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Characteristics: Silvery, moderately hard alkaline-earth metal, readily fabricated by all standard methods. Lightest of the structural metals. Strong reducing agent. Electrical conductivity similar to aluminum. Soluble in acids, insoluble in water. Magnesium is the central element of the chlorophyll molecule and is also an important component of red blood corpuscles.
Hazards: Combustible at 650 oC (solid metal). Flammable, dangerous fire hazard (powder, flakes, etc.). Use dry sand or talc to extinguish.
GENERAL PROPERTIES
Symbol: | Mg |
Atomic Number: | 12 |
Atomic Weight: | 24.305 |
Density: | 1.738 gm/cc |
Melting Point: | 648.8 oC |
Boiling Point: | 1090 oC |
Thermal Conductivity: | 1.56 W/cm/oK @ 298.2 oK |
Electrical Resistivity: | 4.45 microhm-cm @ 20 oC |
Electronegativity: | 1.2 Paulings |
Specific Heat: | 0.243 Cal/g/oK @ 25 oC |
Heat of Vaporization: | 32.517 K-Cal/gm atom at 1090 oC |
Heat of Fusion: | 2.16 Cal/gm mole |
TYPICAL ANALYSES
Impurities in ppm
Material / Purity: | 2N8 | 4N |
Al | - | 35 |
Fe | - | 9 |
Si | - | <10 |
Ca | - | <5 |
Mn | 1000 | 4 |
Ni | 10 | 4 |
Cu | 200 | <5 |
Zn | - | 18 |
Pb | 100 | 6 |
Sn | 100 | 1 |
PURE MAGNESIUM SHEET