Sourcing Ferric Ammonium EDTA in the US

[koraks]

Are Andrew's ingredients and amounts all that are needed for perfectly satisfactory C41 negatives

Yes. I've made similar developers. The differences in terms of image quality with official C41 formulas are very small.

2. Does what Andrew refer to as CD-4 come with different names in Europe and the U.K.?

No, it's referred to the same globally; as CD-4 or CD4. There are two CAS numbers that reflect a small difference, but the functional part of both molecules is the same. Shipping and duties can indeed make the material more expensive. I know of no domestic source in the UK. There are several sources in other parts of the world. They ultimately trace to China.

3. Would Andrew's amounts that he used for one film actually be OK for several films if used again within say a few hours ?

Yes; how many exactly will be a guess, but the capacity can be assumed to be the same as for commercial developers. This is usually considered to be in the 6-12 rolls per liter range.

 

[River Mantis]

Would like to make my own RA-4 and C-41 chems (mostly RA-4), but I cannot find a single source for the Ferric Ammonium EDTA anywhere. I’ve searched Artscraft, Photoforumarly, and major chemical suppliers like Flinn, CarolinaBio, and Fishers.

Without making my own, is my only option to use the alternative Ferric EDTA + Tetrasodium EDTA bleach that PE lists, or seeing if a ferricyanide bromide bleach from ECN-2 works?

It indeed works perfectly for both ECN-2 and C-41 (there is a commercial product which uses it) and allegedly for E-6 (because why shouldn't it)