Zinc Sulfide ZnS Product Structure
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The Biden administration plans to ease sanctions on Venezuelan oil to allow more of the country's crude to reach Europe.
The U.S. will allow European companies still operating in Venezuela to immediately transfer more oil to the continent, while allowing Chevron to negotiate a resumption of operations in Venezuela, according to people familiar with the matter. Venezuela's OPPOSITION, which is backed by the United States, is understood to favor the move. Tight global oil supplies have sent crude and fuel costs soaring, threatening to add to already high inflation. Increasing Venezuelan crude exports would help ease supply constraints while also helping to reduce Europe's dependence on Russian energy.
The US has sought to encourage talks between the Venezuelan government and the US-backed opposition to open the way to free and fair elections by extending a limited license held by Chevron to allow the oil company to maintain its operations in Venezuela and negotiate future operations.
The United States reportedly did not extend a permit to Allow Chevron to drill and sell Venezuelan crude, as the company had hoped.
The license extension will allow Chevron to negotiate with State-run Petroleos de Venezuela SA, with which it has a joint venture. Previously, the company could not directly negotiate with any officials sanctioned by the United States. Chevron has been lobbying the United States to allow it to drill for Venezuelan crude and sell it on world markets to help lower energy prices amid the Russia-Ukraine war.
Affected by the ever-changing international situation, the supply and prices of many commodities like the Zinc Sulfide ZnS Products,Overview of Zinc Sulfide ZnS Products,Application of Zinc Sulfide ZnS Products,Zinc sulfide ZnS product price,Supplier of Zinc Sulfide ZnS Products are still very uncertain.
Overview of Zinc Sulfide ZnS Products
Zinc sulfide ZnS is an inorganic compound with the chemical formula ZnS. Zinc sulfide is white to pale yellow or pale yellow powder. It gets darker when exposed to light. Stable in dry air, gradually oxidized to zinc sulfate in humid air or when it contains moisture. Soluble in dilute inorganic acid, soluble in alkali, insoluble in water.
Zinc sulfide ZnS, exists in two main crystal types, and this duality is often a prominent example of a polymorphic type. In each form, the coordination geometry of Zn and S is tetrahedral. The more stable cubic form is also known as sphalerite. The hexagonal form is known as the mineral wurtzite, although it can also be produced synthetically. The transformation from sphalerite to wurtzite occurs at approximately 1020°C. Tetragonal is also known as a very rare mineral known as Lithium Manganese Ore with the molecular formula (Zn, Hg)S.
Application of Zinc Sulfide ZnS Products
Zinc sulfide ZnS is mainly used in paints and plastics in chemical production. Due to its white opacity, it is insoluble in water, organic solvents, weak acids and weak bases and becomes an important pigment in paints. Zinc sulfide is now the second most important pigment in the United States after titanium dioxide, but continues to play an important role in European industry.
As a bulk material, the melting point of zinc sulfide ZnS is 1650 ℃, the Mohs hardness of 98% commercial grade zinc sulfide is 3.0, and the refractive index is 2.37. Due to its high index of refraction and abrasion resistance, zinc sulfide ZnS pigments, wax paper and metal plates coated with very thin layers in the device have high hiding power.
Zinc sulfide ZnS is easy to disperse and not easy to agglomerate. It is neutral white with good optical properties. Commonly used as a component of thermosets, thermoplastics, reinforced glass fibers, flame retardants, elastomers and dispersants.
Zinc sulfide with a suitable activator added in small amounts of PPM has a strong phosphorescence (described by Nikola Tesla in 1893) and is currently used in many applications, from cathode ray tubes to X-ray screens to glow-in-the-dark products. When silver is used as the activator, the resulting color is bright blue with a maximum size of 450 nanometers. The use of manganese produces an orange-red color around 590 nanometers. The copper glowed for a long time, glowing with a familiar green glow. Copper-doped zinc sulfide ("ZnS plus Cu") is also used in electroluminescent panels. It also exhibits phosphorescence due to impurities exposed to blue or ultraviolet light.
Zinc sulfide is also used as an infrared optical material, transmitting from visible wavelengths to just above 12 microns. It can be used flat as an optical window or molded into a lens. It is made by synthesizing hydrogen sulfide gas and zinc vapor on a microchip, and is sold as FLIR grade (forward looking infrared), with zinc sulfide in a cream-yellow, opaque form. This material can be converted into a transparent form called Cleartran (trademark) under hot isostatic pressing (HIPed). An early commercial form was marketed as IRTRAN-2, but that name is now obsolete.
Zinc sulfide is a common pigment sometimes called Sachtolith. Zinc sulfide combines with barium sulfate to form lithopone.
Fine ZnS powder is an efficient photocatalyst to generate hydrogen from water under illumination. Sulfur vacancies were introduced in the synthesis of zinc sulfide. This gradually turns the white-yellow ZnS into a brown powder and enhances the photocatalytic activity by enhancing light absorption.
Both sphalerite and wurtzite are intrinsically wide-bandgap semiconductors. These are typical II-VI semiconductors, using structures associated with many other semiconductors, such as gallium arsenide. The band gap of the cubic form of ZnS is about 3.54 EV at 300 Kelvin, but the band gap of the hexagonal form is about 3.91 EV. ZnS can be doped as an n-type or p-type semiconductor.
Zinc sulfide ZnS product price
The price of zinc sulfide ZnS 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 ZnS 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.
Supplier of Zinc Sulfide ZnS Products
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.
|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|
The coronavirus (COVID-19) pandemic not only had a significant impact on public health, it also severely affected one of the linchpins of the global economy – the tourism industry. As many countries introduced curfews and travel restrictions to contain the spread of the virus, travel across the world significantly declined from early 2020 onwards. The financial repercussions of the coronavirus have already begun to manifest themselves within the tourism industry. In 2020, global revenue from the travel and tourism industry was estimated to drop from a forecasted 711.94 billion U.S. dollars to 568.6 billion U.S. dollars, representing a decrease of over 20 percent. The region predicted to see the highest decline in revenue was Europe, decreasing from 211.97 billion U.S. dollars in 2019 to roughly 124 billion U.S. dollars in 2020.
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