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SODIUM THIOSULPHATE PENTAHYDRATE AR/ACS
Sodium hyposulfite pentahydrate
MSDS
DE
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TH
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COAs
Packings
500 g
(00500)
5000 g
(05000)
25 Kg
(0025K)
50 Kg
(0050K)
Print friendly version
Article No.
06050
Grade
AR/ACS
Purity
99.5%
CAS No.
10102-17-7
Molecular Formula
Na
2
S
2
O
3
.5H
2
O
Molecular Weight
248.17
H.S. Code
2832.3010
Shelf Life
60 Months
Physical Properties
Physical state at 20 °C
Solid
Colour
Colorless crystals
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
Assay (iodometric)
99.5 - 101.0%
Insoluble matter (10% in water)
Max. 0.005%
pH (5% solution in water; 25°C)
6.0 - 8.4
Nitrogen compounds (as N)
Max. 0.002%
Chloride (Cl)
Max. 0.02%
Heavy metal (as Pb)
Max. 0.001%
Sulphate and Sulphite (as SO4)
Max. 0.1%
Sulphide (S)
Passes test
Revision Date:
11-Mar-2016
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SODIUM THIOSULPHATE PENTAHYDRATE