7631. Potassium Ferrocyanide

Nomenclature

CAS number: 13943-58-3
Potassium (OC-6-11)-hexakis(cyano-κC)ferrate(4-) (4:1); tetrapotassium hexakis(cyano-C)ferrate(4-); potassium hexacyanoferrate(II); yellow prussiate of potash.
C6FeK4N6; mol wt 368.34.
C 19.56%, Fe 15.16%, K 42.46%, N 22.82%.
K4Fe(CN)6.

Description and references

Review of properties, chemistry and syntheses: The Chemistry of Ferrocyanides, American Cyanamid Co. (Beacon Press, New York, 1953) 112 p.

Derivative

Trihydrate.

Nomenclature

CAS number: 14459-95-1
K4Fe(CN)6.3H2O; mol wt 422.39.
K 37.03%, Fe 13.22%, C 17.06%, N 19.90%, H 1.43%, O 11.36%.

Properties

Soft, slightly efflorescent crystals; begins to lose water at 60°, becomes anhydr at 100°. d 1.85.

Use

Moderately strong oxidizer when coupled with ferricyanide.