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Inorganic Salts

Sodium Bisulphite Extra Pure

RA002334 CAS 7631-90-5 Extra Pure

Identity

Product code
RA002334
CAS number
7631-90-5
Grade
Extra Pure
Assay (specification)
Min 58 % (iodometric)
Molecular formula
NaHSO3
Molecular weight
104.06

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour White crystalline —
Odour Slight odor of sulfur dioxide —
Melting point/ Freezing point [°C] 150 °C °C
Density [g/cm3] 1.48 g/cm3 g/cm3
Solubility in water [% weight] Soluble in water —

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

Specifications

ParameterSpecificationUnit Method
Appearance White crystalline powder — —
Assay Min 58 % % iodometric
Chloride (Cl) Max 0.05 % % —
Heavy metal Max 0.001 % % —
Insoluble matter Max 0.005 % % —
Iron (Fe) Max 0.003 % % —
Solubility Passes test — —

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
500 g RA002334-PK-500G
50 kg RA002334-PK-50KG
5 kg RA002334-PK-5KG