Sodium Thiosulfate

Sodium thiosulfate commonly comes in the form of white, translucent crystals or powder. It is soluble in water and oil of turpentine, insoluble in alcohol and deliquescent in moist air.

Product Details

Formula:

Na2S2O3

CAS Number:

7772-98-7

Also Known As:

Sodium subsulfite; Sodium hyposulfite; Hyposulphite of soda

Structure:

292_Main_Sodium Thiosulfate.png

applications:

Sodium thiosulfate is used in photography, chrome tanning, bleaching, paper manufacturing, gold and silver extraction, and as an antidote for cyanide poisoning.

Download SDS

Typical Specifications

Data is representative of average lots;
data taken from specific lots may vary.

Appearance

White crystalline powder

Boiling Point, °C

100

Density, g/cm3

1.667

Melting point, °C

48

Molecular weight, g/mol

158.11

Odor

Odorless

Purity, %

99

Refractive index, n20/D

1.489

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