Magnesium nitrate
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Magnesium nitrate refers to inorganic compounds with the formula Mg(NO3)2(H2O)x, where x = 6, 2, and 0. All are white solids.[2] The anhydrous material is hygroscopic, quickly forming the hexahydrate upon standing in air. All of the salts are very soluble in both water and ethanol.
Quick Facts Names, Identifiers ...
Names | |
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IUPAC name
Magnesium nitrate | |
Other names
Nitromagnesite (hexahydrate) | |
Identifiers | |
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3D model (JSmol) |
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ChEBI | |
ChemSpider |
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ECHA InfoCard | 100.030.739 |
EC Number |
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PubChem CID |
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RTECS number |
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UNII |
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UN number | 1474 |
CompTox Dashboard (EPA) |
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Properties | |
Mg(NO3)2 | |
Molar mass | 148.32 g/mol (anhydrous) 184.35 g/mol (dihydrate) 256.41 g/mol (hexahydr.) |
Appearance | White crystalline solid |
Density | 2.3 g/cm3 (anhydrous) 2.0256 g/cm3 (dihydrate) 1.464 g/cm3 (hexahydrate) |
Melting point | 129 °C (264 °F; 402 K) (dihydrate) 88.9 °C (hexahydrate) |
Boiling point | 330 °C (626 °F; 603 K) decomposes |
71 g/100 mL (25 °C)[1] | |
Solubility | moderately soluble in ethanol, ammonia |
Refractive index (nD) |
1.34 (hexahydrate) |
Structure | |
cubic | |
Thermochemistry | |
Heat capacity (C) |
141.9 J/mol K |
Std molar entropy (S⦵298) |
164 J/mol K |
Std enthalpy of formation (ΔfH⦵298) |
-790.7 kJ/mol |
Gibbs free energy (ΔfG⦵) |
-589.4 kJ/mol |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards |
Irritant |
GHS labelling: | |
Warning | |
H272, H315, H319, H335 | |
P210, P220, P221, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P405, P501 | |
NFPA 704 (fire diamond) | |
Safety data sheet (SDS) | External MSDS |
Related compounds | |
Other anions |
Magnesium sulfate Magnesium chloride |
Other cations |
Beryllium nitrate Calcium nitrate Strontium nitrate Barium nitrate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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