Deborah Thuman on mon 4 jun 12
Mixing glazes means using stuff that shouldn't be ingested. Once this =3D
stuff is made into a glaze and fired, even though the ingredients are =3D
toxic by themselves, together in a properly formulated and fired glaze =3D
they are harmless.=3D20
Lithium is toxic. Lithium also is a life-changing med and I will =3D
continue to take it even though I know it's toxic. That's why I =3D
regularly go to the blood sucker and have my blood tested and my urine =3D
tested. Below therapeutic levels, lithium does pretty much nothing. At =3D
therapeutic levels, it makes a world of difference. Higher than =3D
therapeutic levels, it kills.=3D20
When I make a glaze, I wear a mask. I don't stir the glaze bucket with =3D
my hand. I don't eat without first washing my hands. Very simple safety =3D
precautions will keep the glaze ingredients out of your lungs and out of =
=3D
any open cuts.=3D20
Deb Thuman
http://debthumansblog.blogspot.com
http://www.etsy.com/shop.php?user_ie=3D3D5888059
http://www.facebook.com/pages/Deb-Thumans-Art-Page/167529715986
Ben Morrison on tue 5 jun 12
Edouard,
We had a similar discussion before about chemicals. This paper draws a line=
between one chemical compound and another because of their toxicity levels=
. The problem is that manufacturers and or distributors aren't reliable. Th=
e chemical in the bag is not always what is on the label. I would not trust=
that the manganese in my bag is an inorganic compound. I've personally fou=
nd that the material in my bag labeled manganese dioxide, was indeed not ma=
nganese dioxide, but rather another form of manganese that is can be absorb=
ed into your skin. I also would not trust that the bag of lithium to be 100=
% Lithium Carbonate. I would ere on the side of caution and treat it as the=
more toxic chemical, just as I do the manganese when I handle it now that =
I know.
So while it's great to have this information about what specific compounds =
are toxic and which aren't, there is no guarantee that what's in your bag i=
s what's on the label. Should distributors and chemical manufacturers be mo=
re accountable, yes certainly. However what we buy are not lab grade materi=
als, and thus they are extremely cheap by comparison. We get what we pay fo=
r, cheap chemicals are cheap for a reason.
-Ben
________________________________
From: Edouard Bastarache
To: Clayart@LSV.CERAMICS.ORG
Sent: Tuesday, June 5, 2012 11:23 AM
Subject: Re: Just how bad is toxic?
Deb & all,
read this carefully:
http://smart2000.pagesperso-orange.fr/Lithium.htm#english
Some of the opinions expressed here recently are toxic
Plejkore,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://smart2000.pagesperso-orange.fr/bloggs_edouard.htm
http://www.facebook.com/edouard.bastarache
Edouard Bastarache on tue 5 jun 12
Deb & all,
read this carefully:
http://smart2000.pagesperso-orange.fr/Lithium.htm#english
Some of the opinions expressed here recently are toxic
Plejkore,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://smart2000.pagesperso-orange.fr/bloggs_edouard.htm
http://www.facebook.com/edouard.bastarache
Steve Mills on wed 6 jun 12
On 6 Jun 2012, at 07:20, Ben Morrison wrote:
> Edouard,
>=3D20
> We had a similar discussion before about chemicals. This paper draws a li=
n=3D
e between one chemical compound and another because of their toxicity level=
s=3D
. The problem is that manufacturers and or distributors aren't reliable. Th=
e=3D
chemical in the bag is not always what is on the label. I would not trust =
t=3D
hat the manganese in my bag is an inorganic compound. I've personally found=
t=3D
hat the material in my bag labeled manganese dioxide, was indeed not mangan=
e=3D
se dioxide, but rather another form of manganese that is can be absorbed in=
t=3D
o your skin. I also would not trust that the bag of lithium to be 100% Lith=
i=3D
um Carbonate. I would ere on the side of caution and treat it as the more t=
o=3D
xic chemical, just as I do the manganese when I handle it now that I know.
>=3D20
> So while it's great to have this information about what specific compound=
s=3D
are toxic and which aren't, there is no guarantee that what's in your bag =
i=3D
s what's on the label. Should distributors and chemical manufacturers be mo=
r=3D
e accountable, yes certainly. However what we buy are not lab grade materia=
l=3D
s, and thus they are extremely cheap by comparison. We get what we pay for,=
c=3D
heap chemicals are cheap for a reason.
>=3D20
>=3D20
> -Ben
>=3D20
>=3D20
That is because for often than not they are much less than 70% pure.=3D20
80 to 100% are seriuosly expensive!
I would suggest that your Manganese is "Lab" quality.=3D20
Steve M
Steve Mills
Bath
UK
www.mudslinger.me.uk
Sent from my iPod=3D
Kristina Chadwick on thu 7 jun 12
As Paracelsus (1493-1541), the father of toxicology, said:
What is there that is not poison (toxic)? All things are poison and nothi=
=3D
ng
(is) without poison. Solely the dose determines that a thing is not a poi=
=3D
son.
In other words dose makes the poison. At low levels lithium has therapeut=
=3D
ic
benefits, at high doses it is toxic.
So when prepping glazes, wear your mask and gloves to prevent respiratory=
=3D
and dermal exposure to chemicals, especially if you are not completely
confident that what the label says is exactly what's in the bag.
Kristina Chadwick, PhD
Diplomate, American Board of Toxicology
(and potter!)
http://www.KristinaChadwick.etsy.com
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