Tin Telluride SnTe Powder Cas 12040-02-7

About Tin telluride SnTe powder:
Tin Telluride, IV-VI compound semiconductor material, is compounded from IVA element Sn and VIA element TE. The molecular formula is SNTE. The banned bandwidth is 0.60 eV, which is a direct transmitting type.
 
Tin Telluride is a semiconductor compound. Sodium chloride structure, ionic crystals, have a certain covalent bond component. Density 6.48g / cm3, melting 780 degrees Celsius. It is prepared by a straight pull method and an epitaxial method for making an infrared detector.
 
Tin Telluride is usually alloyed to make the lead tiny lisuride, which is used as infrared detector material. Tin Telluride typically forms a p-type semiconductor (external semiconductor) due to tin air space and is a low-temperature superconductor.
 
Tin Telluride exists in three crystal stages. At low temperatures, the concentration of the aperture carrier is less than 1.5 × 10 20 cm-3, which is also referred to as the α-SNET in the diamond phase. At room temperature and atmospheric pressure, tin TELLURIDE is present in the NaCl samples, called β-SNE. Although the β-SNTE is converted to γ-SNTE, γ-SNTE, orthogonal phase, and spatial group PNMA. The phase change is characterized by an increase of 11% and the resistance of the γ-SNET increases by 360%. Teti is a thermoelectric material. Theoretical research means that n-type performance may be particularly good. Feel free to send an inquiry to get the latest price if you would like to buy Tin telluride SnTe powder in bulk.

Features of Tin telluride SnTe powder :

Steady at room temperature and pressure. Avoid light, open flame, high temperature. Do not dissolve in water, with semiconductor properties

 

Specification of Tin telluride SnTe powder :

Item

Purity

APS

Color

Shape

Density (g/mL, 25 ℃)

Melting Point

Crystal Structure

Tr-SnTe

99.99%-99.9999%

100mesh

Gray cubic crystal

powder,granule

Block

6.5

790°C

Cubic

Note: according to user requirements can provide different size products.

 

How is Tin telluride SnTe powder produced?
1. Weigh the high-pure tin and ruthenium of the chemical measurement ratio, put into a clean quartz ampoule, seal under high vacuum (about 10-5 Pa). The ampoule was placed in a cold furnace, slowly warming (about 50 ° C / h) to 435 ° C, heating 72 h. Turn off the furnace, so that the ampoule is slowly cooled, cold until at room temperature, resulting in high purity SnTe.
2. Weigh the high-pure tin and ruthenium of the chemical measurement ratio, put into a clean quartz ampoule, seal under high vacuum (about 10-5 Pa). The ampoule was placed in a cold furnace, rapidly warming (about 200 ° C / h) of 810 ° C, and heated for 5 h. Start cooling, the ampoule is slowly cooled (about 50 ° C / h), cold to room temperature for nearly 15 hours to obtain high purity SnTe.
3. Use 1 L of the three-neck round bottom flask as the electrolytic cell, the cathode is 5 mm in diameter, 7cm long 7 cm, purity, 99.99% semiconductor material level, the anode is a bottle of the cylindrical high purity tin, the electrode is inserted into the flask. The metal and glass should be sealed. The middle bottle port is used to add and connect the mechanical vacuum pump for exhaust gas. The magnetic stirrer in the bottle is placed in the botulfluoroethylene is stirred during electrolysis. The electrolyte is an NH4AC-HAC buffer solution (add 500 ml of 1 mol / L ammonia to a pH to a pH of 4.5.). The flask of the electrode and the electrolyte should be a vacuum, and the magnetic force is stirred for 30 min to degenerate, determine the high vacuum, start electrolysis. The anode is generated in the anode to generate SnTe precipitation in a solution of Sn2 +, cathode peers.
4. Also added in the electrolyte can also be added to the anode, and the metal salt solution (such as chloride) is added dropwise, and the experiment is carried out in 101.325 kPa pure argon with platinum.
In order to promote precipitation condense, the precipitate in the electrolyte is boiled in an argon atmosphere. In order to prevent oxidation, do not allow crystallization to be exposed to air until the crystal is exposed to air, washing crystals, centrifugation, and dried in an argon flow at 120 ° C for 4 h.

