Magnesium Hydroxide mixture

Formula:

IngredientsQty GivenQty TakenActivity
Magnesium Sulphate100gFormation of Magnesium Hydroxide
Sodium Hydroxide15g
Light Magnesium oxide52.5g
Chloroform2.5mlPreservative
Peppermint Oil0.5mlFlavouring Agent
Purified water freshly boiled   and cooledq.s to 1000 mlVehicle

Procedure:

Sodium hydroxide was dissolved in purified water.

Light magnesium oxide was triturated with this solution to form a smooth cream.

Pour this suspension in a thin stream into a solution of the magnesium sulfate in purified water, stirring continuously during the mixing. 

Mixture is set aside in a closed container for 48 hrs.

Allow the precipitate to subside, remove the clear liquid, and wash the precipitate with purified water until the washings give only a slight reaction for sulfate.

Mix the washed precipitate with purified water, and add sufficient purified water to produce the required volume.

Theory:

MgO +H2O                Mg (OH)2                   

This is a  Hydration reaction which is very slow

Mg SO4 +2 NaOH                 Mg (OH)2       +  Na2SO        

Precipitation reaction by double decomposition 

All sulphate ions ( Na2SO4) must be removed as they enhance peristalsis of intestine.   

                                               

Category: 

Laxative (8-16 ml) and antacid (1-4 ml)

Container & storage:

Well closed container in   a cool place

Labeling Direction:

Shake well before use

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