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Inorganic Salts

Sodium Sulphite Anhydrous AR/ACS

RA002454 CAS 7757-83-7 AR/ACS

Identity

Product code
RA002454
CAS number
7757-83-7
Grade
AR/ACS
Purity
98%
Molecular formula
Na2SO3
Molecular weight
126.04

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour White crystalline —
Odour Odorless —
pH value 9.0 - 10.5 —
Melting point/ Freezing point [°C] 500 °C °C
Density [g/cm3] 2.63 g/cm3 g/cm3

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

Specifications

ParameterSpecificationUnit Method
Appearance White crystalline powder — —
Assay Min 98 % % iodometric
Insoluble matter in water Max 0.005 % % —
Acidity Passes test — —
Alkalinity Max 0.03 meq/g meq/g —
Chloride (Cl) Max 0.02 % % —
Heavy metal Max 0.001 % % —
Iron (Fe) Max 0.0005 % % —

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 RA002454-PK-25KG
500 g RA002454-PK-500G
50 kg RA002454-PK-50KG