2.  melting point :1263 °C  boiling point: 2260 °C  physical state at room temperature: Solid  colour: white  density: 3.148 g/cm 3  solubility in water: 0.013 g/100 mL  electrical conductivity: poor

3. laboratory preparation: Store in a cool, dry area. Store in a tightly sealed container. Wash thoroughly after handling. Prevent skin contact. May cause burns if moisture is present. reactivity towards water / acid / alkali: low

4. Avoid Strong Acids Hazardous in the case of skin and eye contact Corrosive to eyes and skin

5. In optics Lens are usually coated with a thin layer of magnesium fluoride. Thin layers of magnesium fluoride are frequently applied to the surfaces of optical elements as part of optical coating such as anti-reflective coatings.

6. It is transparent in wide range of wavelengths in crystalline form.

7. http://www.sciencelab.com/msds.php?msdsI d=9924548 http://www.sciencelab.com/msds.php?msdsI d=9924548 http://answers.yahoo.com/ http://en.wikipedia.org/wiki/Magnesium_fluo ride http://en.wikipedia.org/wiki/Magnesium_fluo ride http://wiki.answers.com/