Potassium ferrocyanide trihydrate (CAS No. 14459‑95‑1; formula K₄Fe(CN)₆·3H₂O; MW ≈ 422.4 g/mol) is a light yellow crystalline salt. It dissolves in water (~28.9 g/100 mL), is nonflammable, and stable under ambient conditions. Utilized in analytical, food, and industrial applications.