Hi,
Since someone may be interested in Javel Water, its mentioned on the
Internet and also by Lluis Nadeau, ''Gum Dichromate'' 1 9 8 7 .
Page 7 6. ''ARVEL''
Quote:-
'' For a period of about fifteen years preceding World War 11
the Fabrique de papier FRESSON commercialized a ''different'' Direct
Carbon paper called ARVEL. In an attempt to do away with the sawdust
development, the paper was exposed under a negative for a period considerably
longer than usual i.e. 5 to 20 times longer. After exposure,
the paper was soaked in a 3 to 4% solution of Javelle water
and the (relatively ) unhardened parts of the image were then dissolved, leaving
a positive image.''
......................................................................
I guess there must have been a great number of photographers making
successful Arvel prints over this 15 year period of time. Where are
they, now.........the prints and the photographers ?
John - Photographist - London - UK.
..................................................................................
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Javelle water or
Javel water (both: zhəvĕl`), Fr. eau
de Javelle, aqueous solution of sodium or potassium hypochlorite. It
was originally made near the French town of Javelle (now part of Paris)
and was the first chemical bleach, a use first demonstrated by C. L.
Berthollet in 1785. It was produced by passing chlorine gas through a
water solution of potash potassium carbonate, chemical compound,
K2CO3, white, crystalline, deliquescent substance
that forms a strongly alkaline water solution. It is available
commercially as a white, granular powder commonly called potash, or pearl
ash.
After the invention of bleaching powder, white or nearly white
powder that is usually a mixture of calcium chloride hypochlorite,
CaCl(OCl); calcium hypochlorite, Ca(OCl)2; and calcium
chloride, CaCl2.
Javelle water was
sometimes produced by reacting the bleaching powder with potash or soda
ash sodium carbonate, chemical compound,
Na2CO3, soluble in water and very slightly soluble
in alcohol. Pure sodium carbonate is a white, odorless powder that absorbs
moisture from the air, has an alkaline taste, and forms a strongly
alkaline water.
Now usually sodium hypochlorite solution, it is
used in bleaching, process of whitening by
chemicals or by exposure to sun and air, commonly applied to textiles,
paper pulp, wheat flour, petroleum products, oils and fats, straw, hair,
feathers, and wood.
and as a disinfectant.
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----- Original Message -----
Sent: Monday, November 26, 2007 10:00 AM
Subject: Re: Eau de Javel if you are interested.
> Hi Chris and
ALL,
>
Nice with a dash of lemon on a sunny summer
> day.
> I wonder if
anyone on this list has ever used this refreshing cocktail ? ?
> Spelt
with two ''L 's'', of course.
>
> Chin, chin. Down the
hatch !
> Seasonal greetings.
> John. Photographist - London -
UK
>
> E.J.Wall's Dictionary of Photography , eighteen ninety seven
gives :-
> ''Eau de Javelle is used for eliminating the last traces of
hypo from the
> film, and also for reducing over-dense negatives, its
action being due to
> hypochlorous acid. It is a solution
containing an alkaline hypochlorite,
> and can be made as follows
:-----''
>
> Chloride of lime
.............................
2 ozs.
> Carbonate of potash
............................. 4 ozs
> Water
......................................................40 ozs.
>
>
Agitate the chloride of lime with 30 ozs. water, dissolve the potash in the
> remainder, mix and filter.
>
............................................................................................
>
----- Original Message -----
> From: "Christina Z. Anderson" <zphoto@montana.net>
> To: "Alt,
List" <alt-photo-process-L@usask.ca>
>
Sent: Monday, November 26, 2007 3:26 AM
> Subject: Eau de Javel if you are
interested.
>
>
>> For what it is worth--eau de Javel
(one "l" is the correct spelling so the
>> article says) is said to be
4 g. sodium carbonate and 3 g. sodium
>> hypochlorite mixed each
separately with a bit of water and then combined
>> in a total water
amount of 500ml. This was used to develop "direct
>> carbon"
prints or paper such as Fresson, Arvel, Artigue, also a couple
>>
"direct carbon" papers from Germany (Hochheimer-Gummidruckpapier and
>> Buhler's direct carbon paper). These are prints made with
gelatin, not
>> gum. This is with a 6 min sun exposure in
summer, a 2-3% pot bi
>> sensitizer. Eau was put in a tray and
print face down in it.This comes
>> from a 1943 article in the BJP. I
am going back through about 200 sources
>> I have on gum and this
doesn't apply to me per se but thought someone
>> might have use for
it before I toss it.
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