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CAS No.: 7772-98-7

 SKUPurity CharacteristicsQuantityPrice
S8134-500GM500 gm$25.05
S8134-2.5KG2.5 kg$60.53
S8134-12KG12 kg$231.25
 S8134-BULK BULK Price on Request
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Additional Information

CAS No.7772-98-7
Chemical SynonymSodium thiosulphate
Appearance/FormColorless crystalline
FormulaNa2S2O3 . 5H2O
Molecular Weight248.19
MP52 °C (126 °F)
pH6.0 - 8.5 at 20 °C (68 °F)
SolubilitySoluble in water
Density1.01 g/mL
OtherThiosulfate anion reacts stoichiometrically with iodine, reducing it to iodide.
StorageHygroscopic; keep tightly closed in a dry, well-ventilated place
UsesIn photography, papermaking, dechlorination of water, lab reagent, bleaching, and in patina recipes to make greens and blues (copper, brass, bronze)
Transport InformationNot Regulated