Application of Tin telluride SnTe Powder:
High purity inorganics, widely used in electronics, display, solar cell, crystal growth, functional ceramics, batteries, LED, thin-film growth, catalyst, etc.

Packing & Shipping of Tin telluride SnTe powder :
We have many different kinds of packing which depend on the Tin telluride SnTe powder quantity.
Tin telluride SnTe powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Tin telluride SnTe powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.
Tin Telluride SnTe Powder Cas 12040-02-7插图

Tin Telluride SnTe Powder Properties

Other NamesTin Telluride, SnTe Powder, Cas 12040-02-7, Tellanylidenestannane,
Tellanylidenetin, Tin(II) Telluride
CAS No.12040-02-7
Compound FormulaSnTe
Molecular Weight246.31
Appearancegrey crystalline solid
Melting Point790 °C (1454 °F)
Solubility in waterN/A
Density6500 kg m3
Purity99.99%
Particle Size-80mesh, -100mesh
Boling pointN/A
Specific HeatN/A
Thermal ConductivityN/A
Thermal ExpansionN/A
Young’s ModulusN/A
Exact Mass251.824 g/mol
Monoisotopic Mass253.839722 Da
  
  

Tin Telluride SnTe Powder Health & Safety Information

Safety WarningN/A
Hazard StatementsN/A
Flashing pointN/A
Hazard CodesN/A
Risk CodesN/A
Safety StatementsN/A
RTECS NumberN/A
Transport InformationN/A
WGK GermanyN/A
Inquiry us

About Tin telluride SnTe powder:Tin Telluride, IV-VI compound semiconductor material, is compounded from IVA element Sn and VIA element TE. The molecular formula is SNTE. The […]

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Boron nitride and its development history

What is boron-nitride? Boron Nitride is a crystal made of nitrogen atoms, boron atoms. The chemical composition of Boron nitride is 43.6% Boron and 56.4% Nitrogen. There are four types: hexagonal boron Nitride, rhombohedral Borion Nitride (RBN), cubic boren nitride [CBN], and wurtzite Boron (WBN).
The development of boron-nitride
Boron nitride More than 100 years have passed since its invention. It was used in high-temperature lubricants as a hexagonal boron nutride. Its structure, as well as its properties, are very similar to graphite. This is why it is also commonly known by the name white graphite.
Boron Nitride (BN) ceramics was first discovered in 1842. Since the Second World War, a lot has been done abroad on BN materials. It was not developed until 1955, after the hot pressing process was perfected. American Diamond Company, Union Carbon Company, and more than 10 tons were produced by them in 1960.
R*H*Wentrof produced CBN in 1957. General Electric Company, which sold Borazon as a product in 1969, was the first to successfully produce CBN. In 1973, the United States launched the production of CBN-tools.
Japan imported technology and CBN tools from the United States in 1975.
In 1979, the first successful use of the pulsed plasma technology to prepare a c-BN film collapsed at low temperature and pressure was made.
To prepare cBN films, people were able use several methods of chemical vapor deposit (CVD), as well as physical vapor dposition (PVD), at the end the 1990s.
China sees development as a leap and bound. The initial research on BN powder started in 1963. It was then developed successfully in 1966. It was finally put into production by 1967.

