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is chlorine a problem in using mineral sodalite in glaze?

updated tue 9 jan 07

 

Dave Finkelnburg on sat 6 jan 07


Eva,
I have never used this material, so consider that
in this reply.
It would seem to me the chlorine would have the
same effect as if you were using table salt (NaCl).
The chlorine will be turned into gas in the firing.
It's corrosive, and outside the kiln the chlorine will
react, so you want to vent your kiln well and avoid
the fumes, just as you would with any firing in any
kiln.
The chlorine should have no effect on the glaze
itself.
Of course, you will test the material to see how
it performs for you, before actually glazing some
ware, just as with any new material.
I really like your plan to make people something
from a material that will be meaningful to them. What
fun for you and them!
Good potting,
Dave Finkelnburg

--- Eva Gallagher wrote:
> I will be getting some sodalite (Na8 Al6 Si6 O24
> Chlorine6) and would like to use it as a flux in a
> glaze. I am just worried about the chlorine in the
> mineral.
> Our son is an exploration geologist and one of their
> "hot"properties has this stuff on it. I would like
> to make some mugs glazed in it for the crew so it
> would just be a one time thing.

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Eva Gallagher on sat 6 jan 07


Hello, perhaps someone here would have some information about the above.
I will be getting some sodalite (Na8 Al6 Si6 O24 Chlorine6) and would =
like to use it as a flux in a glaze. The % composition is almost similar =
to nepheline syenite except for the chlorine. It will have been =
pulverized and I will be ball milling it further. I am just worried =
about the chlorine in the mineral. Using approximately 30% sodalite in a =
glaze will that create a problem?
Our son is an exploration geologist and one of their "hot"properties has =
this stuff on it. I would like to make some mugs glazed in it for the =
crew so it would just be a one time thing.
Regards,
Eva Gallagher
Deep River Potters Guild

Kathy Forer on sat 6 jan 07


On Jan 6, 2007, at 11:49 AM, Dave Finkelnburg wrote:

> The chlorine will be turned into gas in the firing.

I was once temporarily blinded when the chlorine in a swimming pool
somehow mixed with a residue of polyester resin dust in my eyes from
having done a lot of tool and die grinding.

Find out more, but I'd be very careful around any chlorine gas.
Wikipedia article tells how it was used as a chemical weapon in WWI:
"Chlorine gas, also known as bertholite, was first used as a weapon
against humans in World War I." http://en.wikipedia.org/wiki/Chlorine

Edouard Bastarache Inc. on sat 6 jan 07


Hello David,

by analogy with the role of fluorine as a strong
melter in glazes,
such as in Lepidolite, would another halogen such
as chlorine be
able to play an anologous role?

It appears that the melting role of fluorine in
fluorine-containing
compounds such as Lepidolite comes from the
formation of
compounds with some of the metallic oxides of the
glaze
such as Na, K, etc.

Later,



Edouard Bastarache
Le Franšais Volant
The Flying Frenchman

Sorel-Tracy
Quebec
www.sorel-tracy.qc.ca/~edouardb/Welcome.html
http://perso.wanadoo.fr/smart2000/index.htm
http://www.pshcanada.com/Toxicology.htm
www.thepottersshop.blogspot.com
http://www.ceramique.com/cerambooks/rayons/technologie.php
http://www.flickr.com/photos/30058682@N00/



----- Original Message -----
From: "Dave Finkelnburg"
To:
Sent: Saturday, January 06, 2007 11:49 AM
Subject: Re: Is chlorine a problem in using
mineral sodalite in glaze?


