KI3

KI3, also known as KI-3, is a chemical compound with the formula K2[Fe(CN)6]. It is a yellow crystalline solid that is commonly used in analytical chemistry and as a reagent in various chemical reactions. KI3 is a coordination complex, where the iron (Fe) atom is in the +3 oxidation state and is coordinated by six cyanide (CN) ligands. The potassium (K) ions are counterions that help to balance the charge of the complex.

KI3 is known for its high stability and its ability to form complexes with a wide range of metal ions. It is often used in the determination of certain metal ions in solution, such as copper (Cu) and nickel (Ni), through the formation of colored complexes. The color of these complexes can be used to quantify the amount of the metal ion present.

In addition to its analytical applications, KI3 is also used in the synthesis of other chemical compounds. For example, it can be used as a precursor in the synthesis of iron-based catalysts and in the preparation of iron-based pigments.

KI3 is generally considered to be a safe compound when handled properly. However, like all chemical compounds, it should be handled with care to avoid skin and eye contact. In case of accidental ingestion, seek medical attention immediately.