Skip to content
Inorganic Salts

Potassium Persulphate AR

RA002167 CAS 7727-21-1 AR

Identity

Product code
RA002167
CAS number
7727-21-1
Grade
AR
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
Appearance A white powder —
Manganese (Mn) Max 0.0001 % %
Assay Min 98 % %
Insoluble matter Max 0.003 % %
Chloride (Cl) Max 0.002 % %
Ammonium (NH4) Max 0.0005 % %
Arsenic (As) Max 0.00004 % %
Copper (Cu) Max 0.001 % %
Iron (Fe) Max 0.0005 % %
Lead (Pb) Max 0.001 % %

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
500 g RA002167-PK-500G