702587
Potassium ferricyanide(III)
powder or chunks, <10 μm, 99%
Synonym(s):
Potassium hexacyanoferrate(III), Red prussiate
About This Item
Recommended Products
Quality Level
Assay
99%
form
powder or chunks
particle size
<10 μm
pH
6-9 (25 °C, 329 g/L)
solubility
water: soluble 329 g/L at 20 °C
anion traces
chloride (Cl-): ≤0.01%
sulfate (SO42-): ≤0.01%
SMILES string
[K+].[K+].[K+].N#C[Fe-3](C#N)(C#N)(C#N)(C#N)C#N
InChI
1S/6CN.Fe.3K/c6*1-2;;;;/q;;;;;;-3;3*+1
InChI key
MIMJFNVDBPUTPB-UHFFFAOYSA-N
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General description
Application
- To prepare the X-gal staining solution for staining cryosectioned tissues of injured neonatal mouse heart.
- Reducing power assay of freeze-dried ethanolic extract of Issopus officinalis.
- In combination with glutaraldehyde and osmium tetroxide for post-fixation of biological samples prior to epoxy embedding.
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Aquatic Chronic 2 - Eye Irrit. 2
Supplementary Hazards
Storage Class Code
13 - Non Combustible Solids
WGK
WGK 2
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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There are several other Potassium ferricyanide(III) products available. How does Product No. 702587 differ from other chemically identical products?
Specifications are available for each product. Product No. 702587 is the only Potassium ferricyanide(III) product available from Sigma-Aldrich that has a particle size of <10 μm. The other products are generally described as either powders or crystals.
After diluting Potassium Ferricyanide, Product 702587, with water, I observed that the solution turned blue, and not the typical brownish-yellow color. Is that a problem?
This likely means that your water contains some iron (II) (i.e., ferrous iron). Potassium ferricyanide and hydrochloric acid are actually the reagents typically used to demonstrate ferrous salts using the Turnbull Blue reaction.
Is there a reference for using Potassium Ferricyanide, Product 702587, in the Turnbull Blue reaction?
There are many variations on the basic Turnbull Blue technique. A commonly performed procedure is the procedure of Lillie and Geer. See Lillie, R.D. & Geer, J.C. On the relation of enterosiderosis pigments of man and guinea pig, melanosis and melanosis of colon and villi and the intestinal iron update and storage mechanism. American Journal of Pathology, 47, 965-1007 (1965).
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