| Identification | More | [Name]
Magnesium fluoride | [CAS]
7783-40-6 | [Synonyms]
MAGNESIUM FLUORIDE
afluon
irtran1
magnesiumfluoride(mgf2)
magnesiumfluorure
sellaite
Magnesium flux
magnesium fluoride coating quality bal. 0.7-1.5 mm
Magnesium fluoride, powder
Magnesiumfluoride2
Magnesiumfluoride3
Magnesiumfluoridewhitextl
MAGNESIUM FLUORIDE, GRANULATION MAX. 0.1 MM
MAGNESIUM FLUORIDE, PIECES, 2-8MM, 99.99 %
MAGNESIUM FLUORIDE, TECH.
MAGNESIUM FLUORIDE, RANDOM CRYSTALS, 99. 99+%, OPTICAL GRADE
MANGANESE(II) IODIDE 99%
MAGNESIUM FLUORIDE COATING QUALITY UMICORE.0.7-1.5 MM
MAGNESIUM FLUORIDE FOR GLASS INDUSTRY
MAGNESIUM FLUORIDE POWDER, PURE | [EINECS(EC#)]
231-995-1 | [Molecular Formula]
F2Mg | [MDL Number]
MFCD00011108 | [Molecular Weight]
62.3 | [MOL File]
7783-40-6.mol |
| Chemical Properties | Back Directory | [Appearance]
white to light beige powder | [Melting point ]
1263 °C (lit.) | [Boiling point ]
2227 °C/1 atm (lit.) | [density ]
3.15 g/mL at 25 °C(lit.)
| [refractive index ]
1.365 | [Fp ]
12.00°C | [form ]
random crystals
| [color ]
White to off-white | [Specific Gravity]
3.15 | [Water Solubility ]
87 mg/L (18 ºC) | [Specific Heat Capacity]
Cp(crystal):0.988764J/(g·K),at 25℃ | [Crystal Structure]
Tetragonal, Rutile | [crystal system]
square | [Merck ]
14,5665 | [Solubility Product Constant (Ksp)]
pKsp: 10.29 | [Space group]
P42/mnm | [Lattice constant]
| a/nm | b/nm | c/nm | α/o | β/o | γ/o | V/nm3 | | 0.463 | 0.463 | 0.305 | 90 | 90 | 90 | 0.0652 |
| [Exposure limits]
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3 | [Cosmetics Ingredients Functions]
ANTIPLAQUE
ORAL CARE | [InChI]
InChI=1S/2FH.Mg/h2*1H;/q;;+2/p-2 | [InChIKey]
ORUIBWPALBXDOA-UHFFFAOYSA-L | [SMILES]
[Mg](F)F | [Hardness, Mohs]
5.5 | [Knoop Microhardness]
500, kg/mm2 | [CAS DataBase Reference]
7783-40-6(CAS DataBase Reference) | [EPA Substance Registry System]
7783-40-6(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
GHS07 | [Signal word ]
Warning | [Hazard statements ]
H335 | [Precautionary statements ]
P261-P271-P304+P340+P312-P403+P233-P405-P501 | [Hazard Codes ]
Xi | [Risk Statements ]
R36/37/38:Irritating to eyes, respiratory system and skin . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S37/39:Wear suitable gloves and eye/face protection . | [WGK Germany ]
3
| [RTECS ]
OM3325000
| [Hazard Note ]
Irritant | [TSCA ]
Yes | [REACH Registrations]
Active | [HS Code ]
28261900 | [Storage Class]
13 - Non Combustible Solids | [Hazard Classifications]
STOT SE 3 | [Safety Profile]
Moderately toxic by
ingestion. When heated to decomposition it
emits toxic fumes of F-. See also
MAGNESIUM and FLUORIDES. | [Toxicity]
LD in guinea pigs (mg/kg): 1000 orally, 3000 s.c. (Waldbott) |
| Hazard Information | Back Directory | [Hazard]
Strong irritant. TLV: 2.5 mg(F)/m3. | [Chemical Properties]
Magnesium Fluoride is a fine white crystalline powder with low chemical reactivity. This relative inertness makes possible some of its uses, eg, stable permanent films to alter light transmission properties of optical and electronic materials. | [Chemical Properties]
white to light beige powder | [Characteristics]
Magnesium fluoride (MgF₂) is a tetragonal crystal with a rutile-type structure, having lattice parameters of a = 4.64 Å and c = 3.06 Å. Its point group is 4/mmm, and its space group is P4₂/mnm. When exposed to ultraviolet radiation or electron-beam excitation, it exhibits faint purple fluorescence. MgF₂ crystals possess excellent optical and polarising properties, making them particularly suitable for ultraviolet and infrared spectroscopy. They are transparent over a broad wavelength range (110 nm–7.5 μm) and are therefore widely used in space telescope optics. Single crystals are also employed in vacuum-ultraviolet-transparent windows, polarising prisms, and optical lenses.
Magnesium fluoride thin films exhibit a low refractive index (n ≈ 1.38), a broad transmission range (120–8,000 nm), a wide bandgap (≈11 eV), excellent thermal stability, high mechanical strength, and a high laser-induced damage threshold. These properties make MgF₂ an important material for the fabrication of anti-reflective coatings, high-reflectivity coatings, and high-damage-threshold optical coatings. Consequently, MgF₂ thin films are widely used in a variety of optical coating applications. |
| Questions And Answer | Back Directory | [Description]
Magnesium fluoride is a by-product of the manufacture of metallic beryllium and uranium. It is a fine white crystalline powder with low chemical reactivity.
Magnesium fluoride is used as flux in magnesium metallurgy and in the ceramics industry. Magnesium fluoride may be used for the extraction of aluminum from arc-furnace alloys with Fe, Si, Ti, and C. Optical windows of highly purified magnesium fluoride which transmit light from the vacuum ultraviolet (140 nm) into the infrared (7) are recommended for use as ultraviolet optical components for the use in space exploration. Magnesium fluoride is can be also used as an antireflection coating material having a good antireflection effect and a low refractive index.
| [Uses]
In Mg metallurgy and in the ceramics industry, Magnesium fluoride is used as a flux. Single crystals of alkaline-earth fluorides, such as Magnesium fluoride, are suitable for optical applications because of their large domain of transparency from the ultraviolet to the middle infrared region. Infrared transparent windows may be prepared by hot-pressing Magnesium fluoride powder.
Ternary intercalation compounds of graphite with fluorine and Magnesium fluoride have been prepared; these compounds have high electrical conductivity and would therefore have an important potential as cathodes or new electroconductive materials. Finally, the eutectic NaF–MgF2 has been proposed in advanced latent-heat energy storage for solar power systems. | [Preparation]
Magnesium fluoride is prepared by treating a magnesium salt solution with hydrofluoric acid or sodium fluoride:
MgSO4 + 2HF → MgF2 + 2H+ + SO42–
or by adding hydrofluoric acid to magnesium carbonate:
MgCO3 + 2HF → MgF2 + CO2 + H2O
| [References]
[1] John R. Papcun, Fluorine Compounds, Inorganic, Magnesium, Kirk- Othmer Encyclopedia of Chemical Technology, 2000
[2] H. Tanaka, M. Kobayashi, T. Sakakibara, Method of producing magnesium fluoride coating, antireflection coating, and optical element, Patent, 2013
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