high purity CAS 1314-98-3 zinc sulfide 99.99% 3-5um ZnS powder

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Overview of zinc sulfide

Zinc sulfide is a group II-VI compound semiconductor material composed of sulfur and zinc. The molecular formula is ZnS, the molecular weight is 97.45, the melting point is 1020°C (15MPa), the white crystal, the lattice constant is 0.547nm, the hexagonal crystal form, and the density is 4.08g/cm3. Almost insoluble in water, but soluble in acid. Long-term chemicalbook storage in humid air will convert to zinc sulfate. The forbidden band width is 3.6eV, which is the widest among II-VI compound semiconductor materials. Therefore, a blue light-emitting tube can be made. Powdered zinc sulfide is the most important electroluminescent material and light fluorescent material, and is used to prepare the fluorescent screen of the picture tube, the scoreboard display and so on. It is also a window material and coating material in infrared optical materials.

Physical and chemical properties of zinc sulfide

Zinc sulfide, chemical formula ZnS. The chemical bonds between Zn and S tend to be covalent bonds. The crystal has 3 different configurations: low temperature type, that is, sphalerite structure, which is abundant in nature, colorless cubic crystal, Zn, S coordination number is 4, relative density is 4.10, and it turns to high temperature type at 1020 °C;

High temperature type, namely wurtzite structure, colorless hexagonal crystal, Zn, S coordination number are 4, relative density is 3.98, melting point is about 1700 ℃, it is a high temperature stable structure of zinc sulfide;

High pressure type, namely sodium chloride structure, Zn and S coordination numbers are both 6, and the relative density is 5.21. There is also a water-containing compound ZnS·H2O, which is a white powder with a relative density of 3.98 and a melting point of 1049°C. Zinc sulfide is insoluble in water and dilute alkali, nor in acetic acid, but easily soluble in low-concentration strong acids such as hydrochloric acid, and releases hydrogen sulfide.

Application of Zinc Sulfide

Powdered zinc sulfide is the most important electroluminescent material and light fluorescent material, and is used to prepare the fluorescent screen of the picture tube, the scoreboard display and so on. It is also a window material and coating material in infrared optical materials.

Zinc sulfide (ZnS) is widely used in making infrared windows, fairings and infrared optical components. It has the characteristics of high purity, insoluble in water, moderate density and easy processing. Zinc sulfide (ZnS) has good refractive index uniformity and consistency, high transmittance in the mid-infrared band, and enhanced absorption and scattering with shorter wavelengths. Zinc sulfide (ZnS) has strong resistance to harsh environments, high hardness and twice the breaking strength of zinc selenide (ZnSe).

Tough front optics for zinc sulfide (ZnS) thermal imaging systems for the infrared window and thermal band (8 to 14 μm).

Zinc sulfide (ZnS) oxidizes significantly at 300 °C, shows plastic deformation at about 500 °C, and dissociates at about 700 °C. For safety reasons, zinc sulfide windows should not be used above 250°C in normal atmospheres.

Zinc sulfide is also used as an analytical reagent, a matrix for phosphors, and in the manufacture of dyes and curing oils.

Technical parmeters of zinc sulfide

Storage Condition of Zinc Sulfide ZnS Powder:
The damp reunion will affect ZnS powder dispersion performance and using effects, therefore, Zinc Sulfide ZnS powder should be sealed in vacuum packing and stored in a cool and dry room, the Zinc Sulfide ZnS powder can not be exposure to air. In addition, the Zinc Sulfide ZnS powder should be avoided under stress.

Packing & Shipping of Zinc Sulfide ZnS Powder:
We have many different kinds of packing which depend on the Zinc Sulfide ZnS powder quantity.
Zinc Sulfide ZnS powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Zinc Sulfide ZnS powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.

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Packaging of zinc sulfide powder:Vacuum packing, 1kg/bag, or as your request.
Shipping of zinc sulfide powder: ASAP 

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