13142 Sigma-Aldrich

Magnesium sulfate heptahydrate

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

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Synonym: Epsom salts

  • CAS Number 10034-99-8

  • Linear Formula MgSO4 · 7H2O

  • Molecular Weight 246.47

  •  EC Number 231-298-2

  •  MDL number MFCD00149785

  •  PubChem Substance ID 24848013

Properties

Related Categories Chemical Synthesis, Inorganic Salts, Magnesium, Synthetic Reagents
vapor density   <0.01 (vs air)
vapor pressure   <0.1 mmHg ( 20 °C)
assay   99.5-100.5% (calc. to the dried substance)
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% heavy metals (as Pb)
  ≤0.004% free alkali (as MgO)
  ≤0.01% free acid (as H2SO4)
loss   48-52% loss on drying, 450 °C
pH   5.0-9.2 (25 °C, 5%)
anion traces   chloride (Cl-): ≤100 mg/kg
cation traces   As: ≤2 mg/kg
  Fe: ≤20 mg/kg
  Pb: ≤4 mg/kg
  Se: ≤30 mg/kg
suitability   complies for appearance of solution

Price and Availability

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