63140

Magnesium sulfate heptahydrate

puriss. p.a., ACS reagent, ≥99.0% (KT)

• Synonym(s): Epsom salts
• Linear Formula: MgSO₄ · 7H₂O
• CAS Number: 10034-99-8
• Molecular Weight: 246.47
• EC Number: 231-298-2
• MDL number: MFCD00149785
• UNSPSC Code: 12352300
• eCl@ss: 38030409
• PubChem Substance ID: 329759792
• NACRES: NB.24

Properties

• grade: ACS reagent; puriss. p.a.
• Quality Level: 200
• vapor density: <0.01 (vs air)
• vapor pressure: <0.1 mmHg ( 20 °C)
• assay: ≥99.0% (KT)
• form: powder or crystals
• impurities: ≤0.005% insoluble matter
• pH: 5.0-8.2 (25 °C, 50 mg/mL in H₂O)
• anion traces: chloride (Cl^-): ≤5 mg/kg; nitrate (NO₃^-): ≤20 mg/kg
• cation traces: As: ≤0.1 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤1 mg/kg; K: ≤10 mg/kg; Mn: ≤5 mg/kg; NH₄⁺: ≤20 mg/kg; Na: ≤10 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg; heavy metals: ≤5 ppm (by ICP-OES)
• SMILES string: O.O.O.O.O.O.O.[Mg++].[O-]S([O-])(=O)=O
• InChI: 1S/Mg.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2
• InChI key: WRUGWIBCXHJTDG-UHFFFAOYSA-L

Description

Application

Magnesium sulfate heptahydrate can be used as a catalyst to synthesize tri/tetra-substituted imidazoles via a one-pot condensation reaction of aromatic aldehydes, benzil, aliphatic and aromatic primary amines, and ammonium acetate. It is also used to synthesize phenazine and quinoxaline derivatives.

Safety Information

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