Physical and chemical properties of zinc sulfide ZnS powder
The secretary general of the Organization of Petroleum Exporting Countries (OPEC) said recently that US economic sanctions against Venezuela have affected global energy supplies.
He told Venezuelan media that the ECONOMIC sanctions imposed by the United States on Venezuela and other countries have seriously affected the ability to produce and export oil worldwide and violated the right of people in other countries to use energy.
Venezuela has one of the largest proven crude oil reserves in the world, but U.S. sanctions have made it impossible for Venezuela’s oil industry to consistently export reliable energy to the world, he said. Despite this, he highly appreciated the efforts of the Venezuelan oil industry to maintain Zinc Sulfide ZnS, Zinc Sulfide ZnS Overview, Zinc Sulfide ZnS Application, Zinc Sulfide ZnS Supplier, Zinc Sulfide ZnS Price are expected to increase in the future.
Overview of Zinc Sulfide ZnS
Zinc sulfide is a white to off-white or light yellow powder, which becomes darker when exposed to light, stable in dry air, and gradually oxidized to zinc sulfate when stored for a long time in humid air or containing water. Soluble in dilute inorganic acid, soluble in alkali, insoluble in water. Relative density 3.98 (alpha type), (d25) 4.102 (beta type). irritating.
Physical and chemical properties of zinc sulfide ZnS powder
The chemical bond between Zn and S of zinc sulfide tends to be a covalent bond. The crystal has three different configurations: low temperature type, that is, sphalerite structure, abundant in nature, colorless cubic crystal, Zn, S coordination number is 4, relative density is 4.10. 1020 ℃ High temperature type; high temperature type, namely wurtzite structure, colorless hexagonal crystal, Zn, S coordination number is 4, relative density 3.98, melting point about 1700 ℃. High temperature stable structure of zinc sulfide; high pressure type, namely chloride In the sodium structure, the coordination number of Zn and S is 6, and the relative density is 5.21. There is also a water-based 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, insoluble in acetic acid, but soluble in low-concentration strong acids such as hydrochloric acid, releasing hydrogen sulfide. The solubility product of zinc sulfide is similar to the K1·K2 value of hydrosulfuric acid, so the following equilibrium exists in dilute acid:
It can be seen that in the strong acid zinc salt solution, the hydrogen sulfide gas cannot obtain zinc sulfide precipitation. Passing hydrogen sulfide gas into the zinc salt solution can get zinc sulfide precipitation, but the precipitation is not complete. Using ammonium sulfide solution as precipitating agent, the zinc ions in the zinc salt solution can be completely precipitated into zinc sulfide. Since the ammonium sulfide solution is alkaline, the acidity of the system can be reduced. In industry, the above method should be used to isolate the air. White zinc sulfide darkens when exposed to light, and is easily oxidized to zinc sulfate in the air. Zinc sulfide can be used alone as a white paint pigment or in combination with zinc oxide. Pure zinc sulfide does not emit light. If a trace amount of manganese, copper, and silver are added to the zinc sulfide crystal as an activator, it can emit different colors of fluorescence after being illuminated, called phosphor powder, which is used to make fluorescent screens and luminous paints. Zinc sulfide is also used in leather, enamel, rubber, dye and other industries.
Application of zinc sulfide ZnS
Zinc sulfide is often made from scrap and used for other purposes. Typical sources include smelters, slags, and pickling liquors. It is also a by-product of ammonia's methane synthesis, where zinc oxide is used to remove hydrogen sulfide impurities from natural gas.
High-purity crystalline zinc sulfide powder is an important basic material, which is widely used in civil, military, aerospace and other high-tech fields. It is also an extremely important window material for medium- and long-wave far-infrared precision guidance and far-infrared imaging, especially in the fields of national defense, military and other cutting-edge technologies. The applications of zinc sulfide are as follows: Luminescent material.
Zinc sulfide, with a small amount of a suitable activator, is highly phosphorescent and is currently used in a variety of applications from cathode ray tubes to X-ray screens to glow in dark products. When silver is used as the activator, the resulting color is bright blue with a maximum wavelength of 450 nm. The use of manganese produces a red-orange color around 590 nm. Copper glows for a long time and has the deep green glow we are familiar with. Copper-doped zinc sulfide ("ZnS+Cu") is also used in electroluminescent panels. It also exhibits phosphorescence due to impurities in blue or ultraviolet light.
Zinc sulfide is also used as an infrared optical material, which transmits from visible wavelengths to just over 12 microns. It can be used as the plane of an optical window or the shape of a lens. It is made of hydrogen sulfide gas and zinc vapor microchips and is sold as FLIR grade (forward looking infrared), in which zinc sulfide is creamy yellow and opaque. When hot isostatic pressing (HIPed), the material can be transformed into a transparent water form known as Cleartran (trademark), an early commercial form sold as Irtran-2, but this name is now obsolete.
Zinc sulfide is a common pigment sometimes called sachtolith. Zinc sulfide forms lithopone when combined with barium sulfate.
The fine ZnS powder is an efficient photocatalyst that generates hydrogen gas from water under illumination. Sulfur vacancies can be introduced into ZnS during the synthesis. This gradually turns the white to yellow ZnS into a brown powder and enhances the photocatalytic activity through enhanced light absorption.
Zinc sulfide ZnS price
The price of zinc sulfide and zinc sulfide products will vary randomly due to factors such as production costs, transportation costs, international conditions, exchange rates, and market supply and demand of zinc sulfide and zinc sulfide products. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for Zinc Sulfide ZnS products, please feel free to send an inquiry to get the latest Zinc Sulfide ZnS product prices.
Suppliers of Zinc Sulfide ZnS
As a global supplier of zinc sulfide ZnS products, Tanki New Materials Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineered materials. The company has successfully developed a series of powder materials (molybdenum disulfide, tungsten sulfide, bismuth sulfide, etc.) high-purity targets, functional ceramics and structural devices, and provides OEM services.
|Technical Parameter of Zinc Sulfide ZnS Powder :|
|Particle size||ZnS||Water||Fe,mg/kg||Cu,mg/kg||Pb, mg/kg||Ni, mg/kg||Cd,mg/kg||Mn, mg/kg||PH|
|Zinc Sulfide Properties|
|Other Names||ZnS powder, zinc sulphide, zinc sulfide phosphor|
|Appearance||White to off-white Powder|
|Melting Point||1830 °C|
|Solubility in H2O||N/A|
|Specific Heat||520 J/kg-K|
|Thermal Conductivity|| 27 W/m-K|
|Thermal Expansion||6.5 µm/m-K|
|Young's Modulus||75 GPa|
|Zinc Sulfide Health & Safety Information|
|Transport Information||NONH for all modes of transport|
China's non-manufacturing purchasing managers index for March was released by the China Federation of Logistics and Purchasing and the Service Industry Survey Center of the National Bureau of Statistics today. An index of business activity for the non-manufacturing sector as a whole fell below 50 percent.
China's non-manufacturing business activity index was 48.4%, down 3.2 percentage points from the previous month. The new orders index was 45.7 percent, down 1.9 percentage points from the previous month, indicating a significant slowdown in the growth of supply and demand in the non-manufacturing sector from the previous month. In terms of sectors, the business activity index and new order index of transportation, accommodation and catering, culture, sports and entertainment, and tourism-related industries all declined significantly from the previous month.
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