Magnesium sulfate heptahydrate

grade

ACS reagent

Quality Level

300

Agency

reag. Ph. Eur.

vapor density

<0.01 (vs air)

vapor pressure

<0.1 mmHg ( 20 °C)

product line

EMSURE^®

Assay

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

form

solid

impurities

≤0.005% Insoluble matter

loss

48.0-52.0% loss on drying 400 °C

pH

5.0-8.0 (25 °C 50 g/L in H₂O)

solubility

710 g/L

density

1.68 g/cm³ at 20 °C

bulk density

900 kg/m³

anion traces

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

cation traces

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%

storage temp.

2-30°C

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