewellyn Kouba wrote:
I found a small vile of something in my studio and wonder what it is?
Marked: Cu(NH3)4 ++ SO4 says 87% yield 10.5 gr. March 1959 - has a very deep blue color.
Can it be useful for anything in glazes etc?
Llewellyn Kouba
Abbey Pottery
______________________________________________________________________________ Clayart members may send postings to: clayart@lsv.ceramics.org You may look at the archives for the list, post messages, or change your subscription settings here: http://www.acers.org/cic/clayart/ Moderator of the list is Mel Jacobson who may be reached at melpots2@visi.com
Steve Slatin --
History teaches us that there have been but few infringements of personal liberty by the state which have not been justified ...
in the name of righteousness and the public good, and few which
have not been directed ... at politically helpless minorities.
-- Harlan Fiske Stone
---------------------------------
Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.
Ivor and Olive Lewis on sat 8 dec 07
Dear Llewellyn,
You ask <what it is it. Marked: Cu(NH3)4 ++ SO4>>
Cupra-ammonium Sulphate
Aka Cupric Tetrammine Sulphate Monohydrate.
This is a complex double salt. See Linus Pauling. "General Chemistry" =
for more information.
I suppose it could be used as a glaze ingredient or as a fungicide.
Best regards,
Ivor Lewis.
Redhill,
South Australia.
Llewellyn Kouba on sun 9 dec 07
Thanks Steve for the
identification of my chemical as Copper sulphate and I will give it a
try in an outdoor raku situation.
Llewellyn
Steve Slatin wrote:
type="cite">
I believe that's called tetrammine copper sulphate. You might try it
used more or less as copper sulphate is used in pit firings and so
forth.
The firing will release hydrogen sulphide and that (NH3) is ammonia,
so I'd keep a healthy distance from that firing. (Yes, I know that
the quantities are small.)
Just my 2 banii. Steve Slatin
Llewellyn Kouba <lkouba@ASSUMPTIONABBEY.COM> wrote:
I found a small vile of something in my studio and wonder what it is?
Marked: Cu(NH3)4 ++ SO4 says 87% yield 10.5 gr. March 1959 - has a very deep blue color.
Can it be useful for anything in glazes etc?
Llewellyn Kouba
Abbey Pottery
______________________________________________________________________________ Clayart members may send postings to: clayart@lsv.ceramics.org You may look at the archives for the list, post messages, or change your subscription settings here: http://www.acers.org/cic/clayart/ Moderator of the list is Mel Jacobson who may be reached at melpots2@visi.com
Steve Slatin --
History teaches us that there have been but few infringements of personal liberty by the state which have not been justified ...
in the name of righteousness and the public good, and few which
have not been directed ... at politically helpless minorities.
-- Harlan Fiske Stone
---------------------------------
Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.
______________________________________________________________________________
Clayart members may send postings to: clayart@lsv.ceramics.org
You may look at the archives for the list, post messages, or change your
subscription settings here: http://www.acers.org/cic/clayart/
Moderator of the list is Mel Jacobson who may be reached at melpots2@visi.com
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