K2S2O3

K2S2O3, also known as potassium thiosulfate, is a chemical compound with the formula K2S2O3. It is a white crystalline solid that is soluble in water. The compound is composed of potassium ions (K+), thiosulfate ions (S2O3^2-), and water molecules (H2O). Potassium thiosulfate is commonly used in photography as a fixing agent, where it helps to remove unexposed silver halide from photographic emulsions. It is also used in the textile industry for bleaching and as a reducing agent in various chemical processes. The compound is stable under normal conditions but can decompose upon heating, releasing sulfur dioxide and other gases. It is important to handle potassium thiosulfate with care, as it can cause skin and eye irritation. In addition, it should be stored away from strong oxidizing agents to prevent hazardous reactions.