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7439-95-4

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Basic Information
CAS No.: 7439-95-4
Name: Magnesium
Article Data: 626
Molecular Structure:
Molecular Structure of 7439-95-4 (Magnesium)
Formula: Mg
Molecular Weight: 26.3209
Synonyms: EckaGranules PK 31;Ecka Granules PK 51;Magnesium element;Magnum Forte;Mg 3820;Ozone magnez;PK 31;PK 51;Rieke's active magnesium;Magnesium Metal;Magnesium,ribbon;
EINECS: 231-104-6
Density: 0.889 g/mL at 25 °C
Melting Point: 89 °C (dec.)(lit.)
Boiling Point: 1090 °C(lit.)
Flash Point: -26 °F
Solubility: Reacts with water
Appearance: silver or grey rod, turnings or ribbon
Hazard Symbols: FlammableF,HarmfulXn
Risk Codes: 34-15-11-17-36/37/38-22-19
Safety: 43-7/8-43A-36-33-26
Transport Information: UN 1418/1869/2950/3264
PSA: 0.00000
LogP: 0.22500
Synthetic route

dolomite

7439-95-4

magnesium

Conditions
ConditionsYield
With calcium oxide In neat (no solvent) distillation at 1350 °C within a period of 2 hours;;99%
With SiO; CaO In neat (no solvent) distillation at 1350 °C within a period of 2 hours;;99%
With silicon In neat (no solvent)
84559-48-8

magnesium anthracene * 3 THF

7439-95-4

magnesium

Conditions
ConditionsYield
In toluene byproducts: anthracene, THF; suspn. heated to 100°C with stirring (1h); hot suspn. filtered, washed (hot toluene), dried (70°C, in vacuo);96%
In neat (no solvent, solid phase) byproducts: anthracene, THF; solid magnesium anthracene*3 THF heated to 200°C (high vacuum) in several stages;
In toluene byproducts: anthracene, THF; other Radiation; ultrasonic irradiation of suspn.; filtered, dried (in vacuo);
In n-heptane byproducts: anthracene, THF; other Radiation; ultrasonic irradiation of suspn.; filtered, dried (in vacuo);
In n-heptane byproducts: anthracene, THF; suspn. heated; filtered, dried (in vacuo);

magnesium fluoride

7439-95-4

magnesium

Conditions
ConditionsYield
With calcium carbide In neat (no solvent) equimolar amts. of CaC2 and MgF2; 4 h, 0.5 Torr, 1200°C;;85%
With CaC2 In neat (no solvent) equimolar amts. of CaC2 and MgF2; 4 h, 0.5 Torr, 1200°C;;85%
With calcium carbide In neat (no solvent) equimolar amts. of CaC2 and MgF2; 4 h, 0.5 Torr, 1100°C;;84%

magnesium oxide

75-20-7

calcium carbide

A

7439-95-4

magnesium

B

calcium oxide

Conditions
ConditionsYield
In neat (no solvent) equimolar amts. of CaC2 and MgO; 1-2 Torr, 1200°C;;A 80.05%
B n/a
In neat (no solvent) equimolar amts. of CaC2 and MgO; 1-2 Torr, 1200°C;;A 80.05%
B n/a
In neat (no solvent) equimolar amts. of CaC2 and MgO; 1-2 Torr, 1100°C;;A 30.52%
B n/a

NaSrMg2F7

A

magnesium fluoride

B

strontium fluoride

C

NaMgF3

D

SrMgF4

E

7439-95-4

magnesium

Conditions
ConditionsYield
In neat (no solvent, solid phase) heating at 850 °C;A 11%
B 11%
C 38%
D 36%
E 4%

