FX10

[Lachlan Young]

Lachlan Young submitted a new resource:

(there was a url link here which no longer exists) - FX10

Water-------------------------750ml
Sodium Sulphite----------------100.0 grams
Kodak CD-2--------------------7.5 grams
Hydroquinone-------------------6.0 grams
Borax--------------------------4.0 grams
Boric acid, crystalline-----------4.0 grams
Water to-----------------------1 litre

CD-2 is a ppd derivative used in colur developers.

Crawley reccomends 5-11 minutes at 68F/20C

Darkroom cookbook suggests diluting 1+3

He also says that if Fine grain effect is too great with...

(there was a url link here which no longer exists)

 

[Sean]

Comments from previous article system:

By Gerald Koch - 08:47 PM, 05-10-2006 Edit Rating: None
CD-2 is one of the older color developing agents and has been superceded by CD-3 and CD-4. I looked some time ago for a source of CD-2 and was unable to find anyone who supplied it.
By Ian Grant - 10:03 PM, 05-10-2006 Edit Rating: None
I can supply CD-2 in the UK. Have all the remaining stocks from Hogg Lab Supplies, it's old stock but keeps well. Also CD-1, CD-3, CD-4 and one or two thers.

There are B&W formulae for chromogenic processing of B&W papers, essentilaly a very simple colour developer to wich you add the relevant dye-coupler. Tetenal used to sell a kit at one time.
By billtroop - 10:07 PM, 06-30-2006 Edit Rating: None
The formula did not originally contain CD-2. When I asked Geoffrey Crawley about publishing this formula in the Film Developing Cookbook, he suggested CD-2 as a replacement for the original chemical, which was no longer available. You could obviously use one of the other ppd-derivs as well. The formula will have to be adjusted to modern films in any case, as my comments about adjusting boric acid, borax, and sulfite indicate. These comments are mine, I think I made clear in the text - they do not come from Crawley, who has not pursued this kind of development for some decades.
By commiecam - 10:09 PM, 09-04-2006 Edit Rating: None
I believe that A49 is supposed to be analogous to the old Agfa Atomal. If that is so,
then CD2 is a replacement for the original Agfa developing agent, Hydroxyethyl Orthoaminophenol. Atomal was a VERY fine developer, producing a net speed gain similar to that which occurs in MQ developers when you replace the Matol with Phenidone. In other words, all the way back into the late 1930s, Atomal was delivering 1/3 to 1/2 stop more than D76, while prroducing measurably finer grain.

The chemical was available ten or so years ago, I think from Alfa Chemical.

Ed Lukacs

 

[Pixophrenic]

Recently I had a look Crawley's writings with regard to p-phenylene diamine (PPD) which led me to FX10, and to Young's post on using CD-2 as a substitute for "genochrome" (reportedly diethyl p-phenylene diamine bisulfite, no longer available) originally suggested in this formula by Crawley. Mixing up this formula with CD-2 as a substitute leads to some strange effects, such as appearance of CD-2 free base in the form of oily droplets on the surface, which miraculously disappear after a couple of days. I am quite certain this behavior results from excess of sulfite which performs no useful function in this developer. Is there anyone interested in revisiting this formula and providing personal experiences?

 

[mohmad khatab]

Recently I had a look Crawley's writings with regard to p-phenylene diamine (PPD) which led me to FX10, and to Young's post on using CD-2 as a substitute for "genochrome" (reportedly diethyl p-phenylene diamine bisulfite, no longer available) originally suggested in this formula by Crawley. Mixing up this formula with CD-2 as a substitute leads to some strange effects, such as appearance of CD-2 free base in the form of oily droplets on the surface, which miraculously disappear after a couple of days. I am quite certain this behavior results from excess of sulfite which performs no useful function in this developer. Is there anyone interested in revisiting this formula and providing personal experiences?

I will tell you in a few weeks

 

[mohmad khatab]

Recently I had a look Crawley's writings with regard to p-phenylene diamine (PPD) which led me to FX10, and to Young's post on using CD-2 as a substitute for "genochrome" (reportedly diethyl p-phenylene diamine bisulfite, no longer available) originally suggested in this formula by Crawley. Mixing up this formula with CD-2 as a substitute leads to some strange effects, such as appearance of CD-2 free base in the form of oily droplets on the surface, which miraculously disappear after a couple of days. I am quite certain this behavior results from excess of sulfite which performs no useful function in this developer. Is there anyone interested in revisiting this formula and providing personal experiences?

I have already prepared that recipe.
After several failures due to sinister oily spots. I reached the perfect preparation method.
Firstly, a small glass cup, add (CD2) to 50 ml of cold water completely 20 ° C, stirring the solution well, it will dissolve without any oily slicks at all.
Secondly :
Deionized Water - (52 ° C) --- 750ml
Sodium Sulfite ---------------- 100.0 grams
Hydroquinone ------------------- 6.0 grams
Borax -------------------------- 4.0 grams
Boric acid, crystalline ----------- 4.0 grams
Anti Fog ................. 0.20 g - This is an addition from my head
Stir constantly until everything melts completely.
Allow this solution to cool completely. When it cools down, white sodium sulfite or hydroquinone clumps may appear, don't worry.
Third: Add the cold (CD2) solution to the cold solution and stir well without any heating.
Increase the water until the solution reaches 1 liter.
- Whether there are still some deposits or clusters that have not dissolved well, do not worry, fill this developer in a sealed glass bottle for a week period.
- After the week you will get a very homogeneous and transparent developer without any deposits or clumps, almost this will succeed by 99% - if you notice that some deposits and erosions are still present, you will add one or two grams of sodium hydroxide inside the glass package and close it without stirring for a period 6 hours the ingredients will melt and blend together in a very fine blend,
The important question:
Was this formula worth it ...
The answer is brief. Yes, she really deserves all this patience.
Unfortunately, I sold that package after preparing it to a colleague, and he promised me to send me the test results for this developer.
But I will publish the results within a week as soon as I get the pictures, but this fellow contacted me and thanked me for this wonderful formula ,, and he promised me that he will do a scan but not quickly due to the conditions of sanitary insulation as you know.
Greetings .