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From: isw on 13 Apr 2010 00:40
In article <Xns9D5865B32B811WQAHBGMXSZHVspammote(a)130.39.198.139>,
bz <bz+ser(a)ch100-5.chem.lsu.edu> wrote:

> isw <isw(a)witzend.com> wrote in
> news:isw-5DD6AD.00274012042010@[216.168.3.50]:
>
> > In article <43g4s51k1pd9f746cltl4cucl3d5p2ekb7(a)4ax.com>,
> > Rich Webb <bbew.ar(a)mapson.nozirev.ten> wrote:
> >
> >> On Sun, 11 Apr 2010 10:45:28 -0700 (PDT), Robert Macy
> >> <macy(a)california.com> wrote:
> >>
> >> >On Apr 11, 4:13�am, "William Sommerwerck" <grizzledgee...(a)comcast.net>
> >> >wrote:
> >> >> > What is the best way to reseal this junction, but preserve
> >> >> > the requirement that the liquid in contact will be consumed
> >> >> > by humans?
> >> >>
> >> >> Silicone adhesives, as far as I know, are not particularly toxic in
> >> >> the first place, and I doubt a properly cured bond would leach.
> >> >>
> >> >> > Can food be placed in contact if I use superglue? Doubt it, but
> >> >> > need confirmation.
> ....
> >
> > Go to a pet store and get a tube of aquarium seal. It's a silicone
> > adhesive (which of itself is totally nontoxic), plus whatever is used
> > for a catalyst won't harm fish, even after very long exposure in
> > non-changing water. If it won't hurt them, it sure won't hurt you.
> >
> > Clean all the surfaces with something like a "green scrubber", and apply
> > the silicone as a decent-thickness fillet. You can smooth the stuff with
> > a finger wetted with mineral spirits (which will evaporate by the time
> > the silicone is cured).
> >
> > Isaac
>
> In an aquarium, the sealant is not in contact with hot (near boiling)
> water.
> I would not rely on 'safe at room temperature' as an indication of 'safe at
> elevated temperatures' and would distrust any company that did so without
> extensive testing.

You can rely on the known characteristics of silicone rubber.

Isaac
From: PeterD on 13 Apr 2010 08:07
On Mon, 12 Apr 2010 08:13:55 -0700, "William Sommerwerck"
<grizzledgeezer(a)comcast.net> wrote:

>> I would not rely on "safe at room temperature" as an
>> indication of "safe at elevated temperatures" and would
>> distrust any company that did so without extensive testing.
>
>Then call GE ("We bring goo things to life") and ask.
>
>(Forgive me for trying to be clever, but if you don't get /that/ one...)
>

I have some goo that I brougt to life once. Devoured an entire town of
200 people before I could get it stopped... <bseg>

I think the OP needs to realize that there is no solution to his
problem--he needs either to replace it or give up, there is likely no
suitable repair method that will make even a semi-pernament repair,
likely anything he does will fail in a few uses.

And as you say, something safe at room temperature sure as shooting is
likely to fail on all counts, including toxic byproducts, when heated!
From: PeterD on 13 Apr 2010 08:07
On Mon, 12 Apr 2010 23:52:15 +0000 (UTC), bz
<bz+ser(a)ch100-5.chem.lsu.edu> wrote:

>Robert Macy <macy(a)california.com> wrote in news:cd57f5e4-cc4c-43c5-bdab-
>e6fb76ade71a(a)j21g2000yqh.googlegroups.com:
>
>> On Apr 12, 8:13�am, "William Sommerwerck" <grizzledgee...(a)comcast.net>
>> wrote:
>>> > I would not rely on "safe at room temperature" as an
>>> > indication of "safe at elevated temperatures" and would
>>> > distrust any company that did so without extensive testing.
>>>
>>> Then call GE ("We bring goo things to life") and ask.
>>>
>>> (Forgive me for trying to be clever, but if you don't get /that/ one...)
>>
>> what did we do to deserve this PUNishment?
>
>sounds like a new flavor (the pun-ish mint)

<groan>
From: William Sommerwerck on 13 Apr 2010 08:26
> And as you say, something safe at room temperature
> sure as shooting is likely to fail on all counts, including
> toxic byproducts, when heated!

I'm not sure about that. Silicones are highly stable, and the boiling point
of water is hardly a high temperature. Many carbon-based organic compounds
are stable at those temperatures. (Boiling pasta, for example, doesn't cause
it to disintegrate.)


From: bz on 13 Apr 2010 11:54
"William Sommerwerck" <grizzledgeezer(a)comcast.net> wrote in
news:hq1nto$drs$1(a)news.eternal-september.org:

>> And as you say, something safe at room temperature
>> sure as shooting is likely to fail on all counts, including
>> toxic byproducts, when heated!
>
> I'm not sure about that. Silicones are highly stable, and the boiling
> point of water is hardly a high temperature. Many carbon-based organic
> compounds are stable at those temperatures. (Boiling pasta, for example,
> doesn't cause it to disintegrate.)

but boiling pasta DOES 'denature' the chemicals making up the uncooked
pasta.

Cooked food is definitely different chemically from uncooked food.










--
bz

please pardon my infinite ignorance, the set-of-things-I-do-not-know is an
infinite set.
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