potassium ferricyanide CAS#13746-66-2

CAS Number: 13746-66-2
Chemical Formula: C6FeN6.3K
Synonyms:

Potassium Ferricyanide, crystal
Tripotassium hexacyanoferrate
Potassium ferricyanide, 99+%, for analysis ACS

Appearance: Red Solid

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

potassium ferricyanide CAS#13746-66-2

Red prussiate (IUPAC name Potassium hexacyanoferrate(III), also known as red prussiate of Potash, Prussian red, and potassium ferricyanide) occurs as bright red crystals which are soluble in water. Potassium ferricyanide is manufactured by passing chlorine into a solution of potassium ferrocyanide. It is not considered to be toxic but is dangerous when heated or mixed with other chemicals.
Potassium ferricyanide is used to prepare Prussian Blue, the deep blue pigment in blue printing. It is used for the testing for ferrous ions. Potassium ferricyanide is widely used as an oxidizing agent in photographic processing to remove silver from negatives and positives, a process called dot etching. In color photograph, potassium ferricyanide is used to reduce the size of color dots without reducing their number, as a kind of manual color correction. Potassium ferricyanide is often used in physiological experiments as a means of increasing a solutions redox potential (Eo 436 mV at pH 7). Potassium ferricyanide is applied to harden iron and steel, in electroplating, dyeing wool and as a laboratory reagent.

potassium ferricyanide Chemical Properties

Melting point	°Cd ec.)
bulk density	900-1000kg/m3
density	1.85
vapor pressure	0Pa at 20℃
storage temp.	Store at +5°C to +30°C.
solubility	H2O: 1 M at 20 °C, complete, orange-brown
form	fine crystals
color	Orange to red
Specific Gravity	1.88
Odor	Odorless
PH	6-9 (25℃, 1M in H2O)
PH Range	6 - 9 at 329 g/l at 25 °C
Water Solubility	464 g/L (20 ºC)
Sensitive	Light Sensitive
Merck	14,7630
Exposure limits	ACGIH: TWA 1 mg/m3 NIOSH: IDLH 25 mg/m3; TWA 1 mg/m3
Stability:	Stable. Incompatible with ammonia, strong acids, strong oxidizing agents. Reaction with acids yields toxic gas. May discolour on exposure to light.
InChI	1S/6CN.Fe.3K/c61-2;;;;/q;;;;;;-3;3+1
InChIKey	MIMJFNVDBPUTPB-UHFFFAOYSA-N
SMILES	[K+].[K+].[K+].N#C[Fe-3](C#N)(C#N)(C#N)(C#N)C#N
CAS DataBase Reference	13746-66-2(CAS DataBase Reference)
EPA Substance Registry System	Ferrate(3-), hexakis(cyano-.kappa.C)-, potassium (1:3), (OC-6-11)- (13746-66-2)
Absorption	no transmittance (UV) in H2O at 1M

Safety Information

Hazard Codes	Xn
Risk Statements	32-20/21/22
Safety Statements	50A-36
RIDADR	UN 3077 9 / PGIII
WGK Germany	2
RTECS	LJ8225000
F	8
TSCA	TSCA listed
HS Code	28372000
Storage Class	11 - Combustible Solids
Hazard Classifications	Aquatic Chronic 2 Eye Irrit. 2

Product Application of potassium ferricyanide CAS#13746-66-2

It is used in many amperometric biosensors as an electron transfer agent replacing an enzyme's natural electron transfer agent with the enzyme glucose oxidase. It is a major component of Murakami's etchant for cemented carbides.

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