SODIUM THIOSULPHATE PENTAHYDRATE
SODIUM THIOSULPHATE PENTAHYDRATE Extra Pure
Confirming to BP,USP.
Short Name: SODIUM THIOSULPHATE PENTAHYDRATE
Synonym: Sodium hyposulfite pentahydrate
Basic Details
Article No.
LG4296
Grade
Extra Pure
Purity
99%
CAS No.
10102-17-7
HS Code
2832.3010
Shelf Life
60 Months
Packings Avialable
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
Chemical Specifications
Appearance
Large, colourless crystals or coarse crystalline powder
Assay (iodometric)
99-100.5%
Identity
Passes test
Appearance of solution
Passes test
pH (5% solution in water)
6.0 - 8.4
Chloride (Cl)
Max 0.05%
Sulphate and Sulphite (as SO4)
Max 0.2%
Sulphide (S)
Passes test
Heavy metal (as Pb)
Max 0.001%
Calcium (Ca)
Passes test
Water (H2O)
32.0 - 37.0%
Safety Information & Hazard Symbols