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Sigma-Aldrich

Magnesium sulfate

puriss. p.a., drying agent, anhydrous, ≥98.0% (KT), powder (very fine)

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About This Item

Empirical Formula (Hill Notation):
MgSO4
CAS Number:
Molecular Weight:
120.37
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.21

grade

drying agent
puriss. p.a.

Quality Level

vapor density

<0.01 (vs air)

vapor pressure

<0.1 mmHg ( 20 °C)

Assay

≥98.0% (KT)

form

powder (very fine)

loss

≤2% loss on ignition, 600 °C

pH

~7.9 (25 °C, 50 g/L)

anion traces

chloride (Cl-): ≤50 mg/kg
nitrate (NO3-): ≤40 mg/kg

cation traces

Al: ≤20 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤400 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤10 mg/kg
K: ≤200 mg/kg
Li: ≤5 mg/kg
Mn: ≤20 mg/kg
Mo: ≤5 mg/kg
NH4+: ≤20 mg/kg
Na: ≤100 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

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

InChI

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

InChI key

CSNNHWWHGAXBCP-UHFFFAOYSA-L

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General description

Magnesium sulfate is an anhydrous magnesium salt.

Application

Anhydrous magnesium sulfate can be used as a drying agent in organic synthesis. Due to its high affinity towards water molecules, it removes trace amount of dissolved water from the organic extracts during the workup process. It is also used as a drying agent in the off-line supercritical fluid extraction method.

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Development of an improved method to extract pesticide residues in foods using acetontrile with magnesium sulfate and chloroform
Liu G, et al.
Journal of Chromatography A, 1218, 1429-1436 (2011)
Comparison of magnesium sulfate and sodium sulfate for removal of water from pesticide extracts of foods
Schenck FJ, et al.
Journal of Sulfur Chemistry, 85, 1177-1180 (2002)
Evaluation of drying agents for off-line supercritical fluid extraction
Burford MD, et al.
Journal of Chromatography A, 657, 413-427 (1993)
Validation of Analytical Method for Determination of 352 Pesticide Residues in Soil by LC- MS/MS.
El-Gohary AA.
Middle East Journal of Applied Sciences, 4(3), 589-599 (2014)
Eagleson M.
Concise Encyclopedia Chemistry, 889-889 (1994)

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