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13142

Sigma-Aldrich

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:
Molecular Weight:
246.47
Número de EC:
Número MDL:
eCl@ss:
38030409
ID de la sustancia en PubChem:
NACRES:
NA.21

Nivel de calidad

200

densidad de vapor

<0.01 (vs air)

presión de vapor

<0.1 mmHg ( 20 °C)

ensayo

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

formulario

powder or crystals

calidad

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

impurezas

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)

pérdida

48.0-52.0% loss on drying, 450 °C

pH

5.0-9.2 (25 °C, 5%)

trazas de anión

chloride (Cl-): ≤150 mg/kg

trazas de catión

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

idoneidad

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

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Descripción general

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.

Código de clase de almacenamiento

13 - Non Combustible Solids

WGK

WGK 1

Punto de inflamabilidad F

Not applicable

Punto de inflamabilidad C

Not applicable

Certificate of Analysis

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Certificate of Origin

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