Magnesium Chloride Hexahydrate

Grades

IP

BP/EP

USP

Description

Colorless crystals; hygroscopic

Colorless crystals; hygroscopic

Colorless, Odorless deliquescent flacks or crystals

Identification

It gives reactions of chlorides and gives reactions to magnesium salts

It gives reactions of chlorides and gives reactions of magnesium

It gives reactions of chloride and gives reactions of magnesium

Solubility

Very soluble in water, freely soluble in ethanol (95%)

Very soluble in water, freely soluble in ethanol (96%)

Very soluble in water, freely soluble in alcohol

Alkalinity/Acidity

NMT 0.3 ml of 0.01 M HCl or 0.01 M NaOH is required

NMT 0.3 ml of 0.01 M HCl or 0.01 M NaOH is required

-

Arsenic

Max 2 ppm

Max 2 ppm

-

Insoluble Matter

-

-

Max 0.005%

Ph

-

-

4.5 7.0

Barium

-

-

No turbidity is produced within 2 h.

Iron

Max  10 ppm

Max 10 ppm

-

Aluminium

Max 1 ppm

Max 1 ppm

Max 1 ppm

Heavy Metals

Max 20 ppm

Max 10 ppm (EP)

-

Clarity of Solution

Clear and colorless

Clear and colorless

-

Potassium

-

Max 500 ppm

Max 1 ppm

Calcium

0.1% 

0.1% 

Max 0.01%

Bromide

-

Max 500 ppm

-

Water

-

51.0% - 55.0%

-

Sulphate

Max 100 ppm

Max 100 ppm

Max 0.005%

Chloride  

-

-

Max 0.005%

Assay Dry Basis

98.0% to 101.0%

98.0% to 101.0%

98.0% to 101.0%