[pure-silver] Re: Citric Acid as stop bath
- From: Gerald Koch <gerald.koch@xxxxxxx>
- To: pure-silver@xxxxxxxxxxxxx
- Date: Sat, 16 Oct 2010 08:54:28 -0700 (PDT)
Phenol was once used for cosmetic face peels, it was applied to the skin full
strength. At this concentration it can cause systemic poisoning, but dilute
solutions are relatively safe. I have used various throat sprays, gargles,
etc.
containig it without any problem. Remember menthol is a phenol and people
consume it every day in various forms such as peppermint.
"It is not only the poison it is also the dosage."
Jerry
________________________________
From: Laurence cuffe <cuffe@xxxxxxx>
To: pure-silver@xxxxxxxxxxxxx
Sent: Sat, October 16, 2010 10:42:01 AM
Subject: [pure-silver] Re: Citric Acid as stop bath
I know when I was supervising second year Organic Chemistry practicalls, phenol
was considered to be one of the nastiest chemicals we had to handle. Skin
burns
can be very difficult to treat. We often confuse familiarity with safety.
Common salt, and petrol (gas) are two common chemicals I use when looking for a
benchmark to compare safety information on a chemical with. On this comparison
phenol comes out on the nasty side.
There is some fairly comprehensive information here:
http://www.atsdr.cdc.gov/mhmi/mmg115.html
I was particularly struck by this piece:
Phenol vapor and liquid penetrate the skin with an absorption efficiency
approximately equal to the absorption efficiency by inhalation. In one case,
death occurred within 30 minutes after skin contact.
All the best and have fun!
Laurence Cuffe
On 16 Oct 2010, at 00:42, Richard Knoppow wrote:
>----- Original Message ----- From: <mark@xxxxxxxxxxxxxxxxxx>
>To: <pure-silver@xxxxxxxxxxxxx>
>Sent: Friday, October 15, 2010 3:26 PM
>Subject: [pure-silver] Re: Citric Acid as stop bath
>
>
>Richard that sounds like the voice of experience there. There would have been
>days I would have loved to have dealt with the taste of Lifeboy, but that
>wasn't
>mom. When she was really mad, she would send you out to get your own switch.
>
> Turns out its Lifebouy. I think the carbolic acid in it would have been
>worse
>even than the Stodard solvent in Fels Naptha. My mom would not allow Lifebouy
>in
>the house, partly because of its odor and partly because it would take your
>skin
>right off. It was popular in institutions because of its claimed antiseptic
>properties. I think the phenol was pretty toxic. We did have Fels Naptha, it
>was used strictly for difficult laundry.
> Fels Naptha is still made but no longer has Stodard Solvent in it but
>Lifebouy with carbolic is evidently still on the market in some parts of the
>world.
> The Lifebouy radio commercials featured a vocalized fog horn effect, the
>key
>line was "Why have BEEE OHHHH, with the BO vocalized with the fog horn. There
>was at the time a machine for producing speaking sound effects, I have
>forotten
>the name of it. It was used for Bromo-Seltzer commercials with the sound of a
>locomotive and was the effect used in the movie "Letter to Three Wives". I
>think
>it was also used for the Lifebouy commercial but its been so long since I've
>heard it I can't be sure. Not to be confused with the deoderant that
>advertised
>"Don't be half-safe" I can't remember what that was either.
>
>
>--
>Richard Knoppow
>Los Angeles
>WB6KBL
>dickburk@xxxxxxxxxxxxx
>=============================================================================================================
>
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