The chemical and physical properties boron nitride
Physical properties
CBN crystals are usually dark brown or red with a zinc mix structure and good thermal conductivity. CBN is hardier than diamond and is used in a variety of applications, including as abrasives and tool materials.
Boron Nitride is chemically inert and can be corroded by water and organic acids. The hot concentrated alkali breaks the boron/nitrogen bond. Above 1200 it will begin to oxidize. It starts to decompose around 2700°C in a vacuum. It is slightly soluable in hot acid but insoluble when dissolved in cold water. Its relative density is 2.29. The compressive strength is 170MPa. The maximum operating temperature in an oxidizing environment is 900°C, while it can reach 2800°C under an inactive reducing atmosphere. However, the lubrication performance at room temperature is poor. The majority of the properties of Boron Nitride are superior to those of carbon materials. Hexagonal Boron Nitride has a low friction coefficient and good high-temperature stability. It also has high strength, high thermal conductivity and low expansion coefficient. It can also resist corrosion.
Material structure
Hexagonal graphite nitride crystals are the most popular. There are also amorphous forms. In addition to hexagonal crystal forms, boron nuitride also has other crystal forms such as cubic rhombohedral and boron Nitride (r-BN), Boron nitride (c-BN), wurtzite type boron nitride (w-BN). Even graphene-like two-dimensional boron nutride crystals were discovered by people.
Boron Nitride is used
1. Metal forming mold release agents and metal wire drawing fluid.
2. Special electrolytic and resistant materials for high temperatures
3. High-temperature solid oil lubricants, extrusion-anti-wear additives. Additives for the production ceramic composite materials. Anti-oxidation additives. Especially suitable for situations that resist corrosion of molten metallics.
4. Heat-sealing desiccant to be used in transistors and as an additive for polymers, such as plastic resins.
5. Pressed into a variety of boron Nitride products. They can be used for insulation and heat dissipation purposes.
6. Aerospace thermal shielding materials
7. After high temperature and pressure treatment, the catalyst can convert it into cubic boron nutride with diamond-like hardness.
8. The structural materials used in the atomic bomb.
9. Rocket engines and planes require nozzles.
10. Insulator for plasma arc, high-voltage and frequency electricity
11. Packaging materials that prevent neutron radiation
12. Boron nitride is a superhard material that can be turned into drill bits and high-speed cutters for drilling oil wells.
13. It is used in metallurgy to make the isolating circle of continuous cast steel, the laundering of amorphous metal, and the release agent for continuous-cast aluminum (various optical glasses release agents).
14. Production of evaporation vessels for aluminum plating, including various capacitor films and aluminum plating, of picture tubes, of displays.
15. All kinds of aluminum-plated fresh-keeping packaging bags,
16. All types of laser anti-counterfeiting aluminiu plating, brand heat stamping materials and all kinds of cigarette, beer, and packaging boxes, including cigarette packaging box, etc.
17. Lipstick filler in cosmetics is safe, non-toxic and shiny.

(aka. Technology Co. Ltd. (aka. Our Boron Nitride has high purity, fine particle sizes, and low levels of impurity. Please Please contact us if necessary.

What is boron-nitride? Boron Nitride is a crystal made of nitrogen atoms, boron atoms. The chemical composition of Boron nitride is 43.6% Boron and 56.4% […]

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The Naming Method of Graphene

Graphene Graphene a material where carbon atoms are tightly packed into a single layer, two-dimensional honeycomb lattice. Graphene exhibits excellent optical, mechanical, and electrical properties. This material has great potential for applications in materials science and micro-nano processes, energy, biomedicine and drug delivery. It is expected to be a breakthrough material in the near future.
To regulate the growth of the graphene industry, it is important to have a better understanding of graphene. China Graphene Standards Committee reviewed single, double, few-layer graphene and single-layer oxide graphene in 2014. There are many concepts like reduced graphene dioxide, functionalized graphene and graphene material.

The material’s electronic energy band structure has reached its 3-dimensional limit at 10 graphene layers. This means that the graphene standard defines graphene as being within 10 layers. A single-layer graphene is a two-dimensional material made of carbon atoms that are arranged closely in a hexagonal honeycomb structure.

Two-layer grapheneconsists of two layers carbon atoms that are frequently and closely packed into a benzene ring structural (that’s, a hexagonal honeycomb construction) and are composed with different stacking techniques (including AB stacking or AA stacking etc.). Dimensional carbon materials.

A few-layer grapheneis a 2-dimensional carbon that’s composed of 3-10 layers each of carbon atoms. It is packed in a benzene ring structure, (hexagonal Honeycomb structure), in various stacking methods, including ABC stacking (ABA stacking), etc. Material.

Single-layer Grapheneoxide – A two-dimensional carbon material that has oxygen-containing functional chains attached to the surface or boundary of a one-layer graphene. Grapheneoxide is a carbon material that has oxygen-containing functional links attached to the surface and boundary at least one graphene carbon atom layer. Graphene dioxide includes the previously mentioned single-layer grapheneoxid.