> Eva,
> I have never used this material, so consider
> that
> in this reply.
> It would seem to me the chlorine would have
> the
> same effect as if you were using table salt
> (NaCl).
> The chlorine will be turned into gas in the
> firing.
> It's corrosive, and outside the kiln the
> chlorine will
> react, so you want to vent your kiln well and
> avoid
> the fumes, just as you would with any firing in
> any
> kiln.
> The chlorine should have no effect on the
> glaze
> itself.
> Of course, you will test the material to see
> how
> it performs for you, before actually glazing
> some
> ware, just as with any new material.
> I really like your plan to make people
> something
> from a material that will be meaningful to them.
> What
> fun for you and them!
> Good potting,
> Dave Finkelnburg
>
> --- Eva Gallagher wrote:
>> I will be getting some sodalite (Na8 Al6 Si6
>> O24
>> Chlorine6) and would like to use it as a flux
>> in a
>> glaze. I am just worried about the chlorine in
>> the
>> mineral.
>> Our son is an exploration geologist and one of
>> their
>> "hot"properties has this stuff on it. I would
>> like
>> to make some mugs glazed in it for the crew so
>> it
>> would just be a one time thing.
>
> __________________________________________________
> Do You Yahoo!?
> Tired of spam? Yahoo! Mail has the best spam
> protection around
> http://mail.yahoo.com
>
> ______________________________________________________________________________
> 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.
>

Edouard Bastarache Inc. on sun 7 jan 07


Hello Eva,

yes fluorine is volatile and represents 6% of the
weight of Lepidolite,
too much Lepidolite in a glaze may cause blisters
and craters.


Later,



Edouard Bastarache
Le Franšais Volant
The Flying Frenchman

Sorel-Tracy
Quebec
www.sorel-tracy.qc.ca/~edouardb/Welcome.html
http://perso.wanadoo.fr/smart2000/index.htm
http://www.pshcanada.com/Toxicology.htm
www.thepottersshop.blogspot.com
http://www.ceramique.com/cerambooks/rayons/technologie.php
http://www.flickr.com/photos/30058682@N00/


----- Original Message -----
From: "Eva Gallagher"
To:
Sent: Monday, January 08, 2007 9:43 AM
Subject: Re: Is chlorine a problem in using
mineral sodalite in glaze?


Hello Edouard,
Is fluorine volatile? or at least as much as
chlorine? - I expect that the
chlorine will start to volatize well before the
glazes are fully melted and
so would not be taken up into a compound as much.
I will be firing to cone
10 in gas.
Eva
Deep River Potters Guild

----- Original Message -----
From: "Edouard Bastarache Inc."

To:
Sent: Saturday, January 06, 2007 1:07 PM
Subject: Re: Is chlorine a problem in using
mineral sodalite in glaze?


> Hello David,
>
> by analogy with the role of fluorine as a strong
> melter in glazes,
> such as in Lepidolite, would another halogen
> such
> as chlorine be
> able to play an anologous role?
>
> It appears that the melting role of fluorine in
> fluorine-containing
> compounds such as Lepidolite comes from the
> formation of
> compounds with some of the metallic oxides of
> the
> glaze
> such as Na, K, etc.
>
> Later,
>
>
>
> Edouard Bastarache
> Le Franšais Volant
> The Flying Frenchman
>
> Sorel-Tracy
> Quebec
> www.sorel-tracy.qc.ca/~edouardb/Welcome.html
> http://perso.wanadoo.fr/smart2000/index.htm
> http://www.pshcanada.com/Toxicology.htm
> www.thepottersshop.blogspot.com
> http://www.ceramique.com/cerambooks/rayons/technologie.php
> http://www.flickr.com/photos/30058682@N00/
>
>
>
> ----- Original Message -----
> From: "Dave Finkelnburg"
>
> To:
> Sent: Saturday, January 06, 2007 11:49 AM
> Subject: Re: Is chlorine a problem in using
> mineral sodalite in glaze?
>
>
>> Eva,
>> I have never used this material, so consider
>> that
>> in this reply.
>> It would seem to me the chlorine would have
>> the
>> same effect as if you were using table salt
>> (NaCl).
>> The chlorine will be turned into gas in the
>> firing.
>> It's corrosive, and outside the kiln the
>> chlorine will
>> react, so you want to vent your kiln well and
>> avoid
>> the fumes, just as you would with any firing in
>> any
>> kiln.
>> The chlorine should have no effect on the
>> glaze
>> itself.
>> Of course, you will test the material to see
>> how
>> it performs for you, before actually glazing
>> some
>> ware, just as with any new material.
>> I really like your plan to make people
>> something
>> from a material that will be meaningful to
>> them.
>> What
>> fun for you and them!
>> Good potting,
>> Dave Finkelnburg
>>
>> --- Eva Gallagher wrote:
>>> I will be getting some sodalite (Na8 Al6 Si6
>>> O24
>>> Chlorine6) and would like to use it as a flux
>>> in a
>>> glaze. I am just worried about the chlorine in
>>> the
>>> mineral.
>>> Our son is an exploration geologist and one of
>>> their
>>> "hot"properties has this stuff on it. I would
>>> like
>>> to make some mugs glazed in it for the crew so
>>> it
>>> would just be a one time thing.
>>
>> __________________________________________________
>> Do You Yahoo!?
>> Tired of spam? Yahoo! Mail has the best spam
>> protection around
>> http://mail.yahoo.com
>>
>> ______________________________________________________________________________
>> 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.
>>
>
> ______________________________________________________________________________
> 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.
>

