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Magnesium chloride hexahydrate

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Magnesium chloride hexahydrate Basic information
Magnesium chloride hexahydrate Chemical Properties
  • Melting point:117 °C
  • Density 1.569
  • storage temp. Store at RT.
  • solubility H2O: 1 M at 20 °C, clear, colorless
  • form Solid
  • color White to slightly gray
  • Specific Gravity1.569
  • OdorOdorless
  • PH4.5-7.0 (50g/l, H2O, 20℃)
  • PH Range7
  • Water Solubility 2350 g/L (20 ºC)
  • λmaxλ: 260 nm Amax: 0.030
    λ: 280 nm Amax: 0.025
  • Sensitive Hygroscopic
  • Merck 14,5662
  • Stability:Stable. Incompatible with strong oxidizing agents. Protect from moisture.
  • CAS DataBase Reference7791-18-6(CAS DataBase Reference)
  • EPA Substance Registry SystemMagnesium chloride, hexahydrate (7791-18-6)
Safety Information
  • Hazard Codes Xi
  • Risk Statements 36/37/38
  • Safety Statements 24/25-36-26
  • WGK Germany 1
  • RTECS OM2975000
  • 3
  • TSCA Yes
  • HS Code 28273100
  • ToxicityLD50 orally in Rabbit: 8100 mg/kg
Magnesium chloride hexahydrate Usage And Synthesis
  • DescriptionMagnesium chloride hexahydrate is the hydrated form of magnesium chloride. Magnesium chloride is a mineral supplement used to prevent and treat low amounts of magnesium in the blood and a versatile compound with a number of uses in food preparation, health and personal well-being areas. Magnesium chloride is also used in road care, to synthesize other magnesium compounds, to remove dyes and industrial dye wastes, for the dust control, in the textile production, and as an industrial dye and dye waste remover. Magnesium chloride hexahydrate is used as catalyst for organic synthesis, e.g. 3,4‐Dihydropyrimidin‐2‐(1H)‐one. Magnesium chloride hexahydrate is also a promising heat/thermal storage material.
  • References[1] Radim Pilar, Ladislav Svoboda, Pavla Honcova and Lucie Oravova, Study of magnesium chloride hexahydrate as heat storage material, Thermochimica Acta, 2012, vol. 546, 81-86
    [2] Guo-Lin Zhang and Xiao-Hua Cai, Magnesium Chloride Hexahydrate Catalyzed One‐Pot Synthesis of 3,4‐Dihydropyrimidin‐2‐(1H)ones Under Solvent‐Free Conditions, Synthetic Communications, 2006, 829-833
    [3] BH Tan, TT Teng and AKM Omar, Removal of dyes and industrial dye wastes by magnesium chloride, Water Research, 2000, vol. 34, 597-601
  • Chemical PropertiesWhite crystalline powder
  • UsesUsed in adjustment of ion strength.
  • DefinitionChEBI: A hydrate that is the hexahydrate form of magnesium dichloride.
  • Purification MethodsCrystallise it from hot water (3.3g/mL) by cooling. Dry it in a vacuum at ~175o, or heat the hydrate in a stream of HCl. When the hydrate is heated above 180o it is hydrolysed to the oxychloride (Mg2OCl2). It is deliquescent; store it in a well-stoppered vessel. [Bryce-Smith Inorg Synth VI 9 1960, Ehrlich in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 908 1963.]
Magnesium chloride hexahydrate Preparation Products And Raw materials
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