Tom Buck on tue 19 feb 02
RKorn:
One can manufacture chlorine(IV) oxide (aka dioxide) quite readily
but the stuff is not stable and therefore dangerous. So, it is always
generated in-situ just before use (eg, bleaching wood pulp, sterilizing
swimming pool water). At room conditions, if released as such, it is a
red-yellow gas. At lower temperature, ClO2 gas changes to liquid at 10 deg
Celsius and freezes to a solid at minus 59.5 C. It is highly toxic, very
reactive especially with organics (hence its use to destroy anthrax
spores). Even so, the combination of ClO2 and an organic may lead to an
explosion if the ClO2 concentration is too high.
Clearly, potters should avoid ClO2. Almost all molds and bacteria
can be controlled by use of household bleach (solution of sodium
hypochlorite, NaOCl).
til later. Peace. Tom B.
Tom Buck ) tel: 905-389-2339
(westend Lake Ontario, province of Ontario, Canada).
mailing address: 373 East 43rd Street,
Hamilton ON L8T 3E1 Canada
Edouard Bastarache on tue 19 feb 02
Right Tom,
Chlorine dioxide is moderately toxic by inhalation.
Experimental reproductive effects.
Mutation data reported.
An eye irritant.
A powerful explosive sensitive to spark, impact, sunlight,
or heating rapidly to 100 C.
A powerful oxidizer.
Concentrations of greater than 10% in air are explosive.
Explodes on mixing with carbon monoxide, hydrocarbons
(e.g. butadiene, ethane, ethylene, methane, propane),
fluoramines( e.g. difluoramine,triflouramine).
It also explodes in contact with many other stuffs.
Reacts with water or steam to produce toxic and
corrosive fumes of HCL.
When heated to decomposition it emits toxic fumes of
CL-
Later,
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
----- Original Message -----
From: Tom Buck
To:
Sent: Tuesday, February 19, 2002 12:21 AM
Subject: Re: Chlorine dioxide
> RKorn:
> One can manufacture chlorine(IV) oxide (aka dioxide) quite readily
> but the stuff is not stable and therefore dangerous. So, it is always
> generated in-situ just before use (eg, bleaching wood pulp, sterilizing
> swimming pool water). At room conditions, if released as such, it is a
> red-yellow gas. At lower temperature, ClO2 gas changes to liquid at 10 deg
> Celsius and freezes to a solid at minus 59.5 C. It is highly toxic, very
> reactive especially with organics (hence its use to destroy anthrax
> spores). Even so, the combination of ClO2 and an organic may lead to an
> explosion if the ClO2 concentration is too high.
> Clearly, potters should avoid ClO2. Almost all molds and bacteria
> can be controlled by use of household bleach (solution of sodium
> hypochlorite, NaOCl).
> til later. Peace. Tom B.
>
> Tom Buck ) tel: 905-389-2339
> (westend Lake Ontario, province of Ontario, Canada).
> mailing address: 373 East 43rd Street,
> Hamilton ON L8T 3E1 Canada
>
>
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