*** Welcome to piglix ***

Ferric ferrocyanide

Prussian blue
Sample of prussian blue
Names
IUPAC name
Iron(II,III) hexacyanoferrate(II,III)
Other names
Berlin blue

Ferric ferrocyanide
Ferric hexacyanoferrate
Iron(III) ferrocyanide
Iron(III) hexacyanoferrate(II)

Parisian blue
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.034.418
EC Number 237-875-5
1093743
PubChem CID
UNII
Properties
C18Fe7N18
Molar mass 859.24 g·mol−1
Appearance Blue opaque crystals
Pharmacology
V03AB31 (WHO)
Oral
Hazards
Safety data sheet MSDS prussian blue
Related compounds
Other cations
Potassium ferrocyanide

Sodium ferrocyanide

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
N  (what is YesYN ?)
Infobox references
Prussian blue
 
About these coordinates     Color coordinates
Hex triplet #003153
sRGBB  (rgb) (0, 49, 83)
CMYKH   (c, m, y, k) (100, 41, 0, 67)
HSV       (h, s, v) (205°, 100%, 32%)
Source [1]
B: Normalized to [0–255] (byte)
H: Normalized to [0–100] (hundred)

Ferric ferrocyanide
Ferric hexacyanoferrate
Iron(III) ferrocyanide
Iron(III) hexacyanoferrate(II)

Sodium ferrocyanide

Prussian blue is a dark blue pigment with the idealized chemical formula Fe
7
(CN)
18
. To better understand the binding situation in this complex compound the formula can also be written as Fe
4
[Fe(CN)
6
]
3
· xH
2
O
. Another name for the color is Berlin blue or, in painting, Parisian or Paris blue. Turnbull's blue is the same substance, but is made from different reagents, and its slightly different color stems from different impurities.

Prussian blue was the first modern synthetic pigment. It is employed as a very fine colloidal dispersion, as the compound itself is not soluble in water. It is famously complex, owing to the presence of variable amounts of other ions and the sensitive dependence of its appearance on the size of the colloidal particles formed when it is made. The pigment is used in paints, and it is the traditional "blue" in blueprints and aizuri-e Japanese woodblock prints.

In medicine, Prussian blue is used as an antidote for certain kinds of heavy metal poisoning, e.g., by thallium and radioactive isotopes of caesium. In particular it was used to absorb 137
Cs+
from those poisoned in the Goiânia accident. Prussian blue is orally administered. The therapy exploits Prussian blue's ion exchange properties and high affinity for certain "soft" metal cations.


...
Wikipedia

...