Antichlor

Antichlor is a chemical compound used to remove residual chlorine from materials. This process is important in various industrial applications, particularly in textile manufacturing and pulp and paper production, where chlorine is often employed as a bleaching agent. Unreacted chlorine can damage fabrics and paper, leading to discoloration and degradation over time. Antichlors effectively neutralize this residual chlorine, preventing such damage and ensuring the quality and longevity of the finished products.

Common antichlors include sodium thiosulfate, sodium metabisulfite, and sulfur dioxide. Sodium thiosulfate, often referred to as "hypo" in photography, reacts with chlorine to form sodium chloride and sodium tetrathionate. Sodium metabisulfite and sulfur dioxide are also effective reducing agents that convert chlorine into less reactive chloride ions. The choice of antichlor depends on factors such as cost, effectiveness, and the specific material being treated. Proper application is crucial to avoid introducing other unwanted chemicals or altering the pH of the material. The use of antichlors is a vital step in ensuring the stability and performance of many common manufactured goods.