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Bases

Magnesium Hydroxide Extra Pure

RA003148 CAS 1309-42-8 Extra Pure

Identity

Product code
RA003148
CAS number
1309-42-8
Grade
Extra Pure
Purity
95%
Molecular formula
Mg(OH)2
Molecular weight
58.53

Classification

Categories
Bases primary

Technical Data

Properties

PropertyValueUnit
Physical state at 20 °C Solid —
Colour White powder —
Odour Odorless —
pH value 9.5 - 10.5 —
Melting point/ Freezing point [°C] 350 °C °C
Density [g/cm3] 2.36 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 Method
Appearance White powder — —
Arsenic (As) Max 0.0004 % % —
Calcium (Ca) Max 1.5 % % —
Loss on ignition (900 °C) 30 - 32.5 % % —
Iron (Fe) Max 0.07 % % —
Assay 95 - 100.5 % % complexometric
Identity Passes test — —
Appearance of solution Passes test — —
Substance soluble in water Max 1 % % —
Substance insoluble in acetic acid Max 0.1 % % —
Chloride (Cl) Max 0.1 % % —
Sulphate (SO4) Max 0.5 % % —
Heavy metal Max 0.003 % % —

3 grades of this substance are listed. Each grade is a separate product with its own specifications, pack sizes and documents.

Packaging

Pack size SKU
1 kg RA003148-PK-1KG