MilliporeSigma
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MX0070

Supelco

Magnesium sulfate heptahydrate

Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Synonym(s):
Sulfuric Acid Magnesium Salt, Heptahydrate, Epsom Salts, Epsom salts
Linear Formula:
MgSO4 · 7H2O
CAS Number:
Molecular Weight:
246.47
MDL number:
EC Index Number:
231-298-2

Quality Level

Agency

meets USP/NF

vapor density

<0.01 (vs air)

vapor pressure

<0.1 mmHg ( 20 °C)

assay

98.0-102.0% (complexometric)

form

solid

impurities

≤0.005% Insoluble matter

pH

5.0-8.0 (25 °C, 50 g/L in H2O)

solubility

710 g/L

anion traces

chloride (Cl-): ≤5 ppm
nitrate (NO3-): ≤0.002%

cation traces

Ca: ≤0.02%
Fe: ≤5 ppm
K: ≤0.005%
Mn: ≤5 ppm
NH4+: ≤0.002%
Na: ≤0.005%
Sr: ≤0.005%
heavy metals: ≤5 ppm

shipped in

ambient

storage temp.

room temp

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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Packaging

50 kg in Drum, fibre

Application

Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Analysis Note

Ammonium (NH4)0.002% maxAssay (complexometric)98.0-102.0%Calcium (Ca)0.02% maxChloride (Cl)5ppm maxHeavy Metals (by ICP-OES)5ppm maxInsoluble matter0.005% maxIron (Fe)5ppm maxManganese (Mn)5ppm maxNitrate (NO3)0.002% maxPotassium (K)0.005% maxSodium (Na)0.005% maxStrontium (Sr)0.005% maxpH of a 5% solution at 25°C5.0-8.2

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Quality

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