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Inorganic Salts

Sodium Thiosulphate Pentahydrate Extra Pure

RA002466 CAS 10102-17-7 Extra Pure

Identity

Product code
RA002466
CAS number
10102-17-7
Grade
Extra Pure
Purity
99%
Molecular formula
Na2S2O3.5H2O
Molecular weight
248.17

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour Colorless crystals —
Odour Odorless —
pH value 6 - 8.5 —
Melting point/ Freezing point [°C] 48 °C °C
Boiling point [°C] Min 100 °C °C
Density [g/cm3] 1.75 g/cm3 g/cm3

These are recorded catalogue property values. Product specification limits, where available, are listed under Specifications.

Specifications

ParameterSpecificationUnit Method
Appearance Large, colourless crystals or coarse crystalline powder — —
Calcium (Ca) Passes test — —
Water 32.0 - 37.0 % % —
Assay 99 - 100.5 % % iodometric
Identity Passes test — —
pH 6.0 - 8.4 — —
Chloride (Cl) Max 0.05 % % —
Sulphate and Sulphite Max 0.2 % % —
Sulphide (S) Passes test — —
Heavy metal Max 0.001 % % —

4 grades of this substance are listed. Each grade is a separate product with its own specifications, pack sizes and documents.

Packaging

Pack size SKU
25 kg RA002466-PK-25KG
500 g RA002466-PK-500G
50 kg RA002466-PK-50KG
1 kg RA002466-PK-1KG
5 kg RA002466-PK-5KG