______________________________________________________________________________
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.

Eva Gallagher on mon 8 jan 07


Hello Edouard,
Is fluorine volatile? or at least as much as chlorine? - I expect that th=
e=20
chlorine will start to volatize well before the glazes are fully melted =
and=20
so would not be taken up into a compound as much. I will be firing to con=
e=20
10 in gas.
Eva
Deep River Potters Guild

----- Original Message -----=20
From: "Edouard Bastarache Inc."
To:
Sent: Saturday, January 06, 2007 1:07 PM
Subject: Re: Is chlorine a problem in using mineral sodalite in glaze?


> Hello David,
>
> by analogy with the role of fluorine as a strong
> melter in glazes,
> such as in Lepidolite, would another halogen such
> as chlorine be
> able to play an anologous role?
>
> It appears that the melting role of fluorine in
> fluorine-containing
> compounds such as Lepidolite comes from the
> formation of
> compounds with some of the metallic oxides of the
> glaze
> such as Na, K, etc.
>
> Later,
>
>
>
> Edouard Bastarache
> Le Fran=E7ais Volant
> The Flying Frenchman
>
> Sorel-Tracy
> Quebec
> www.sorel-tracy.qc.ca/~edouardb/Welcome.html
> http://perso.wanadoo.fr/smart2000/index.htm
> http://www.pshcanada.com/Toxicology.htm
> www.thepottersshop.blogspot.com
> http://www.ceramique.com/cerambooks/rayons/technologie.php
> http://www.flickr.com/photos/30058682@N00/
>
>
>
> ----- Original Message -----
> From: "Dave Finkelnburg"
> To:
> Sent: Saturday, January 06, 2007 11:49 AM
> Subject: Re: Is chlorine a problem in using
> mineral sodalite in glaze?
>
>
>> Eva,
>> I have never used this material, so consider
>> that
>> in this reply.
>> It would seem to me the chlorine would have
>> the
>> same effect as if you were using table salt
>> (NaCl).
>> The chlorine will be turned into gas in the
>> firing.
>> It's corrosive, and outside the kiln the
>> chlorine will
>> react, so you want to vent your kiln well and
>> avoid
>> the fumes, just as you would with any firing in
>> any
>> kiln.
>> The chlorine should have no effect on the
>> glaze
>> itself.
>> Of course, you will test the material to see
>> how
>> it performs for you, before actually glazing
>> some
>> ware, just as with any new material.
>> I really like your plan to make people
>> something
>> from a material that will be meaningful to them.
>> What
>> fun for you and them!
>> Good potting,
>> Dave Finkelnburg
>>
>> --- Eva Gallagher wrote:
>>> I will be getting some sodalite (Na8 Al6 Si6
>>> O24
>>> Chlorine6) and would like to use it as a flux
>>> in a
>>> glaze. I am just worried about the chlorine in
>>> the
>>> mineral.
>>> Our son is an exploration geologist and one of
>>> their
>>> "hot"properties has this stuff on it. I would
>>> like
>>> to make some mugs glazed in it for the crew so
>>> it
>>> would just be a one time thing.
>>
>> __________________________________________________
>> Do You Yahoo!?
>> Tired of spam? Yahoo! Mail has the best spam
>> protection around
>> http://mail.yahoo.com
>>
>> ______________________________________________________________________=
________
>> 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.
>>
>
> _______________________________________________________________________=
_______
> 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=20
> melpots@pclink.com.
>=20