Single layer reduced graphene oxygen refers to two-dimensional carbon materials obtained by deoxidizing single-layer graphene dioxide by incomplete removal (groups), of oxygen-containing functional units (groups), by chemical, electrochemical, heat or other treatment methods.

A two-dimensional carbon substance called reduced grapheneoxide refers to graphene oxide. It is obtained by chemical, electrochemical or heat treatment of graphene oxide’s oxygen-containing functional group (groups). One-layer reduced grapheneoxide is included in the reduction of graphene.

Functionalized graphene is a kind of graphene that contains heteroatoms/molecules (such as hydrogen, fluorine, oxygen-containing groups and other surface modification to form bonds, nitrogen, boron and other elements substitution doping, heteroatom/molecule intercalation) Etc.) Two-dimensional carbon material. Functionalized graphene can be either the grapheneoxid described above or reduced grapheneoxid.

This definition includes single-layer graphene as well as double-layer and few-layer versions of graphene. Both can be called graphene material.

Few Layer Graphene Supplier
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Graphene Graphene a material where carbon atoms are tightly packed into a single layer, two-dimensional honeycomb lattice. Graphene exhibits excellent optical, mechanical, and electrical properties. […]

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Quartz Powder Uses

quartz powder uses include the creation of paint, adhesives, putty and rubber. It is also used in the smelting process and as flux in the metal casting industry. It is also used in the manufacturing of cell phones, watches and clocks as well as lasers.

It is a crystalline silicate mineral that contains silicon and oxygen atoms. It is one of the most common minerals in the earth’s crust. It is found in igneous, sedimentary and metamorphic rocks.

The mineral’s crystalline structure makes it extremely hard and strong. It can withstand high temperatures, pressure, and chemicals. It is also a good insulator.

A number of natural abrasives use silica as a major ingredient. It is an essential abrasive material in sanding, grinding and polishing of various metals and other materials.

It is an essential component in the production of glass and other mineral products such as synthetic rubber and plastics. It is used to improve the strength, insulation and smoothness of these products.

Quartz powder is a natural mineral with excellent physical and chemical properties. It is resistant to oxidation, alkali and acid, and is suitable for the synthesis of ceramics, paints and pharmaceuticals.

It is also known as silicon accepts powder and quartz fume. It is a natural crystalline silicate mineral that contains silicon and Oxygen atoms. It is one of the hardest minerals on earth. It can withstand high temperatures, pressure, chemicals, and is also a good insulator.

quartz powder uses include the creation of paint, adhesives, putty and rubber. It is also used in the smelting process and as flux in the […]

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The Applications of Ti3AlC2 Powder

Overview Ti3AlC2 powder
It not only has the same electrical and thermal conductivity as metal, but also has high elastic modulus and excellent high temperature mechanical properties similar to ceramics.It also has good thermal vibration resistance,anti-destructive ability and excellent chemical corrosion resistance.
Titanium aluminum carbide Ti3AlC2 Max
What are the potential uses of Ti3AlC2 Pulver?
The Al can diffuse rapidly in the TiAl-C MAX phase and undergo selective oxidation. This results in a dense Al2O3 coating that protects the matrix material from further oxidation. The high temperature self-healing capability of the system material is due to the microstructure of the interface between titanium aluminiu carbide (Ti3AlC2and Ti2AlC2)and the formed Al2O3. High temperature environments can cause cracks or nicks to form on the material’s surface. The oxide fills these cracks so that the material can regain its original properties, particularly its mechanical properties. This property is important for maintaining the mechanical properties of a material and increasing its stability and reliability, making it more likely that it can be used in high temperature environments.
Titanium aluminum carbide(Ti3AlC2 and Ti2AlC)has the characteristics of rapid Al diffusion and selective oxidation at high temperature,respectively,to realize the butt welding of the material itself and the welding between layers.The fracture toughness of self-welded layered materials of titanium aluminum carbide(Ti3AlC2 and Ti2AlC)has been greatly improved compared with single-phase materials.
MAX phase products,especially titanium silicon carbide(Ti3SiC2),have a series of characteristics such as high damage tolerance,good mechanical and thermal properties,making it possible to be used in fourth-generation nuclear reactors as nuclear fuel in gas-cooled fast reactors The cladding material.In recent years, the ability of titanium silicon carbide(Ti3SiC2)to resist radiation damage has attracted more and more attention.
Titanium aluminum carbide powder is widely used in the largest special ceramic materials,electronic materials,high-temperature structural materials,electrode brush materials, chemical anti-corrosion materials and high-temperature heating materials.
The electrical and thermal conductivity of titanium aluminum carbide, Ti3AlC2, is the same as that of other metals. However, it also has excellent high-temperature mechanical properties and a high elastic modulus. It has excellent heat resistance, vibration resistance and destruction resistance.
Due to the unique nano-layer crystal structure, this type of titanium aluminum carbide ceramic material (Ti3AlC2)has the characteristics of oxidation resistance, self-lubrication,high fracture toughness and conductivity at room temperature.
Titanium aluminum carbonide (Ti3AlC2) is widely used in high-temperature structures, electrode brush materials, chemical chemicals anti-corrosion material, and high temperature heating elements.
You can also use titanium aluminum carbide (Ti3AlC2) in high temperature coatings.
Aluminum titanium carbide, a multifunctional ceramic material, can be used as a precursor for nanomaterials and MXenes.
The main supplier of Ti3AlC2 powder
Tech Co., Ltd. () is a professional MAX Over 12 years’ experience in chemical product development and research. We accept credit cards, T/T and West Union payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
You can find high-quality powdered boron carbide here Please contact us Send an inquiry