magnesium oxide

A

80937-33-3

oxygen

B

7439-95-4

magnesium

Conditions
ConditionsYield
In gaseous matrix deoxidn. using laser to raise temp. above 4000 K required for sepn. of Mg and O, argon gas flow prevent Mg from reoxidn.; CO2 or YAG laser, 100-1000 W, chamber pressure 500 Pa - 0.1 MPa;A n/a
B 20%
With magnesium In neat (no solvent) partial dissociation of MgO (in a mixt. with metallic Mg) in an iron tube heated to red heat; O2 evolution is observed;;
In neat (no solvent) dissociation of solid MgO in metallic Mg and gaseous O2 at 2000-3000 K;;

magnesium bromide

A

7726-95-6

bromine

B

7439-95-4

magnesium

Conditions
ConditionsYield
Electrolysis;

magnesium hydride

A

1333-74-0

hydrogen

B

7439-95-4

magnesium

C

7429-90-5

aluminium

Conditions
ConditionsYield
titanium(III) chloride at 250 - 350℃; under 760.051 Torr; Product distribution / selectivity; Neat (no solvent); Balled milled;
10467-10-4

ethylmagnesium iodide

7439-95-4

magnesium

Conditions
ConditionsYield
In diethyl ether Electrolysis; current density = 1 A/dm^2, voltage = 8 V; room temperature; addition of dimethylaniline;;
In diethyl ether Electrolysis; current density = 1 A/dm^2, voltage = 8 V; room temperature; addition of dimethylaniline;;

dolomite

7647-14-5

sodium chloride

A

7440-23-5

sodium

B

7439-95-4

magnesium

Conditions
ConditionsYield
In neat (no solvent) 1200°C;; simultaneous preparation of Na and Mg;;
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History

In 1808, the metal magnesium itself was first produced in England by Sir Humphry Davy using electrolysis of a mixture of magnesia and mercury oxide. 
In 1831, Antoine Bussy prepared it in coherent form.
Davy's first suggestion for a name was magnium, but the name magnesium is now used.

Standards and Recommendations

DOT Classification:  4.3; Label: Dangerous When Wet (UN 2950); DOT Class: 4.1; Label: Flammable Solid (UN 1869); DOT Class: 4.3; Label: Danger When Wet, Spontaneously Combustible

Analytical Methods

For occupational chemical analysis use NIOSH: Elements (ICP), 7300.

Specification

Magnesium, its cas register number is 7439-95-4. It also can be called EckaGranules PK 31; Ecka Granules PK 51; Magnesium element; Magnum Forte; Ozone magnez. Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a silver or grey rod, turnings or ribbon. The more finely divided material reacts with water to liberate hydrogen, a flammable gas, though this reaction is not as vigorous as that of sodium or lithium with water. In finely divided forms is easily ignited. It burns with an intense white flame and it can be wax coated to render magnesium as nonreactive.It slowly oxidizes in moist air. Reacts very slowly with water at ordinary temperatures, less slowly at 100 °C.

Preparation of Magnesium:  Magnesium is principally obtained by electrolysis of fused magnesium chloride from brines, wells, and sea water. At the cathode, the Mg2+ ion is reduced by two electrons to magnesium metal:
Mg2+ + 2 e− → Mg

Uses of Magnesium: Magnesium is the third most commonly used structural metal, following iron and aluminium. It has been called the lightest useful metal by The Periodic Table of Videos. The main applications of magnesium are, in order: component of aluminium alloys, in die-casting (alloyed with zinc), to remove sulfur in the production of iron and steel, the production of titanium in the Kroll process. The second application field of magnesium is electronic devices. Because of low weight, good mechanical and electrical properties, magnesium is widely used for manufacturing of mobile phones, laptop and tablet computers, cameras, and other electronic components.

When you are using this chemical, please be cautious about it as the following:
1. In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add - Never use water);
2. Keep container tightly closed and dry;
3. Wear suitable protective clothing;
4. Take precautionary measures against static discharges;
5. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice;

You can still convert the following datas into molecular structure:
(1)InChI=1S/Mg;
(2)InChIKey=FYYHWMGAXLPEAU-UHFFFAOYSA-N;
(3)Smiles[Mg];