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63140

Sigma-Aldrich

Magnesium sulfate heptahydrate

puriss. p.a., ACS reagent, ≥99.0% (KT)

Synonym(s):

Epsom salts

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About This Item

Linear Formula:
MgSO4 · 7H2O
CAS Number:
10034-99-8
Molecular Weight:
246.47
EC Number:
231-298-2
MDL number:
MFCD00149785
UNSPSC Code:
12352302
eCl@ss:
38030409
PubChem Substance ID:
329759792
NACRES:
NB.24

grade

ACS reagent
puriss. p.a.

vapor density

<0.01 (vs air)

vapor pressure

<0.1 mmHg ( 20 °C)

Assay

≥99.0% (KT)

form

powder or crystals

impurities

≤0.005% insoluble matter

pH

5.0-8.2 (25 °C, 50 mg/mL in H2O)

anion traces

chloride (Cl-): ≤5 mg/kg
nitrate (NO3-): ≤20 mg/kg

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)

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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Application

Magnesium sulfate heptahydrate can be used as a catalyst to synthesize tri/tetra-substituted imidazoles via a one-pot condensation reaction of aromatic aldehydes, benzil, aliphatic and aromatic primary amines, and ammonium acetate. It is also used to synthesize phenazine and quinoxaline derivatives.

Storage Class Code

13 - Non Combustible Solids

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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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)
Kirsten M Ellegaard et al.
Current biology : CB, 30(13), 2520-2531 (2020-06-13)
Most bacterial species encompass strains with vastly different gene content. Strain diversity in microbial communities is therefore considered to be of functional importance. Yet little is known about the extent to which related microbial communities differ in diversity at this
Sulfates on Mars: A systematic Raman spectroscopic study of hydration states of magnesium sulfates.
Wang A, et al.
Geochimica et Cosmochimica Acta, 70(24), 6118-6135 (2006)
Philippe Jean et al.
Nature communications, 11(1), 3208-3208 (2020-06-27)
Inner hair cells (IHCs) are the primary receptors for hearing. They are housed in the cochlea and convey sound information to the brain via synapses with the auditory nerve. IHCs have been thought to be electrically and metabolically independent from
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Developmental cell, 52(2), 223-235 (2019-12-24)
Cell polarity is a key feature in the development of multicellular organisms. For instance, asymmetrically localized plasma-membrane-integral PIN-FORMED (PIN) proteins direct transcellular fluxes of the phytohormone auxin that govern plant development. Fine-tuned auxin flux is important for root protophloem sieve
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