|
|
| | Magnesium nitrate hexahydrate Chemical Properties |
| Melting point | 89 °C | | Boiling point | 330 °C | | density | 1.63 | | vapor density | 6 (vs air) | | vapor pressure | 1 mm Hg ( 621 °C) | | Fp | −26 °F | | storage temp. | 2-8°C | | solubility | H2O: 1 M at 20 °C, clear, colorless | | form | turnings | | Specific Gravity | 1.64 | | color | White | | PH | 5.0-8.2 (25℃, 50mg/mL in H2O) | | Water Solubility | 420 g/L (20 ºC) | | Sensitive | Hygroscopic | | Merck | 14,5674 | | BRN | 4948473 | | Stability: | Stable. Strong oxidizer - contact with organic material may lead to fire. Do not store near combustible materials. Incompatible with combustible materials, organics, strong reducing agents. | | CAS DataBase Reference | 13446-18-9(CAS DataBase Reference) | | EPA Substance Registry System | Magnesium (II) nitrate, hexahydrate (13446-18-9) |
| | Magnesium nitrate hexahydrate Usage And Synthesis |
| Uses | Sodium bisulfate is used for pickling metals; bleaching leather; carbonizing
wool; in carbonic acid baths, and manufacturing magnesia cements. | | Production Methods | Sodium bisulfate is a by-product of sodium sulfate manufacture. One process involves reacting sulfuric acid with sodium nitrate at high temperature to form nitric acid and sodium bisulfate:
NaNO3 + H2SO4 → NaHSO4 + HNO3 (g)
In the above reaction, nitric acid is obtained as vapor. It is purged from the system and collected in water to obtain nitric acid solution of desired concentration. Sodium bisulfate is separated by fractional crystallization.
| | Chemical Properties | White colourless crystal | | Uses | Magnesium nitrate hexahydrate may be used as a starting material for the synthesis of Mg-Al spinel precursors, required for the preparation of magnesium aluminate spinel (MgAl2O4) powder. | | 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. It has been employed as a base material in this mixture to evaluate the storage and effective utilization of urban waste heat from emerged co-generation systems. Its crystals belong to the monoclinic crystal system. | | Hazard | Low toxicity by ingestion. A mild skin and
eye irritant. | | Purification Methods | Crystallise the nitrate from water (2.5mL/g) by partial evaporation in a desiccator. It is deliquescent and is soluble in EtOH. After two recrystallisations, ACS grade salt has: metal (ppm) Ca (6.2), Fe (8.4), K (2), Mo (0.6), Na (0.8), Se (0.02). |
| | Magnesium nitrate hexahydrate Preparation Products And Raw materials |
|