What is k3fecn6?

K3Fe(CN)6 is the chemical formula for potassium ferrocyanide, also known as yellow prussiate of potash. It is a coordination compound that has a tetrahedral geometry composed of one potassium ion (K+) and six cyanide ligands (CN-) surrounding a central iron ion (Fe2+). The compound is commonly used in the food industry as an anti-caking agent and as a color additive in processed meats. It is also used in photography and in the production of pigments and dyes. Potassium ferrocyanide is considered safe for consumption in small amounts, but excessive or prolonged exposure can be toxic.