Magnesium Acetate

Magnesium Acetate Tetrahydrate BP Ph Eur Grade Specifications

Mg(CH3COO)2-4H2O -- 214.5 -- CAS 16674-78-5

DEFINITION
Content
98.0 per cent to 101.0 per cent of magnesium acetate (anhydrous substance).

CHARACTERS
Appearance
Colourless crystals or white, crystalline powder.
Solubility
Freely soluble in water and in alcohol.

IDENTIFICATION
A. Dissolve about 100 mg in 2 ml of water. Add 1 ml of dilute ammonia and heat. A white precipitate is formed that dissolves slowly on addition of 5 ml of ammonium chloride solution. Add 1 ml of disodium hydrogen phosphate solution. A white crystalline precipitate is formed.
B. It gives reaction of acetates.

TESTS
pH: 7.5 to 8.5.
Dissolve 2.5 g in carbon dioxide-free water and dilute to 50 ml with the same solvent.
Chlorides: Maximum 330 ppm.
Nitrates: Maximum 3 ppm.
Sulphates: Maximum 600 ppm.
Aluminium: Maximum 1 ppm.
Calcium: Maximum 100 ppm.
Potassium: Maximum 0.1 per cent.
Sodium: Maximum 0.5 per cent.
Heavy metals: Maximum 40 ppm.
Readily oxidizable substances: Dissolve 2.0 g in 100 ml of boiling water, add 6 ml of a 150 g/l solution of sulphuric  acid and 0.3 ml of 0.02 M potassium permanganate. Mix and boil gently for 5 min. The pink colour is not completely discharged.
Water: 33.0 per cent to 35.0 per cent, determined on 0.100 g.

Magnesium Acetate Tetrahydrate Analytical Reagent

Magnesium Acetate Tetrahydrate
(CH3COO)2Mg . 4H2O
Formula Wt 214.46
CAS Number 16674-78-5

REQUIREMENTS
Assay: 98.0-102.0% (CH3CO2)2Mg . 4H2O

MAXIMUM ALLOWABLE
Insoluble matter ................... 0.005%
Chloride (Cl) ....................... 0.001%
Nitrogen compounds (as N) . 0.001%
Sulfate (SO4) ..................... 0.005%
Barium (Ba) ........................ 0.001%
Calcium (Ca) ...................... 0.01%
Manganese (Mn) ................ 0.001%
Potassium (K) .................... 0.005%
Sodium (Na) ...................... 0.005%
Strontium (Sr) .................... 0.005%
Heavy metals (as Pb) ......... 5 ppm
Iron (Fe) ........................... 5 ppm.

Certifications :
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