This 1 lb package of Sodium Thiosulfate (Pentahydrate) is a high-quality chemical compound commonly used as a dechlorinating agent and reducing agent in laboratory, industrial, and technical applications. It is effective in neutralizing chlorine , making it suitable for water treatment processes, laboratory testing, and chemical preparation. Sodium thiosulfate pentahydrate is also widely used in photography processing, analytical chemistry, and educational laboratory settings where consistent and reliable reagent performance is required. Its crystalline form dissolves readily in water, allowing for easy handling and accurate dosing. Packaged in a secure container to help maintain product quality during storage, this sodium thiosulfate is intended for professional, laboratory, and industrial use only and is not suitable for food, drug, or household applications. 100% Pure Crystal Form ✔️ Technical-Grade Dechlorinator ✔️ Ideal For Agriculture & Aquaculture ✔️ Perfect For Aquarium Enthusiasts & Fish Keepers