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Sodium ferrocyanide, also known as tetrasodium hexacyanoferrate or sodium hexacyanoferrate (II), is a coordination compound of formula Na4Fe(CN)6 which forms semi-transparent yellow crystals at room temperature, and which decomposes at its boiling point. It is soluble in water and insoluble in alcohol, and the solution can react with acid or photodecompose to release hydrogen cyanide gas.
Additional recommended knowledge
In its hydrous form, Na4Fe(CN)6•10H2O (sodium ferrocyanide decahydrate), it is generally known as yellow prussiate of soda.
As yellow prussiate of soda, it is added to road and food grade salt as an anticaking agent. When combined with iron, it converts to a deep blue pigment which is the main component of Prussian blue. In photography it is used for bleaching, toning and fixing. It is used as a stabilizer for the coating on welding rods. In the petroleum industry it is used for removal of mercaptans.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Sodium_ferrocyanide". A list of authors is available in Wikipedia.|