Sodium Carbonate and Ansco 130

[mikebarger]

On the box it says sodium tetraborate decahydrate.

Thanks guys from a non chemistry guy.

I had ordered some ansco 130 from the Formulary and when it arrived yesterday it was drippping powder. I called them and told them some of the Hydroquinone was gone and almost all of the Potassium bromide was gone.

They're sending out two new packets, but now I've discovered the Metol is open at the seam also. I can't really tell if any is missing or not.

So, I thought I might order the individual chemicals to keep on hand.

Thanks again

Mike

 

[Ole]

sodium tetraborate decahydrate

That's Borax. Very useful for D-76, and lots of other film developers.
Not so useful for paper developers, as most of us prefer a bit more activity there.

You can make "Sodium metaborate" from borax and sodium hydroxide. That means that borax and Kodalk are not the same thing, either.

 

[Tom Hoskinson]

I think that more so the fact where Glycine is involved.
Glycine is some what the same as hydroquinone in needing
a high ph for activation. TSP is used in at least one Glycine
only print developer. There are a few Glycine film developers
which use carbonate. So I think it accurate to say that
if Glycine is to participate it must have the high ph a
carbonate can supply. Dan

The developing reagent is not Glycine Dan, it's Glycin.

Glycine is an Amino Acid that has no photochemistry uses.

 

[Tom Hoskinson]

A 10 pound pail of Sodium Carbonate is $9.70 plus shipping at The Chemistry Store:

http://www.chemistrystore.com/sodium_carbonate.htm

 

[mikebarger]

Thanks for the link Tom

 

[Sparky]

What's the deal with glycin being expensive? Someone mentioned that - and I checked formulary's website - it seems cheap as dirt at $18.95 for 100g. I checked out a few prices from chem suppliers directly - and it was about $80 for the same amount!

Considering most recipes call for such a tiny amount of the stuff - I'd imagine 100g would go a LONG way...!

 

[Maine-iac]

I have wondered ever since A & H quit selling the old washing soda that we used for cleaning radiators, etc, which was Na2CO3 + 10 H2O, why it is now claimed to be the monohydrate in its resurrected form. The CRC Handbook says that the decahydrate is washing soda. I have not been able to get the A & H Washing Soda, so cannot test it. It is easier for me to get the pHPlus for adjusting pH of swimming pools. It is close enough to anhydrous for government work. In any case, as long as you know what you have, you can use more or less than the recipe calls for. In a developer like Ansco 130 or D-72, you will probably not notice the difference between anhydrous and monohydrated, but will see a difference between monohydrated and the true washing soda, as the ratio of molecular weights is 2.31. You need 2.31 times the weight of what CRC calls washing soda as of monohydrated sodium carbonate. The difference is water, of course.

Patrick,

To my knowledge, A&H has not stopped making washing soda. I bought a box at my local supermarket just a month or so ago. I don't know whether it's deca or mono-hydrate, but it works in my formulas the same as it always has for the past thirty years. I don't use the Ansco 130 formula, since I never could see the advantage of Glycin, but I use it in similar formulas like Ansco 125 or my variant of E-72, and it works just fine.

Larry

 

[eclarke]

What's the deal with glycin being expensive? Someone mentioned that - and I checked formulary's website - it seems cheap as dirt at $18.95 for 100g. I checked out a few prices from chem suppliers directly - and it was about $80 for the same amount!

Considering most recipes call for such a tiny amount of the stuff - I'd imagine 100g would go a LONG way...!

Which Chemical suppliers??..Evan Clarke

 

[Sparky]

Which Chemical suppliers??..Evan Clarke

Sorry - I spent ten minutes looking, and couldn't find it again. I was able to get some results googling. Most chemical suppliers can get you pretty much whatever you want.