Re: which dichromate
On Fri, 9 Oct 2009, Keith Gerling wrote:
Mix a batch at the solubility of the ammonium dichromate: (13 grams to 50 cc distilled water) and see if it all goes into solution. If it does, it's ammonium.Does anyone know a simple method of determining whether a substance is Potassium vs. Ammonium dichromate?
If it's potassium, which is only about half as soluble, 50 cc would take only about 6 grams of the chemical.
As for am di being "faster," as I understand it, ammonium dichromate is only "faster" because there's a larger amount of it in a given amount of solution (as above).
I just started using a fresh batch of
what is supposed to be Pottasium dichromate and now I'm getting very bad results: staining and what looks to be overexposure. Whatever it is, I am using a saturated solution. Isn't Ammonium dichromate "faster"?