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Merck

230391

Magnesium sulfate heptahydrate

ACS reagent, ≥98%

Synonym(s):

Epsom salts

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About This Item

Linear Formula:
MgSO4 · 7H2O
CAS Number:
10034-99-8
Molecular Weight:
246.47
PubChem Substance ID:
329752370
eCl@ss:
38030409
UNSPSC Code:
12352302
NACRES:
NA.21
EC Number:
231-298-2
MDL number:
MFCD00149785
assay:
≥98%
98.0-102.0% (ACS specification)
grade:
ACS reagent
form:
crystals

Product Name

Magnesium sulfate heptahydrate, ACS reagent, ≥98%

InChI key

WRUGWIBCXHJTDG-UHFFFAOYSA-L

InChI

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

SMILES string

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

grade

ACS reagent

vapor density

<0.01 (vs air)

vapor pressure

<0.1 mmHg ( 20 °C)

assay

≥98%
98.0-102.0% (ACS specification)

form

crystals

impurities

≤0.005% insolubles

pH

5.0-8.2 (25 °C, 5%)

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 (by ICP-OES)

Quality Level

200

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Application

Magnesium sulfate heptahydrate can be used as a Lewis acid catalyst to synthesize:      
  • Phenazine and quinoxaline derivatives via a condensation reaction between o-phenylenediamines and 1,2-dicarbonyl compounds.
  • Imidazole derivatives via one-pot multicomponent condensation reaction of aromatic aldehydes, benzil, aliphatic, and aromatic primary amines.

NaBH4 supported on MgSO4 7H2O can be used as an efficient catalyst for the reduction of α, β-unsaturated carbonyl compounds to corresponding alcohols.

General description

Magnesium sulfate heptahydrate is a hydrated salt of magnesium. It is commonly used as a catalyst in organic synthesis.

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX8922
MKCX8923
MKCX8921
MKCX8916
MKCX8917

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Experimental investigation of the stability and evaporation of sulfate and chloride brines on Mars.
Altheide T, et al.
Earth and Planetary Science Letters, 282(1), 69-78 (2009)
Primer Extension Analysis of HBV DNA with Strand-Specific Primers.
Jung J and Kim K.
Bio-protocol, 5(15) (2015)
ESR studies of (Cu(H2O)6)2+ in magnesium sulfate heptahydrate.
Radhakrishna S and Bhaskar Rao T.
Journal of Magnetic Resonance, 32(1), 71-81 (1978)
Benjamin S Waldman et al.
Cell, 180(2), 359-372 (2020-01-21)
Toxoplasma gondii chronically infects a quarter of the world's population, and its recrudescence can cause life-threatening disease in immunocompromised individuals and recurrent ocular lesions in the immunocompetent. Acute-stage tachyzoites differentiate into chronic-stage bradyzoites, which form intracellular cysts resistant to immune
Aimee K Murray et al.
Environmental health perspectives, 128(10), 107007-107007 (2020-10-22)
Antimicrobial resistance (AMR) is one of the most significant health threats to society. A growing body of research demonstrates selection for AMR likely occurs at environmental concentrations of antibiotics. However, no standardized experimental approaches for determining selective concentrations of antimicrobials
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