adding potassium ferrocyanide to salt can be fatal. Potassium ferrocyanide added to salt will be decomposed into highly toxic potassium cyanide, even fatal. Potassium ferrocyanide, commonly known as potassium xanthate and xanthate, is a light yellow crystalline particle.

ferrocyanide is composed of six cyanide ions and one ferrous ion. Because the combination of cyanide ions and iron is very firm, its chemical properties are very stable and it is not easy to decompose. Generally, it is added to salt as an anti-caking agent to prevent salt from caking.

Use of potassium ferrocyanide

It can be used as a pigment and used for fiber dyeing, which is an anti-caking agent for food permitted by GB276-214 in China. Potassium ferrocyanide solution reacts with iron salt solution to produce Prussian blue precipitate, which can be used for titration analysis of palladium, silver, osmium and uranium.

It decomposes when it is strongly burned, releasing nitrogen and generating potassium cyanide and iron carbide. Used to make potassium cyanide, potassium ferricyanide and pigments. Potassium ferrocyanide, as an anti-caking agent, can prevent salt from caking due to high water content.