SODIUM THIO SULPHATE (HYPO) INDUSTRIAL GRADE

SODIUM THIO SULPHATE (HYPO) INDUSTRIAL GRADE


Sodium Hyposulfite is an inorganic compound with the formula Na2S2O3.xH2O. Typically it is available as the white or colourless pentahydrate, Na2S2O3•5H2O. The solid is an efflorescent (loses water readily) crystalline substance that dissolves well in water. It is also called sodium hyposulfite or “hypo”. Sodium thiosulfate is an inorganic sodium salt composed of sodium and thiosulfate ions in a 2:1 ratio. The melting point of Sodium Hyposulfite is 48.5 °C. It is practically insoluble in alcohol. Sodium Hyposulfite is 20.9 g soluble in 100 cc water. The density of Sodium Hyposulfite is 1.7 g/cm³.

Property Value
Chemical formulaNa2S2O3
Molar mass158.11 g/mol for anhydrous form, 248.18 g/mol for pentahydrate form
Physical stateWhite, crystalline solid
OdorOdorless
Density1.67 g/cm3 for pentahydrate form
Melting point321 K for pentahydrate form

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