I found: hydroferrocyanate of the sesquioxide of iron, or, 2Fe2O33H2Cfy (This
formula may not reproduce well.) It's also called pure Prussian blue. When you
mix the salts of iron with cyanide, the by-product is Prussian blue.
--Encountered frequently when making collodion images; ferrous sulphate (iron)
developer and cyanide fixer. A beautiful by-product by the way, but probably
not good to inhale (acid in the developer).
Hope that helps. I have a page of 19th c. chemistry relating to it, if you're
interested.
France Scully Osterman
sculloster@aol.com
In a message dated 2/17/98 3:50:11 PM, you wrote:
<<Hello everybody.
I was looking through some photo books from the 1800's and came across
this. I was wondering if anyone knows what the twentith century name for
this chemical is.
ferro-sesquicyanuret of potassium.
Okay I get the potassium ferro part, what is sesquincyanuret?
thanks
Joe Portale
Tucson, AZ.
>>