Iitems

property

MgF₂

Molecular Weight

67.31

Density

3.18 g/cm³  (18¡æ)

Crystal system and point group

Tetragonal  4mmm

Lattice Constant, Å

A=4.64 C=3.06

Cleave

[100] and [110] plane

Solubility

6.7mg/100g H₂O (18¡æ)

Melting Temperature, ¡æ

1255

Specific Heat

0.9200X10³ J/KgK

Thermal Expansion,1/K at 300 K

13.70 X 10^-6

Mohs hardness

6

Transparecy range

0.11 ¨C 7.5 ¦Ìm

Refractive Index

1,38359 at 404.7 nm; 1.37599  at 706.5 nm