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13142

Sigma-Aldrich

Magnesium sulfate heptahydrate

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

Synonym(s):

Epsom salts

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200 μG
CA$518.00

CA$518.00


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200 μG
CA$518.00

About This Item

Linear Formula:
MgSO4 · 7H2O
CAS Number:
Molecular Weight:
246.47
EC Number:
MDL number:
UNSPSC Code:
12352302
eCl@ss:
38030409
PubChem Substance ID:
NACRES:
NA.21
Assay:
99.5-100.5% (calc. to the dried substance)
Form:
powder or crystals

CA$518.00


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vapor density

<0.01 (vs air)

Quality Level

vapor pressure

<0.1 mmHg ( 20 °C)

Assay

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

form

powder or crystals

quality

meets analytical specification of Ph. Eur., BP,USP, FCC

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)

loss

48.0-52.0% loss on drying, 450 °C

pH

5.0-9.2 (25 °C, 5%)

anion traces

chloride (Cl-): ≤150 mg/kg

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23039194051863138
form

powder or crystals

form

crystals

form

powder or crystals

form

-

assay

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

assay

≥98%, 98.0-102.0% (ACS specification)

assay

≥98% (EDTA titration), ≥99.9% trace metals basis

assay

≥99.5% (KT)

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

200

cation traces

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

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)

cation traces

Al: ≤10 ppm, Ca: ≤10 ppm, Cd: ≤10 ppm, Cr: ≤10 ppm, Fe: ≤10 ppm, K: ≤10 ppm, Na: ≤30 ppm, Ni: ≤10 ppm, Pb: ≤10 ppm, Si: ≤10 ppm, Zn: ≤10 ppm

cation traces

Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 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, Li: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤10 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg

anion traces

chloride (Cl-): ≤150 mg/kg

anion traces

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

anion traces

chloride (Cl-): ≤20 ppm, nitrate (NO3-): ≤50 ppm

anion traces

chloride (Cl-): ≤5 mg/kg

pH

5.0-9.2 (25 °C, 5%)

pH

5.0-8.2 (25 °C, 5%)

pH

-

pH

5.0-8.0 (25 °C, 1 M in H2O)

General description

Magnesium sulfate heptahydrate is the hydrated salt of magnesium. The spin-Hamiltonian parameters of the (Cu(H2O)6)2+ complex in magnesium sulfate heptahydrate have been determined by electron spin resonance (ESR) spectral studies.[1] Raman spectra of 10 hydrated and anhydrous forms of magnesium sulfates have been reported. Their crystal structure and space groups have been evaluated by Raman and XRD (X-ray diffraction) studies.[2]

Application


  • Optimization of the fermentation media and growth conditions of Bacillus velezensis BHZ-29: This research utilizes Magnesium sulfate heptahydrate as a crucial micronutrient in the optimized growth medium for Bacillus velezensis, enhancing its bioactivity and efficacy in agricultural biocontrol applications (Shi et al., 2024).

  • Research on and Model Analysis of Flexural Mechanical Properties of Basic Magnesium Sulfate Cement Concrete Beams: The study focuses on the use of Magnesium sulfate heptahydrate in the production of magnesium sulfate cement, a material noted for its improved flexural strength and durability, which is critical for sustainable construction practices (Mei et al., 2024).

  • Antimicrobial Activity of Bacillus amyloliquefaciens BS4 against Gram-Negative Pathogenic Bacteria: Magnesium sulfate heptahydrate is used here as a component of the growth medium to enhance the production of antimicrobial compounds, illustrating its role in supporting microbial activity with potential applications in biotechnology and pharmaceuticals (Palacios-Rodriguez et al., 2024).

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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