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Merck

237175

Magnesium nitrate hexahydrate

ACS reagent, 99%

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About This Item

Linear Formula:
Mg(NO3)2 · 6H2O
CAS Number:
13446-18-9
Molecular Weight:
256.41
NACRES:
NA.21
PubChem Substance ID:
329752449
UNSPSC Code:
12352302
EC Number:
233-826-7
MDL number:
MFCD00149779
Assay:
98.0-102.0% (ACS specification), 99%
Grade:
ACS reagent
Form:
solid

Key Documents

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InChI key

MFUVDXOKPBAHMC-UHFFFAOYSA-N

InChI

1S/Mg.2NO3.6H2O/c;2*2-1(3)4;;;;;;/h;;;6*1H2/q+2;2*-1;;;;;;

SMILES string

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

grade

ACS reagent

vapor density

6 (vs air)

assay

98.0-102.0% (ACS specification), 99%

form

solid

pH

5.0-8.2 (25 °C, 5%)

mp

89 °C (dec.) (lit.)

anion traces

chloride (Cl-): ≤0.001%, phosphate (PO43-): ≤5 ppm, sulfate (SO42-): ≤0.005%

cation traces

Ba: ≤0.005%, Ca: ≤0.01%, Fe: ≤5 ppm, K: ≤0.005%, Mn: ≤5 ppm, NH4+: ≤0.003%, Na: ≤0.005%, Sr: ≤0.005%, heavy metals: ≤5 ppm (by ICP-OES)

Quality Level

200

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General description

Magnesium nitrate hexahydrate is a hydrated magnesium salt. A mixture of magnesium nitrate hexahydrate and magnesium chloride hexahydrate has been reported as a potential phase change material (PCM) for the storage of latent thermal energy.

Application

Magnesium nitrate hexahydrate can be used:
  • In the synthesis of magnesium oxide (MgO) nanopowder by thermal plasma method.
  • As a starting material in the synthesis of magnesium nitrate – alumina composite [(1-x) Mg (NO3)2 – xAl2O3] via sol-gel method.
  • As a starting material for the synthesis of Mg-Al spinel precursors, required for the preparation of magnesium aluminate spinel (MgAl2O4) powder.

Storage Class

13 - Non Combustible Solids

wgk

WGK 1

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Certificates of Analysis (COA)

Lot/Batch Number
0000509199
0000509199
MKCZ6397
0000492297
0000492297

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Cell dimensions and space group of magnesium nitrate hexahydrate.
Mozzi RL and Bekebrede WR.
Acta Crystallographica, 14(12), 1296-1297 (1961)
A wet-chemical process yielding reactive magnesium aluminate spinel (MgAl2O4) powder.
Li JG, et al.
Ceramics International, 27(4), 481-489 (2001)
Performance of heat charge/discharge of magnesium nitrate hexahydrate and magnesium chloride hexahydrate mixture to a single vertical tube for a latent heat storage system.
Nagano K, et al.
Applied Thermal Engineering, 24(2), 209-220 (2004)
Vishwanath Hiremath et al.
ChemSusChem, 12(12), 2810-2818 (2019-04-10)
Although MgO-Al2 O3 is well known as having a spinel structure, the inversion of which occurs by exchange of the trivalent (Al3+ ) and divalent (Mg2+ ) cations, little analytical study of the degree of inversion has been carried out.
Vishwanath Hiremath et al.
Journal of environmental sciences (China), 76, 80-88 (2018-12-12)
The development of carbon dioxide (CO2) sorbents that can operate at elevated temperatures is significant for the advancement of pre-combustion capture technologies. Recently, promoter-based systems composed of alkali/alkaline earth metal nitrates and/or carbonates have been considered as next-generation solid sorbents
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