Cyanotype powders...??

[Zus]

Hey, I am wondering if anyone is familiair with the following chemicals for the usage in the cyanotype process....??
Ammonium Iron (III) Citrate
and Potassium Hexacyanoferrate (III)
I ordered these powders several years ago and I can't find any recipe for it online....
Anyone...??? Greetings from the Netherlands.

 

[pdeeh]

they are more commonly known as ferric ammonium citrate and potassium ferricyanide.

the typical formula is equal quantities of each of approx 8% ferricyanide solution and 20% citrate solution, mixed together just before use.

but there are many variations, mostly rather minor.

a bit of Googling will find much more information for you

 

[Zus]

Thanks...!