Sodium Thiosulfate, Pentahydrate, Crystals

Sodium Thiosulfate, Pentahydrate (Na₂S₂O₃·5H₂O), also known as Sodium Hyposulfite or HYPO, is a technical-grade reagent with a wide array of industrial and scientific applications. This compound is valued for its high purity (>99%) and versatile functionality. It is used as a photographic fixer, in chrome tanning, and for extracting silver from ores. Sodium Thiosulfate is a key agent for removing chlorine in bleaching, paper-making, and water dechlorination processes. It also serves as a mordant, bleaching agent, and reagent in various analytical techniques, including iodometry and the preparation of colloidal sulfur. This white crystalline substance has minimal impurities, with iron levels under 10 ppm and heavy metals below 6 ppm, ensuring consistent and reliable performance.

Key Features

• High-purity crystals (>99%) for industrial and scientific applications
• Essential for photographic fixer and chrome tanning
• Removes chlorine in bleaching, water dechlorination, and paper-making
• Used in silver extraction and preparation of colloidal sulfur
• Reliable reagent for iodometry and other analytical processes
• Low impurity levels: iron < 10 ppm, heavy metals < 6 ppm

Product Specifications