Anhydous instead of monohydrate in Ansco 130

[RPippin]

Last night I mixed up a gallon of Ansco 130, and used Sodium Carbonate Anhydrous instead of Monohydrate. I used the same weight that is on the Formulary formula for Monohydrate, and then reread the damn thing after I was done and realized my mistake. I'm no chemist. What have I done, and is it useful the way it is. How can I make it right without remixing the whole thing. Help

 

[RPippin]

If I don't hear from anyone, I'll try and develop some prints and see what happens, but would like some advise.

 

[Gerald C Koch]

It will probably not make much difference. You should have used 0.855 times as much of the anhydrous form.

 

[Photo Engineer]

If you knew the correct pH of the developer, then you could adjust the pH of the "wrong" developer by addition of acid or base. I suspect that the pH is too high and it would take addition of acid to fix this. I suggest 37% battery acid (sulfuric) added dropwise while wearing gloves and goggles as it will fizz up. The concentrated acid will not over dilute the developer.

This is a last ditch effort though for a failed mix.

With what you have and making no correction, you will probably get a 20% or so contrast increase along with faster development.

Good luck.

PE

 

[removed account4]

wow,
a lot of work for an extra .145g sodium carbonate ...
i am no expert in these things, but it seems worth it just to make
a few prints and see if it makes much of a difference ...

good luck !

john

 

[Photo Engineer]

I agree John. I was answering the OPs question directly.

PE

 

[Vlad Soare]

I think it's going to work just fine.

 

[removed account4]

I agree John. I was answering the OPs question directly.

PE

 

[RPippin]

Thanks guys. I'll just give it a try with a short bath in developer and transfer to a water bath for a while if it is getting too contrast.