Specification :

Synonyms: hexacyanoferrate( 4-) dicopper( 2+ ) ; cupric hexacyanoferrate( II) ;
CAS  : [ 13601-13-3] EINECS: 237-080-3
Molecular Formula and Weight C6Cu2FeN6= 339.05.
Heptahydrate: Cu2[ Fe( CN) 6] · 7H2O = 465.15 CAS   [ 14840-55-2]
Properties: Reddish-brown powder or cubic crystals; ppts as a colloid or gel. Practically insol in water, dil acids, most organic solvents. Sol in NH4OH, solns of alkali cyanides.
Application: As pigment; in photographic toning baths; to lower electric resistance of soil and electrode-to-soil contacts