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Inorganic Salts

Barium Sulphate

RA000722 CAS 7727-43-7 AR

Identity

Product code
RA000722
CAS number
7727-43-7
Grade
AR
Purity
97.5%
Molecular formula
BaSO4
Molecular weight
233.39

Classification

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour White powder —
pH value 7 —
Melting point/ Freezing point [°C] 1580 °C °C
Boiling point [°C] 1600 °C °C
Density [g/cm3] 4.5 g/cm3 g/cm3
Solubility in water [% weight] Insoluble in water —

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

Specifications

ParameterSpecificationUnit
Appearance Fine, white, odorless, tasteless, bulky powder, free from grittiness —
Phosphate (PO4) To comply IP tests —
Heavy metal Max 0.001 % %
Sulphide (S) Passes test —
Arsenic (As) Max 0.0002 % %
Loss on ignition (at 600 ± 50°C) Max 2.0 % %
Bulkiness To comply IP tests —
Assay 97.5 - 100.5 % %
Solubility Practically insoluble in water, in organic solvents, and in solutions of acids and of alkalies —
Identifications To comply IP, BP, USP tests —
Acidity or alkalinity To comply IP, BP tests —
pH (10% w/w solution) 3.5 - 10.0 —
Acid soluble matter Max 0.3 % %
Oxidisable sulfur compounds To comply BP 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
25 kg RA000722-PK-25KG
500 g RA000722-PK-500G