Sodium FerroCyanide
Formula: Na4Fe(CN)6
Molar mass: 303,91 g/mol
Solubility in water: 10.2 g/100 mL (10 °C); 17.6 g/100 mL (20 °C); 39.7 g/100 mL (96.6 °C)
Crystal structure: monoclinic
Synonyms: SODIUM FERROCYANIDE, Tetrasodium hexacyanoferrate, Sodium hexacyanoferrate(II), Sodium prussiate yellow, Tetrasodium ferrocyanide
Sodium ferrocyanide is the sodium salt of the coordination compound of formula [Fe(CN)6]4−. In its hydrous form, Na4Fe(CN)6 • 10H2O (sodium ferrocyanide decahydrate), it is sometimes known as yellow prussiate of soda. It is a yellow crystalline solid that is soluble in water and insoluble in alcohol. The yellow color is the color of ferrocyanide anion. Despite the presence of the cyanide ligands, sodium ferrocyanide has low toxicity (acceptable daily intake 0–0.025 mg/kg body weight. Sodium ferrocyanide is an odorless yellow solid. Sinks and mixes with water. (USCG, 1999).