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Magnesium chloride hexahydrate

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Magnesium chloride hexahydrate Basic information

Product Name:
Magnesium chloride hexahydrate
Synonyms:
  • Magnesium Chloride, Hexahydrate. USP/FCC
  • MAGNESIUM CHLORIDE HEXAHYDRATE BIOXT
  • Magnesium chloride hexahydrate for analysis EMSURE ACS,ISO,Reag. Ph Eur
  • MAGNESIUM CHLORIDE HEXAHYDRATE*CELL
  • MAGNESIUM CHLORIDE HEXAHYDRATE, FOR
  • Magnesium chloride hexahydrateACS reagent, 99.0-102.0% (Titration)
  • Magnesium chloride hexahydrateAnalytical Reagent Grade, ≥ 99.0% (Assay)
  • Magnesium chloride hexahydrate, 99.999% trace metals basis
CAS:
7791-18-6
MF:
Cl2H12MgO6
MW:
203.3
EINECS:
616-575-1
Product Categories:
  • Magnesium Salts
  • Materials Science
  • Inorganic Chemicals
  • Companion Products and ReagentsSynthetic Reagents
  • Metal and Ceramic Science
  • Inorganic salt,food additives
  • BioUltraProtein Structural Analysis
  • DNA&RNA Purification
  • Molecular Biology
  • Magnesium Salts
  • Metal and Ceramic Science
  • Salts
  • Insect Platform
  • Serum-free Media
  • Analytical Reagents for General Use
  • Inorganic Salts
  • MagnesiumProtein Structural Analysis
  • Optimization Reagents
  • Synthetic Reagents
  • X-Ray Crystallography
  • Magnesium
  • Pharmacopoeia (USP)
  • Pharmacopoeia A-ZPharmacopoeia (USP)
  • Pharmacopoeial Inorganics
  • ACS GradeSynthetic Reagents
  • Essential Chemicals
  • Routine Reagents
  • Molecular Biology Reagents
  • Optimization ReagentsMolecular Biology
  • Reagents
  • M-N, Puriss p.a. ACS
  • Puriss p.a. ACS
  • Protein Structural Analysis
Mol File:
7791-18-6.mol
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Magnesium chloride hexahydrate Chemical Properties

Melting point:
117 °C
Density 
1.569
storage temp. 
2-8°C
solubility 
H2O: 1 M at 20 °C, clear, colorless
form 
Solid
color 
White to slightly gray
Specific Gravity
1.569
Odor
Odorless
PH Range
7
PH
4.5-7.0 (50g/l, H2O, 20℃)
Water Solubility 
2350 g/L (20 ºC)
Sensitive 
Hygroscopic
λmax
λ: 260 nm Amax: 0.030
λ: 280 nm Amax: 0.025
Merck 
14,5662
Stability:
Stable. Incompatible with strong oxidizing agents. Protect from moisture.
InChIKey
DHRRIBDTHFBPNG-UHFFFAOYSA-L
LogP
-1.380 (est)
CAS DataBase Reference
7791-18-6(CAS DataBase Reference)
EPA Substance Registry System
Magnesium chloride, hexahydrate (7791-18-6)
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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
Toxicity
LD50 orally in Rabbit: 8100 mg/kg

MSDS

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Magnesium chloride hexahydrate Usage And Synthesis

Description

Magnesium 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.

Chemical Properties

The pure form of the compound is a colorless monoclinic crystal, but industrial versions typically have a yellowish-brown hue. It has a salty and bitter taste and is deliquescent. It is easily soluble in water and ethanol and will decompose when heated in air, releasing HCl gas around 118°C, which turns into oxychloride. When heated at high temperatures, it decomposes into MgO and HCl.

Uses

Used in adjustment of ion strength.

Uses

  • Magnesium chloride hexahydrate has been used in wash buffer for the purification of protein from Saccharomyces cerevisiae.
  • It has been used for the preparation of extracellular (Ringer) solution for juxtacellular recording of single neurons in freely moving rats.
  • It has been used as a supplement to study effect of desiccation on bacterial viability.

Definition

ChEBI: Magnesium dichloride hexahydrate is a hydrate that is the hexahydrate form of magnesium dichloride. It is a hydrate, a magnesium halide and an inorganic chloride. It contains a magnesium dichloride.

General Description

Magnesium chloride hexahydrate is a colorless, crystalline solid. On heating, it loses water of crystallization and affords magnesium oxide. It has been tested as a potential phase change material (PCM) for use in cooking indoors and during the low intensity solar radiation periods. Due to its suitable thermo-physical properties, it can be used as storage media in solar cookers. Its flame retardancy action on 100% woven cotton fabric has been investigated. Its heat capacity has been evaluated.

Purification Methods

Crystallise 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.]

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 DOI:10.1016/J.TCA.2012.07.021
[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 DOI:10.1081/SCC-200050956
[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 DOI:10.1016/S0043-1354(99)00151-7
[4] Purification of Laboratory Chemicals DOI:10.5860/choice.50-6768

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