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Inorganic Salts

Potassium Persulphate Extra Pure

RA002166 CAS 7727-21-1 Extra Pure

Identity

Product code
RA002166
CAS number
7727-21-1
Grade
Extra Pure
Purity
98%
Molecular formula
K2S2O8
Molecular weight
270.31

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour White powder —
Odour Odorless —
pH value 2.5 - 4.5 —
Melting point/ Freezing point [°C] 100 °C °C
Vapour density 9.3 —
Density [g/cm3] 2.48 g/cm3 g/cm3

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

Specifications

ParameterSpecificationUnit Method
Appearance A white powder — —
Assay Min 98 % % iodometric
Chloride (Cl) Max 0.005 % % —
Heavy metal Max 0.005 % % —
Iron (Fe) Max 0.002 % % —
Manganese (Mn) Max 0.0005 % % —

2 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 RA002166-PK-25KG
500 g RA002166-PK-500G
50 kg RA002166-PK-50KG
5 kg RA002166-PK-5KG