硫酸镁 七水合物

MgSO₄ · 7H₂O

246.47

231-298-2

MFCD00149785

38030409

329750022

NA.21

meets analytical specification of Ph. Eur., BP,USP, FCC

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.

200

<0.01 (vs air)

<0.1 mmHg ( 20 ℃)

99.5-100.5% (calc. to the dried substance)

powder or crystals

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)

48.0-52.0% loss on drying, 450 ℃

5.0-9.2 (25 ℃, 5%)

chloride (Cl^-): ≤150 mg/kg

As: ≤2 ppm
Fe: ≤20 ppm
Pb: ≤4 ppm
Se: ≤30 ppm

complies for appearance of solution

O.O.O.O.O.O.O.[Mg++].[O-]S([O-])(=O)=O

1S/Mg.H2O4S.7H2O/c;1-5(2,3)4;;;;;;;/h;(H2,1,2,3,4);7*1H2/q+2;;;;;;;;/p-2

WRUGWIBCXHJTDG-UHFFFAOYSA-L

13 - Non Combustible Solids

WGK 1