63136

Magnesium sulfate

puriss. p.a., drying agent, anhydrous, ≥98.0% (KT), powder (very fine)

• Empirical Formula (Hill Notation): MgSO₄
• CAS Number: 7487-88-9
• Molecular Weight: 120.37
• EC Number: 231-298-2
• MDL number: MFCD00011110
• UNSPSC Code: 12352302
• PubChem Substance ID: 329759790
• NACRES: NA.21

Properties

• grade: drying agent; puriss. p.a.
• vapor density: <0.01 (vs air)
• vapor pressure: <0.1 mmHg ( 20 °C)
• assay: ≥98.0% (KT)
• form: powder (very fine)
• loss: ≤2% loss on ignition, 600 °C
• pH: ~7.9 (25 °C, 50 g/L)
• anion traces: chloride (Cl^-): ≤50 mg/kg; nitrate (NO₃^-): ≤40 mg/kg
• cation traces: Al: ≤20 mg/kg; As: ≤0.1 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤400 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤10 mg/kg; K: ≤200 mg/kg; Li: ≤5 mg/kg; Mn: ≤20 mg/kg; Mo: ≤5 mg/kg; NH₄⁺: ≤20 mg/kg; Na: ≤100 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg
• SMILES string: [Mg++].[O-]S([O-])(=O)=O
• InChI: 1S/Mg.H2O4S/c;1-5(2,3)4/h;(H2,1,2,3,4)/q+2;/p-2
• InChI key: CSNNHWWHGAXBCP-UHFFFAOYSA-L

Description

General description

Magnesium sulfate is an anhydrous magnesium salt.

Application

Anhydrous magnesium sulfate can be used as a drying agent in organic synthesis. Due to its high affinity towards water molecules, it removes trace amount of dissolved water from the organic extracts during the workup process. It is also used as a drying agent in the off-line supercritical fluid extraction method.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable