[ARC5] MEK, benzene, acetone for Q dope.

[J. Forster]

They were called "Pyrene". The CCl4 vapur does not burn and is 4 to 5
times as heavy as air, and smothers the fire.

They were actually quite dangerous. If sprayed on very hot metal (possibly
only iron or steel) they made Phosgene, a nasty war gas.

-John

==============


> I remember carbon tet fire extinguishers.  Got a blob on your dress honey?
> Here. Have at it dear. It disappeared as an easily available ‘off the
> shelf consumer product’ about the time I entered 1st grade as I recall.
> Thems was the days my friends. BTW the carbon tet extinguishers in the
> (auto repair) shop were replaced with big ol’ CO2 jobbies. I always
> loved pulling the trigger on those.
>
>
>
>
>
>
> From: AKLDGUY .
> Sent: ‎Monday‎, ‎March‎ ‎10‎, ‎2014 ‎3‎:‎47‎ ‎PM
> To: arc5 mail list
>
>
>
>
>
> When I was a technician in the telecommunications industry in the late
> 1960's we used carbon tetrachloride to clean switch and relay contacts.
> This was a liquid that came in small bottles. We poured it on rags and
> brushes with bare fingers and no breathing protection.
>
> Within a few years carbon tet was declared highly toxic and promptly
> dropped from use. I never heard of any study into long term effects or
> follow up on those who had used it.
>
> 73 de Neil ZL1ANM
>
>
> On Tue, Mar 11, 2014 at 8:35 AM, J. Forster <jfor at quikus.com> wrote:
>
>> If you can regulate CO2 on a pretext, you can equally regulate other
>> metabolic wastes on a similar pretext.
>>
>> -John
>>
>> =========
>>
>>
>>
>> > Pee and Poo don't frighten me.  Nevertheless I avoid exposure if I can
>> > I agree occasional MEK exposure likely has very small risk---- but if
>> I
>> > can remove pint with something else, I'll use that something else.  If
>> > more benign paint removers don't entirely do the job, I get my MEK-
>> and
>> > nitrial gloves and work outside- up wind-----
>> >
>> > Also EPA has nothing to do with MSDS
>> >
>> > I'm not particularly upset with President Nixon and Watergate----- but
>> > HE's the $#%* that created the EPA  I can't forgive him for that
>> >
>> >
>> >
>> >
>> >
>> > On Monday, March 10, 2014 2:59 PM, Ronnie Hull <w5sum at comcast.net>
>> wrote:
>> >
>> > Talk about beating a dead horse..good golly..,
>> >
>> > Sent from Ronnie's IPhone
>> >
>> >
>> >> On Mar 10, 2014, at 11:43 AM, Bruce Long <coolbrucelong at yahoo.com>
>> >> wrote:
>> >>
>> >> In my opinion MSDS warnings are for chemical use that occurs in an
>> >> industrial setting not "industrial exposure".   It is true there are
>> >> some odd results, such as rubbing alcohol in a home bathroom being
>> >> "unregulated" and an another bottle of the same stuff at work without
>> a
>> >> MSDS sticker makes the employer selectable to a serious fine.
>> >>
>> >> However it is a mistake to think MSDS warnings can be safely ignored
>> or
>> >> discounted for occasional home use.
>> >>
>> >> MEK scares me and I avoid its use at home if I can and use full
>> >> precautions when I can't avoid use.
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >>
>> >> On Monday, March 10, 2014 11:56 AM, J. Forster <jfor at quikus.com>
>> wrote:
>> >>
>> >> MSDSs are for Industrial Exposure...  40 hours per week for many
>> years.
>> >> Not for occasional, casual use.
>> >>
>> >> You can die from drinking water or eating carrots too.
>> >>
>> >> -John
>> >>
>> >> =====================
>> >>
>> >>
>> >>
>> >>> All,
>> >>> Here is the Material Safety Data Sheet for the MEK. They always
>> sound
>> >>> scary,
>> >>> but with the toxicity at greater than 2 gram per kilo you would have
>> to
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