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M5921

Sigma-Aldrich

Magnesium sulfate heptahydrate

BioXtra, ≥99.0%

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Synonym(s):
Epsom salts
Linear Formula:
MgSO4 · 7H2O
CAS Number:
Molecular Weight:
246.47
EC Number:
MDL number:
eCl@ss:
38030409
PubChem Substance ID:
NACRES:
NA.25

vapor density

<0.01 (vs air)

Quality Level

vapor pressure

<0.1 mmHg ( 20 °C)

product line

BioXtra

Assay

≥99.0%

impurities

≤0.0005% Phosphorus (P)
≤0.005% Insoluble matter

solubility

H2O: 1 M, clear, colorless

cation traces

Al: ≤0.0005%
Ca: ≤0.01%
Cu: ≤0.0005%
Fe: ≤0.0005%
K: ≤0.005%
Mn: ≤0.0005%
NH4+: ≤0.002%
Na: ≤0.005%
Pb: ≤0.0005%
Sr: ≤0.005%
Zn: ≤0.0005%

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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This Item
M18806314013142
Magnesium sulfate heptahydrate BioXtra, &#8805;99.0%

Sigma-Aldrich

M5921

Magnesium sulfate heptahydrate

Premium Grade
Magnesium sulfate heptahydrate puriss. p.a., ACS reagent, &#8805;99.0% (KT)

Sigma-Aldrich

63140

Magnesium sulfate heptahydrate

Essential Grade
Magnesium sulfate heptahydrate 99.5-100.5% (calc. to the dried substance), meets analytical specification of Ph. Eur., BP,USP, FCC

Sigma-Aldrich

13142

Magnesium sulfate heptahydrate

Essential Grade
assay

≥99.0%

assay

≥99.0%

assay

≥99.0% (KT)

assay

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

impurities

≤0.0005% Phosphorus (P), ≤0.005% Insoluble matter

impurities

-

impurities

≤0.005% insoluble matter

impurities

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)

solubility

H2O: 1 M, clear, colorless

solubility

-

solubility

-

solubility

-

cation traces

Al: ≤0.0005%, Ca: ≤0.01%, Cu: ≤0.0005%, Fe: ≤0.0005%, K: ≤0.005%, Mn: ≤0.0005%, NH4+: ≤0.002%, Na: ≤0.005%, Pb: ≤0.0005%, Sr: ≤0.005%, Zn: ≤0.0005%

cation traces

-

cation traces

As: ≤0.1 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤1 mg/kg, K: ≤10 mg/kg, Mn: ≤5 mg/kg, NH4+: ≤20 mg/kg, Na: ≤10 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg, heavy metals: ≤5 ppm (by ICP-OES)

cation traces

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

Quality Level

200

Quality Level

200

Quality Level

-

Quality Level

-

General description

Magnesium sulfate heptahydrate is hydroscopic and is vulnerable to warm temperatures.

Application

Magnesium sulfate heptahydrate has been used:
  • as a component in Kreb′s Ringer buffer
  • as a component in minimal medium to culture Ralstonia solanacearum
  • in the preparation of maceration solution for Lamb′s lettuce cell isolation and isotonic glucose buffer

Biochem/physiol Actions

Magnesium sulfate heptahydrate is used as a source of magnesium in foliar application of fertilizers to plants.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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705578-5MG-PW

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MMYOMAG-74K-13

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Comprehensive analysis of mitochondrial permeability transition pore activity in living cells using fluorescence-imaging-based techniques
Bonora M, et al.
Nature Protocols, 11(6), 1067-1067 (2016)
Magnesium at Home: 25 Most Common Health Conditions & How Magnesium Salts Can Help, 27-27 (2018)
Plant-Based Remediation Processes, 85-85 (2013)
Exopolysaccharide Quantification for the Plant Pathogen Ralstonia solanacearum
Peyraud R, et al.
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