Magnesium fluoride , AR,97.5% , 7783-40-6

Synonym(s):
MG516100;Sellaite

CAS NO.：7783-40-6

Empirical Formula: F2Mg

Molecular Weight: 62.3

MDL number: MFCD00011108

EINECS: 231-995-1

PRODUCT Properties

• 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
• form: random crystals
• color: White to off-white
• Specific Gravity: 3.15
• Water Solubility: 87 mg/L (18 ºC)
• 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: 0.463
  • b/nm: 0.463
  • c/nm: 0.305
  • α/o: 90
  • β/o: 90
  • γ/o: 90
  • V/nm3: 0.0652
• Exposure limits: ACGIH: TWA 2.5 mg/m3; NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
• InChI: InChI=1S/2FH.Mg/h2*1H;/q;;+2/p-2
• InChIKey: ORUIBWPALBXDOA-UHFFFAOYSA-L
• SMILES: [Mg](F)F
• CAS DataBase Reference: 7783-40-6(CAS DataBase Reference)
• EPA Substance Registry System: Magnesium fluoride (7783-40-6)

Description and Uses

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.

Magnesium fluoride (MgF2) is used to polarize corrective lenses of eyeglasses to reduce the glare of sunlight by selecting the orientation of the light waves passing through the lenses. MgF2 is also used to polarize windows, sunglasses, and similar optical items.

Safety

• 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: 36/37/38
• Safety Statements: 26-36-37/39
• WGK Germany: 3
• RTECS: OM3325000
• Hazard Note: Irritant
• TSCA: Yes
• HS Code: 28261900
• Toxicity: LD in guinea pigs (mg/kg): 1000 orally, 3000 s.c. (Waldbott)