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China and India are the leading exporters of sodium thiosulfate pentahydrate, collectively accounting for over 60% of global export value in 2023–2024, while the United States, Germany, and South Korea represent the largest importing markets. Sodium thiosulfate pentahydrate prices have remained relatively stable amid steady demand from pharmaceutical, photographic, and water treatment sectors. Export volumes from China increased modestly year-on-year, while Indian exports showed stronger growth, reflecting expanded manufacturing capacity and competitive pricing.
Sodium thiosulfate pentahydrate is a white, crystalline, odorless solid that is highly soluble in water and non-volatile at ambient conditions; it decomposes upon heating above approximately 48 °C, losing water of hydration. It is an inorganic salt and reducing agent, classified as a sulfur-containing oxyanion compound. It serves as a key intermediate in photographic fixing solutions, where it complexes and removes unexposed silver halides from emulsions. Its primary industrial applications include use in water treatment (e.g., chlorine neutralization), analytical chemistry (e.g., iodometric titrations), and as a precursor in the synthesis of other sulfur compounds. It is also employed in pharmaceutical formulations (e.g., antidotes for cyanide poisoning) and in certain textile and leather processing operations.
Titrimetry.
translucent crystals or white powder
This chemical is included in Fine Chemicals. See more about what is Sodium Thiosulfate Pentahydrate and Sodium Thiosulfate Pentahydrate SDS information.
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