LabChem® Sodium Thiosulfate, 0.1N (0.1M)

LabChem® SODIUM THIOSULFATE, 0.1N (0.1M) is a standardized aqueous solution of sodium thiosulfate, prepared and assayed to an exact concentration of 0.1N (0.1M). Sodium thiosulfate is the classic reducing titrant used throughout iodometric analysis, reacting quantitatively with free iodine to form iodide and tetrathionate. Its certified normality provides a reliable reference for accurate, reproducible titration results.

It is commonly used as the titrant in iodometric titrations, including dissolved oxygen (Winkler method), residual chlorine, and COD determination. A pre-standardized solution removes the need to standardize the titrant in-house before each use. This reagent should be handled, stored, and used according to established laboratory safety procedures and the manufacturer's instructions.

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