Zinc sulfide (chemical: ZnS) is the sulfide of zinc, which is white to yellow powder or crystal, and is insoluble in water, mainly in the form of zinc-zinc ore and fibrous zinc ore.Both of these structures are wide - forbidden semiconductor materials and are widely used in optoelectronic devices.The spout structure is cubic crystal system, and the band width at 300K is 3.54 eV.The structure of fibrous zinc ore is 6 square, and the band width is 3.91 eV.Pure sphalerite will at 1020 ° C to wurtzite, but the existence of impurities will lower the temperature.The sulfur atoms are packed tightly in the spout and zinc deposit, which is packed tightly with the six sides.In both cases, the zinc atoms account for half of the tetrahedral space.Zinc sulfide can be passed into hydrogen sulfide in a solution containing Zn2 +, and the pH is controlled by 3.Zinc sulphide is also produced by single - mass chemical synthesis.Zinc sulfide is mainly used for pigments and fillers, and the mixture of zinc sulphide and barium sulfate is commonly known as zinc barium white or lide powder, which is a common white pigment, but has been replaced by titanium white powder.Zinc sulphide can also be used as a luminescent component of optical materials and phosphors.
Basic information error correction
Zinc sulfide, Zinc sulfide, Zinc sulphide, Zinc sulfide, Zinc sulfide, Zinc sulfide, Zinc sulfide, Zinc sulphide, Zinc sulfide, Zinc sulphide, Zinc sulphide, Zinc sulphideAny Zinc sulphide any Zinc (II) sulfide.Any Zinc Sulfide.Any ZINC SULFIDE.CAS number: 1314-98-3 molecular formula: SZn molecular weight: 97.44500 precision quality: 95.90120 PSA: 32.09000 LogP: 0.64570
Materialized property error correction
Appearance and properties: white to yellow powder, transparent yellow crystal density: 4.1 g/mL at 25 DHS C (lit) 31 melting point: 1700 DHS C stability: Stable. May react with water to difference toxic hydrogen sulfide, Incompatible with acids, strong oxidizing agents. The Air and moisture sensitive. The vapor pressure, 12600 MMHG at 25 ° C
Security information error correction
Symbol:
Hazard statement:
Additional hazard statement: exposure to acids releases toxic gases.
Customs code: 2830909000
WGK Germany: 3
Hazard type code: R31
Safety note: 50A
RTECS number: ZH5400000
Production methods and use see all
Production methods
1. Double decomposition method to add zinc sulfate solution in reactor, the double decomposition reaction in ammonium sulfide mix slowly, generate zinc sulfide and ammonium sulfate, and filtered to remove ammonium sulfate, evaporation and concentration, cooling crystallization, then through centrifugal separation, zinc sulfide was finished, the equation is as follows:
use
Use as analytical reagent, fluorescent body, photoconductor material.It is also used in the manufacture of dye, paint, pigment, glass and solidified oil.Used for various filters and laser window coatings. The fluorescence grade sulfide zinc powder is white to gray or light yellow powder, see light color becomes darker.When the dry air is stable, when the air is wet or when it contains water, it is oxidized to zinc sulfate.Soluble in dilute mineral acids, insoluble in water and alkaline solution, stimulating.Relative density of 3.98 (alpha), (d25)4.102 (beta).It is mainly used in color imaging tube, luminescent material base material, pigment, coating, plastic, rubber, friction materials and other fields.
High purity industrial zinc sulfide with high whiteness, high refraction coefficient crystallization, high wear resistance, high strength, good infrared transmittance, and insoluble in water and organic solvents, weak acid and weak base in chemical industry, ceramic, photoelectric, photocatalytic, infrared gas sensitive properties field widely used.A purity of 99% high purity industrial zinc sulfide or industrial production in the domestic blank, it is extremely important in the window of the long wave infrared precision guidance, infrared imaging materials, widely used in cutting-edge technology in the field of far infrared precision transmission hood, rockets, satellites, spacecraft, high power infrared laser, forward-looking infrared navigation hanging storehouse and aim at warehouse, ship infrared observation window, anti-counterfeiting, electronic information, luminescent materials, and other areas of the high and new technology.In addition, zinc sulphide has important applications in heavy metal ions (such as cadmium, lead, etc.) adsorption, plastic, coating production, color masterbatch production, abrasion materials and so on.Zinc sulphide has been used in children's toys, family planning and textile products.
With the development of science and technology, infrared technology in the fields of aerospace and precision-guided is widely used for infrared window material put forward higher requirements, adopt high purity industrial zinc sulfide as the material of vacuum hot pressing polycrystalline zinc sulfide is functional infrared transmission material, in the long wave infrared (7.5 ~ 10.5 um) band has a good infrared transmission performance, inside and outside is the material of choice for long wave infrared transmission Windows/hood, widely used in the infrared detection technology, especially the advanced navigation empty space, rockets, satellites, spacecraft, such as infrared precision guidance technology.
Compared with abroad, our country is still some way in the field of high-tech precision guidance technology, foreign advanced guidance technology adopts comprehensive guidance method, has the advantages of high accuracy and anti-interference, and infrared imaging guidance is one which will not lack of guidance methods.If the infrared guidance technology and materials do not meet the requirements, the accuracy and anti-interference ability will be severely affected.Our country compared with foreign developed countries in terms of precision-guided missiles is one of the reasons for the gap between large infrared guidance will prepare the raw material - zinc sulfide powder technical indicators can not meet the requirements of military use, at the same time foreign to our country in high purity vulcanized zinc powder and related products strict technology blockade and products import restrictions, lead to related technology research in the field of stagnation.
China (Mainland)
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