13142

Magnesium sulfate heptahydrate

99.5-100.5% (calc. to the dried substance), meets analytical specification of Ph. Eur., BP,USP, FCC

• 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
• eCl@ss: 38030409
• PubChem Substance ID: 329750022
• NACRES: NA.21

Properties

• vapor density: <0.01 (vs air)
• Quality Level: 200
• vapor pressure: <0.1 mmHg ( 20 °C)
• Assay: 99.5-100.5% (calc. to the dried substance)
• form: powder or crystals
• quality: meets analytical specification of Ph. Eur., BP,USP, FCC
• impurities: acidity or alkalinity, in accordance; organic volatile impurities, complies (GC); residual solvents, complies; ≤0.001 ppm heavy metals (as Pb); ≤0.004% free alkali (as MgO); ≤0.01% free acid (as H₂SO₄)
• loss: 48.0-52.0% loss on drying, 450 °C
• pH: 5.0-9.2 (25 °C, 5%)
• anion traces: chloride (Cl^-): ≤150 mg/kg
• cation traces: As: ≤2 ppm; Fe: ≤20 ppm; Pb: ≤4 ppm; Se: ≤30 ppm
• suitability: complies for appearance of solution
• 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

General description

Magnesium sulfate heptahydrate is the hydrated salt of magnesium. The spin-Hamiltonian parameters of the (Cu(H₂O)₆)²⁺ complex in magnesium sulfate heptahydrate have been determined by electron spin resonance (ESR) spectral studies. Raman spectra of 10 hydrated and anhydrous forms of magnesium sulfates have been reported. Their crystal structure and space groups have been evaluated by Raman and XRD (X-ray diffraction) studies.

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable