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Magnesium fluoride

Description Preparation References
Magnesium fluoride
Magnesium fluoride structure
Chemical Name:
Magnesium fluoride
afluon;irtran1;sellaite;Magnesium flux;magnesiumfluorure;MAGNESIUM FLUOIRDE;MAGNESIUM FLUORIDE;Magnesiumfluoride2;Magnesiumfluoride3;MAGNESIUM FLUORIDE H
Molecular Formula:
Formula Weight:
MOL File:

Magnesium fluoride Properties

Melting point:
1248 °C
Boiling point:
2260 °C
3.15 g/mL at 25 °C(lit.)
refractive index 
random crystals
White to off-white
Specific Gravity
Water Solubility 
87 mg/L (18 ºC)
Solubility Product Constant (Ksp)
pKsp: 10.29
CAS DataBase Reference
7783-40-6(CAS DataBase Reference)
EPA Substance Registry System
Magnesium fluoride (MgF2)(7783-40-6)
  • Risk and Safety Statements
  • Hazard and Precautionary Statements (GHS)
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-36-37/39
WGK Germany  3
RTECS  OM3325000
Hazard Note  Irritant
HS Code  28261900
Toxicity LD in guinea pigs (mg/kg): 1000 orally, 3000 s.c. (Waldbott)
Signal word:
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H303 May be harmfulif swallowed Acute toxicity,oral Category 5 P312
H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362
H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405 Store locked up.

Magnesium fluoride price More Price(22)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 343188 Magnesium fluoride pieces, 3-6 mm, 99.9% trace metals basis (excluding Na) 7783-40-6 25g $74.3 2018-11-13 Buy
Sigma-Aldrich 01192 Magnesium fluoride for glass industry 7783-40-6 1kg-r $121 2018-11-13 Buy
Alfa Aesar 011021 Magnesium fluoride, Optical Grade, 99.9% (metals basis) 7783-40-6 50g $138 2018-11-16 Buy
Alfa Aesar 011021 Magnesium fluoride, Optical Grade, 99.9% (metals basis) 7783-40-6 10g $31.8 2018-11-16 Buy
Strem Chemicals 93-1225 Magnesium fluoride, 99% 7783-40-6 500g $98 2018-11-13 Buy

Magnesium fluoride Chemical Properties,Uses,Production


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.


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


[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


Magnesium fluoride (MgF2) is a white crystalline salt. It is used in the electrolysis of aluminum ore to produce metallic aluminum and also as a reflective coating on various types of optical components. It is a tetragonal, birefringent crystal with the TiO2 type of structure.

Chemical Properties

white to light beige powder


Suitable for vacuum deposition. Magnesium fluoride occurs in nature as the mineral, sellaite. It is used in
glass and ceramics. Single crystals are used for polarizing prisms and lenses.


In the ceramics and glass industry.


Strong irritant. TLV: 2.5 mg(F)/m3.

Safety Profile

Moderately toxic by ingestion. When heated to decomposition it emits toxic fumes of F-. See also MAGNESIUM and FLUORIDES.

Magnesium fluoride Preparation Products And Raw materials

Raw materials

Preparation Products

Magnesium fluoride Suppliers

Global( 207)Suppliers
Supplier Tel Fax Email Country ProdList Advantage
Henan DaKen Chemical CO.,LTD.
+86-371-55531817 CHINA 21968 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693 CHINA 20680 55
Mainchem Co., Ltd.
+86-0592-6210733 CHINA 32457 55
Xiamen AmoyChem Co., Ltd
+86 (0)592-605 1114 CHINA 6374 58
Chemwill Asia Co.,Ltd.
86-21-51861608;;; CHINA 24001 58
Hubei Jusheng Technology Co.,Ltd.
86-188-71490254 CHINA 20095 58
Shanghai Zheyan Biotech Co., Ltd.
18017610038 CHINA 3623 58
City Chemical LLC
203.937.8400 United States 98 58
J & K SCIENTIFIC LTD. 400-666-7788 +86-10-82848833
+86-10-82849933; China 96815 76
Alfa Aesar 400-610-6006; 021-67582000
021-67582001/03/05 China 30168 84

Magnesium fluoride Spectrum

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