What is a Thiosulfuric acid (H₂S₂O₃)?

Thiosulfuric acid (H₂S₂O₃) is a compound that consists of sulfur and oxygen atoms, known for being an unstable and highly reactive acid. It decomposes easily at room temperature, releasing sulfur. Thiosulfuric acid is commonly produced in aqueous solutions and often used in industrial processes, particularly for extracting metals such as gold and silver from sulfide ores. In the photographic industry, it is used as a "fixer" to remove excess silver after the development process. As a strong reducing agent, it plays a role in redox reactions, including metal reduction and bleaching processes.

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