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1.05865 Supelco

Magnesium oxide

for analysis EMSURE®

Synonym: Magnesia usta, Magnesium oxide

  • CAS Number 1309-48-4

  • Empirical Formula (Hill Notation) MgO

  • Molecular Weight 40.30

  •  MDL number MFCD00011109

  •  EC Index Number 215-171-9

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Properties

Quality Level   300
assay   ≥97% (complexometric)
form   solid
pH   10.3 (20 °C in H2O, saturated solution)
bp   3600 °C/1000 hPa
mp   2800 °C
density   3.58 g/cm3 at 25 °C
bulk density   100 kg/m3
anion traces   carbonate (CO32-): ≤1.5% (as CO2)
  chloride (Cl-): ≤0.01%
  sulfate (SO42-): ≤0.02%
cation traces   Ba + Sr (as Ba): ≤ 0.005%
  Ca: ≤ 0.10%
  Cu: ≤ 0.001%
  Fe: ≤ 0.005%
  K: ≤ 0.005%
  Na: ≤ 0.30%
  Pb: ≤ 0.001%
  Zn: ≤ 0.0005%
InChI   1S/Mg.O
InChI key   CPLXHLVBOLITMK-UHFFFAOYSA-N
storage conditions   no restrictions.

Description

Analysis Note

Assay (complexometric): ≥ 97 %
Substances soluble in water: ≤ 0.5 %
Substances insoluble in hydrochloric acid: ≤ 0.10 %
Carbonate (as CO₂): ≤ 1.5 %
Chloride (Cl): ≤ 0.01 %
Sulfate (SO₄): ≤ 0.02 %
Total nitrogen (N): ≤ 0.002 %
Ca (Calcium): ≤ 0.10 %
Cu (Copper): ≤ 0.001 %
Fe (Iron): ≤ 0.005 %
K (Potassium): ≤ 0.005 %
Na (Sodium): ≤ 0.30 %
Pb (Lead): ≤ 0.001 %
Zn (Zinc): ≤ 0.0005 %
Barium and Strontium (as Ba): ≤ 0.005 %
Loss on ignition (1000 °C): ≤ 3.0 %

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