Bases & alkalis

MAGNESIUM HYDROXIDE Extra Pure

Conforms to BP, IP specification Milk of magnesia

Article code: 4469H
CAS: 1309-42-8
Grade: Extra Pure
Purity: 95%
Category: Bases & alkalis

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Properties

Article No.: 4469H
Grade: Extra Pure
Purity: 95%
CAS No.: 1309-42-8
Molecular Formula: Mg(OH)2
Molecular Weight: 58.53
H.S. Code: 2816.1010
Shelf Life: 60 Months

Product information

Article No.	4469H	Grade	Extra Pure
Purity	95%	CAS No.	1309-42-8
Molecular Formula	Mg(OH)2	Molecular Weight	58.53
H.S. Code	2816.1010	Shelf Life	60 Months

Physical Properties

Physical state at 20 °C	Solid	Colour	White powder
Odour	Odorless	pH value	9.5 - 10.5
Melting point/ Freezing point [°C]	350°C	Density [g/cm3]	2.36
Solubility in water [% weight]	Insoluble in water

Specifications

Appearance	White powder	Assay (complexometric)	95 - 100.5%
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 (as Pb)	Max 0.003%	Arsenic (As)	Max 0.0004%
Calcium (Ca)	Max 1.5%	Loss on ignition (at 900°C)	30 - 32.5%
Iron (Fe)	Max 0.07%

Packaging options

1000 g (01000)

Details

MAGNESIUM HYDROXIDE Extra Pure Conforms to BP, IP specification Milk of magnesia MSDS DE EN FR KO PT ES TH TR COAs Packings 1000 g (01000) Print friendly version Article No. 4469H Grade Extra Pure Purity 95% CAS No. 1309-42-8 Molecular Formula Mg(OH) 2 Molecular Weight 58.53 H.S. Code 2816.1010 Shelf Life 60 Months Physical Properties Physical state at 20 °C Solid Colour White powder Odour Odorless pH value 9.5 - 10.5 Melting point/ Freezing point [°C] 350°C Density [g/cm3] 2.36 Solubility in water [% weight] Insoluble in water Specifications Appearance White powder Assay (complexometric) 95 - 100.5% 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 (as Pb) Max 0.003% Arsenic (As) Max 0.0004% Calcium (Ca) Max 1.5% Loss on ignition (at 900°C) 30 - 32.5% Iron (Fe) Max 0.07% Revision Date: 10-Aug-2026 Home Lab Chemicals Inorganic Bases MAGNESIUM HYDROXIDE