Material name Rock Salt (Sodium Chloride)
Composition NaCl
Chemical formula weight 58.44
System Cubic
Temperature (ºC) 25
a (Å), b (Å), c (Å) 5.640(8) 5.640(8) 5.640(8) @
α (deg), β (deg), γ (deg) 90 90 90 @
Unit cell volume (Å3) 179
Calculated density (g/p3) 2.17
Z 4
Space group Fm3m (No.225)
atom site g x/a y/b z/c B2)
Na 4a 1 0 0 0  -
Cl 4b 1 1/2 1/2 1/2  -
Comment The unit of lattice constants (a, b, and c) was converted from the x unit (xu) (reference data) to the angstrom (Å).

Reference: J.E. Nickels, M.A. Fineman, and W.E. Wallace, Journal of Physical Chemistry, 53, 625 (1949).