硫酸镁 七水合物

MgSO₄ · 7H₂O

246.47

MFCD00149785

231-298-2

Assay (complexometric): ≥ 99.5 %
Assay (complexometric; calculated on dried substance): 99.0 - 100.5 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.005 %
Acidity or alkalinity: passes test
pH-value (5 %; water; 25 °C): 5.0 - 8.0
Chloride (Cl): ≤ 0.0003 %
Total nitrogen (N): ≤ 0.002 %
Nitrate (NO₃): ≤ 0.002 %
Heavy metals (ACS): ≤ 0.0005 %
As (Arsenic): ≤ 0.0002 %
Ca (Calcium): ≤ 0.005 %
Cu (Copper): ≤ 0.0001 %
Fe (Iron): ≤ 0.0001 %
K (Potassium): ≤ 0.001 %
Mn (Manganese): ≤ 0.0005 %
Na (Sodium): ≤ 0.001 %
NH₄ (Ammonium): ≤ 0.002 %
Pb (Lead): ≤ 0.0001 %
Sr (Strontium): ≤ 0.005 %
Loss on drying (400 °C): 48.0 - 52.0 %
Corresponds to ACS, Reag. Ph Eur

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

300

ACS reagent

reag. Ph. Eur.

<0.01 (vs air)

<0.1 mmHg ( 20 ℃)

≥99.5% (complexometric)
99.0-100.5% dry basis (complexometric)

solid

5.0-8.0 (25 ℃, 50 g/L in H₂O)

710 g/L

1.68 g/cm³ at 20 ℃

900 kg/m³

chloride (Cl^-): ≤0.0003%
nitrate (NO₃^-): ≤0.002%

As: ≤ 0.0002%
Ca: ≤ 0.005%
Cu: ≤ 0.0001%
Fe: ≤ 0.0001%
K: ≤ 0.001%
Mn: ≤ 0.0005%
N: ≤ 0.002%
NH₄⁺: ≤ 0.002%
Na: ≤ 0.001%
Pb: ≤ 0.0001%
Sr: ≤ 0.005%
heavy metals: ≤ 0.0005%

2-30℃

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