Zinc sulfide, white to pale white or light yellow powder, see dark light color, stable in dry air, long time in wet air or containing water, gradually oxidized to zinc sulfate, soluble in dilute inorganic acid, soluble in alkali, insoluble in water;Relative density 3.98(type), (d25)4.102(type), irritant.
Zinc sulfide crystals are polycrystalline with no change of coordination, and there are two kinds of structures: cubic zinc sulfide and hexagon zinc sulfide:
1. Crystal structure of cubic zinc sulfide: this structure is marked B3 internationally;It is a cubic crystal system with a surface centered cubic lattice type.Both Zn2+ and s2-isolated were tetrahedral, with four anions.This structure can also be regarded as the most compact stacking of S2-, Zn2+ filling the space of tetrahedron.Or, since the covalent bonds between zn-s account for a large proportion, its structure can be regarded as the C atom in the cubic diamond structure, which is alternately obtained by substituting Zn and S atoms.
2. Crystal structure of hexagonal zinc sulfide: this structure is marked as B4 internationally;It is a hexagonal crystal system with a simple hexagonal lattice pattern.Around the Zn2+ and s2-ions, there are four anions with tetrahedral arrangement.This structure can also be regarded as the most densely packed square of S2-, Zn2+ filling the space of tetrahedron.Related: zinc sulfide