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Magnesium Chloride USP

MgCl2.6H2O **3.*0
Magnesium Chloride USP
Magnesium Chloride Hexahydrate USP[********6].
Magnesium Chloride Anhydrous USP*5.*1 [********3].

Magnesium Chloride contains not less than *8.0 percent and not more than **1.0 percent of MgCl2·6H2O.

Packaging and storage— Preserve in tight containers.
Labeling— Where the product is intended for use in hem dialysis, it is so labeled.
Identification— A solution (1 in *0) responds to the tests for Magnesium and for Chloride
pH: between 4.5 and 7.0, in a 1 in *0 solution in carbon dioxide-free water.
Insoluble matter— not more than 0.**5% is found.
Sulfate — A **-g portion shows no more sulfate than corresponds to 0.*0 mL of 0.**0 N sulfuric acid (0.**5%).
Barium— Dissolve 1 g in *0 mL of water, and add 1 mL of 2 N sulfuric acid: no turbidity is produced within 2 hours.
Limit of calcium— the limit is 0.*1%.
Potassium— Dissolve 5 g in 5 mL of water, and add 0.2 mL of sodium bitartrate TS: no turbidity is produced within 5 minutes.
Aluminum (where it is labeled as intended for use in hem dialysis)— the limit is 1 µg per g.
Heavy metals — the limit is 0.**1%.
Organic volatile impurities: meets the requirements.

Magnesium Chloride BP

MgCl2.6H2O
Magnesium Chloride BP
Magnesium Chloride Hexahydrate BP[********6].
Magnesium Chloride Anhydrous BP*5.*1 [********3].

DEFINITION
Content:  8.0 per cent to **1.0 per cent of MgCl2,6H2O.

CHARACTERS
Appearance: Colourless crystals, hygroscopic.
Solubility: Very soluble in water, freely soluble in ethanol (*6 per cent).

IDENTIFICATION
Water % (see Tests).
It gives reaction of chlorides.
It gives the reaction of magnesium.

TESTS
Solution S
Dissolve *0.0 g in carbon dioxide-free water R prepared from distilled water and dilute to **0.0 ml with the same solvent.
Appearance of solution: Solution S is clear and colourless.
Acidity or alkalinity: To 5 ml of solution S add 0.*5 ml of phenol red solution R. Not more than 0.3 ml of 0.*1 M hydrochloric acid or 0.*1 M sodium hydroxide is required to change the colour of the indicator.
Bromides: Maximum **0 ppm.
Sulphates: Maximum **0 ppm, determined on solution S.
Aluminium: Maximum 1 ppm, if intended for use in the manufacture of peritoneal dialysis solutions, hem dialysis solutions, or haemofiltration solutions.
Arsenic: Maximum 2 ppm, determined on 0.5 g.
Calcium: Maximum 0.1 per cent.
Iron: Maximum *0 ppm, determined on solution S.
Potassium: Maximum 5.0 × **2 ppm, if intended for use in the manufacture of parenteral dosage forms.
Atomic emission spectrometry: Passes the test
Heavy metals: Maximum *0 ppm.
Water: *1.0 per cent to *5.0 per cent, determined on *0.0 mg.

Magnesium Chloride FCC Fod Grade, US Food Chemical Codex

MgCl2·6H2O Formula wt **3.*0

DESCRIPTION
Magnesium Chloride occurs as colorless flakes or crystals. It contains six molecules of water of hydration. It is hygroscopic, very soluble in water, and freely soluble in alcohol.
Function: Color-retention agent; firming agent

REQUIREMENTS
Identification: A 1:*0 aqueous solution gives positive tests for Magnesium and for Chloride.
Assay: Not less than *9.0% and not more than **5.0% of MgCl2·6H2O.
Ammonium: Not more than 0.**5%.
Lead: Not more than 4 mg/kg.
Sulfate: Not more than 0.*3%.

Magnesium chloride (is an important coagulant used in the preparation of cheese and tofu. In Japan it is sold as nigari (derived from the Japanese word for "bitter"), In China, it is called lushui. Nigari or lushui consists mostly of magnesium chloride, with some magnesium sulfate and other trace elements. It is also an ingredient in baby formula milk.

Magnesium Chloride Hexahydrate ACS Analytical Reagent Specifications

Magnesium Chloride ACS American Chemical Society Reagent Grade
MgCl2 . 6H2O
Formula Wt **3.*0
CAS Number ********6

REQUIREMENTS
Assay: *************- *9.****2.0% MgCl2 . 6H2O

MAXIMUM ALLOWABLE
Insoluble matter: **- 0.**5%
Nitrate (NO3): *****- 0.**1%
Phosphate (PO4): ***- 5 ppm
Sulfate (SO4): *****- 0.**2%
Ammonium (NH4): ****- 0.**2%
Barium (Ba): *******- 0.**5%
Calcium (Ca): ******- 0.*1%
Manganese (Mn): ****- 5 ppm
Potassium (K): *****- 0.**5%
Sodium (Na): *******- 0.**5%
Strontium (Sr): ****- 0.**5%
Heavy metals (as Pb): 5 ppm
Iron (Fe): *********- 5 ppm