Des & Jan Howard on thu 17 nov 11
Err...Ivor
Soda (Na2CO3), remember , be precise :-D
Des
On 17/11/2011 2:12 PM, ivor and olive lewis wrote:
> There is a lot of information relating to Salt (NaCl)
> and Soda (Na2CO2) as glazing agents in Clayart Archives.
--
Des & Jan Howard
Lue Pottery
Lue NSW
Australia
2850
02 6373 6419
www.luepottery.hwy.com.au
-32.656072 149.840624
Sojourner Forspam on thu 17 nov 11
A "whiff" may have been a bit hyperbolic, but pure chlorine gas is very v=
=3D
ery
very dangerous.
Every year somebody dies somewhere after trying to clean their toilet wit=
=3D
h
bleach and toilet cleaner mixed together. It doesn't happen as often as =
=3D
it
used to - after many years of public education about NOT doing this it's
started to sink in that where one is good, two is not only NOT better, it=
=3D
's
dangerous!
It probably helps (if you can call it "helping") that bathrooms are
generally small, enclosed spaces. Chlorine gas was used in WWI, and
chlorine gas was one of the compounds that killed so many in the Bhopal
chemical plant disaster.=3D20=3D20
I have permanent lung damage from trying to clean up cat urine with bleac=
=3D
h.
I only got a "whiff" - trust me, it HURT, I didn't breathe any more of t=
=3D
hat
in than that first little bit. That was in a large room, just a whiff, a=
=3D
nd
it wasn't chlorine gas, it was chloramine gas.
You do not mess with this stuff, not if you want to continue breathing.=3D2=
0=3D
I'll stand by the idea of NOT putting oneself in the position of breathin=
=3D
g
anything that could be labeled "chlorine fumes".
Snail Scott on thu 17 nov 11
On Nov 17, 2011, at 8:18 AM, Sojourner Forspam wrote:
> ...pure chlorine gas is very very very dangerous...
No arguing that. It isn't an emission of salt kilns, however,
so it's an irrelevant concern for this discussion. Not all
chlorine compounds are chlorine gas, and it would be a
misleading simplification to treat the topic in that manner.
Let's focus on the actual chemistry of the salt-firing process
and avoid getting side-tracked.
-Snail
Edouard Bastarache on thu 17 nov 11
Hello all,
a single whiff may be sufficient to cause a form of
"without delay" asthma that was first described by
Dr. Brooks in England in 1983. I encountered one
case in my "Lung Physiology Laboratory" in 1975.
I presented the case to our "Workmans Compensation
Board" and naturally the case was not recongnized
since the disease was not known.
A broncography was performed on the patient by
them (lung specialists of the board) and since there
were no anatomical deformation, he was not
compensated even if I had observed a physilogical
impairment in my lab.
Those were the days.
My reasoning to present the case to the board was
that maybe an exposure insufficient to cause anatomical
changes was sufficient to cause ventilatory impairment
typical of airways obstruction...
I lost.Too bad he was my parents' neighbour.
"A "whiff" may have been a bit hyperbolic, but pure chlorine gas is very
very
very dangerous."
Gis,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://edouardbastaracheblogs2.blogspot.com/
http://www.facebook.com/edouard.bastarache
Edouard Bastarache on thu 17 nov 11
Vince,
what I meant was that "without delay" asthma is possible after a single
whiff of a hazardous material such as concentrated sulfuric acid or sodium
hydroxide. The stuff must be highly irritating /corrosive due to its nature
and the concentrations in the air. The patient I spoke about this afternoon
was a welder repairing a railroad tanker car used to ship concentrated
sulfuric acid.
You are a former welder, so you certainly understand this case.
This relatively new disease is called R.A.D.S.which stands for
Reactive Airways Dysfonction Synrome and was first described by Dr. Brooks
in 1983.
I dont know the mechanism of action but it is a permanent state.
Therefore you need a hazardous exposure sufficient enough to cause the
disease. Salt-pottery making does not represent this type of exposure.
The reason I commented was because someone was sort of laughing at "single
whiff" diseases..
Gis,
Edouard Bastarache
Spertesperantisto
Sorel-Tracy
Quebec
http://www.flickr.com/photos/30058682@N00/
http://edouardbastarache.blogspot.com/
http://edouardbastaracheblogs2.blogspot.com/
http://www.facebook.com/edouard.bastarache
ivor and olive lewis on thu 17 nov 11
Dear Sojourner Forspam,
Your url of Florida State University was not available to me and could not
be displayed but the precautions you give should not be ignored. I recommen=
d
using a respirator whose cartridges adsorb acid fumes.
There is a lot of information relating to Salt (NaCl) and Soda (Na2CO2) a=
s
a glazing agents in Clayart Archives. Genuine scientific information about
these processes is difficult to find but it is known that among the
effluents there is a major proportion of Potassium Chloride. Other Chloride=
s
that have been identified in salt (NaCl) kiln effluent are known to react
with water to give acidic solutions. These, if inhaled can cause problems
with our lungs. I was diagnosed with Asthma after such an experience.
Were a "whiff" of Chlorine fatal I would not have survived High School. In
Senior Chemistry we regularly detected Chlorine from Chlorides by reacting
samples with concentrated hot Sulphuric acid and sniffing the mouth of the
test tube !!.
Regards,
Ivor Lewis,
REDHILL,
South Australia
| |
|
