In calendar 1998 we conducted rather extensive evaluations of
various types of plastic containers.....primarily based upon an interest in
CS storage mediums. Our research indicated PETE materials exhibited very
stable storage parameters. No appreciable outgassing occurred over a 6
month period. At highly elevated temperatures (180 F.) some molecular
migration was detectable; but not of sufficient magnitude to be of
consequence.
We found that conventional, commercially available, H202 bottles (any size)
available at Walmart, Eckerd's, etc.....to be splendid containers------and
excepting "near-boiling and above environments", to be....essentially.....as
reliable as glassware.
As we use enormous amounts of H202 (in pint and quart bottles), we have
ample numbers of CS containers for all our needs.
Although there are a number of more structurally-rigid
thermo-setting plastics of special chemistry available, it seems
economically counter-productive to invoke a steel mallet where a fly swatter
is quite adequate.
Interestingly, it appears the list is challenged to revisit this
topic--- with an almost calendar-like precision......every year or so. :
>)
Sincerely, Brooks Bradley
----- Original Message -----
From: "Frank Key" <[email protected]>
To: <[email protected]>
Sent: Monday, August 27, 2001 8:20 AM
Subject: Re: CS>Plastic Bottles?
> [email protected] wrote:
>
> > a quick google search found:
> > http://www.uni.edu/pubrel/newsroom/op-ed/chemdep.shtml
> > ". Related compounds, pthalates, used in making ubiquitous flexible
> > polyvinyl products, caused dramatic decline in testosterone and
> > missing or blood-filled testes in rats, according to a recent EPA
> > study. The Center for Disease Control recently found pthalate
> > residues occurring at an alarming rate in the urine of randomly
> > tested children and adults".
> > There has been a bit of news coverage regarding the use of pthalates
> > in infants toys and endocrine disruption.
> > see also:
> > http://ehpnet1.niehs.nih.gov/docs/2000/108p1189-
> > 1193ohtani/abstract.html
> >
> > > > phthalic acids are xenoestrogens not good for your endocrine
system...
> > > > they leach! HDPE would be more appropriate for storing ingestables.
>
>
> This quoted reference says that "pthalates, used in making ubiquitous
flexible
> polyvinyl products..." caused problems.
>
> The reference article does not say that pthalates leached from containers
PETE.
>
> From the published literature on PETE, there is every indication that the
substance is very stable and does not contaminate liquids stored in PETE
containers over extended periods of time.
>
> frank key
>
>
>
>
>
> frank key
>
>
>
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