SODIUM THIOSULPHATE AR (PENTAHYDRATE)

SODIUM THIOSULPHATE AR (PENTAHYDRATE) SODIUM THIOSULPHATE AR (PENTAHYDRATE)
Article No. Grade Purity Cas no. Molecular Formula Molecular Weight H.S. Code Shelf Life
S0193405000 AR 99.5% 10102-17-7 Na2S2O3.5H2O 248.17 2832.3010
60 Months

Physical Properties

Physical state at 20 °C

Solid

Odour

Odorless

pH value

6 - 8.5

Melting Point/ Freezing point [°C]

48°C

Boiling point [°C]

> 100°C

Density [g/cm3]

1.75

Solubility in water [% weight]

79g/100 ml water @ 40C

Specifications

Appearance:

 Large, colourless crystals or coarse crystalline powder

Chloride (Cl):

 Max. 0.02%

Heavy metal (as Pb):

 Max. 0.001%

Assay (iodometric):

 99.5 - 101.0%

Sulphide (S):

 Passes test

pH (5% solution in water; 25°C):

 6.0 - 8.4

Insoluble matter (10% in water):

 Max. 0.005%

Nitrogen compounds (as N):

 Max. 0.002%

Sulphate and Sulphite (as SO4):

 Max. 0.1%
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Globally Harmonized System of classification and Labelling of Chemicals (GHS)

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