Overview Ti3AlC2 powder It not only has the same electrical and thermal conductivity as metal, but also has high elastic modulus and excellent high temperature […]

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What is Boron Nitride? Is Boron Nitride Hard?

What is Boron Netride? Boron nitride It is a heat and chemical-resistant refractory mixture of boron, nitrogen with the chemical name BN.

What is Boron Nitride’s chemical characteristic?
The empirical formula to make boron-nitride (BN), is deceiving. BN is very different to other diatomic molecules, such as hydrogen chloride and carbon monoxide. Contrary to popular belief, BN has a lot of similarities to carbon. The representation of carbon as a single element C is also misleading.

Is Boron Nitride (BN) Hard?
Like carbon, BN can take many forms. The most stable structure is BN. hBN Has the same hexagonal structure and softness as graphite. You can also make hBN in graphene-like sheets, which can form nanotubes.


Cubic boron nitride, (cBN), is electronically similar to diamond. It is not difficult to make, but it is thermally and chemically more stable. It is also much easier to make. It is not as hard to make as diamond. An amorphous version (aBN) is also available, which is the same as amorphous carb (see below).

BN is primarily a synthesized material. However, reports have indicated that there may be naturally occurring deposits. The first attempts to make pure BN date back to the early 20th Century, however, it has only been possible to commercially produce acceptable forms in the last 70 years. The 1958 patent from Carborundum Company (Lewiston), New York, shows how a scientist prepared BN by heating boric acids (H3BO3) with metal salts oxyacids such as phosphate in the presence ammonia. The molded shape. Then, mix it up and shape it.

Similar methods are being used today. They use diboron trioxide, H3BO3, or B2O3 as their nitrogen source, and either ammonia, urea, or both. Each synthesis method produces a somewhat impure amount of aBN. The aBN is then purified and converted to hBN by heating at temperatures higher than that used for the synthesis. Similar to the preparation of synthetic diamonds, hBN is also converted into cBN using high pressure and high temperatures.

Boron Nitride applications
Boron Nitride can be used extensively in modern industries.
Lubricant
Hexagonalboron nitride can be used as a lubricant in paint, cosmetics pencil lead, dental cement, and other products. Its lubricating capabilities can still play a part in vacuum systems even if there aren’t any gas or water molecules within the compound layer.

BN has a significantly higher chemical stability and conductivity than graphite.

Equipment under high-temperature environment
The compound’s exceptional heat resistance makes it suitable for applications that involve extremely high temperatures. Hexagonalboron nitride can be used to improve the lubricating characteristics of rubber, plastics alloys, ceramics, and ceramics.

Plastics may benefit from lower thermal expansion by including BN components. It can also be integrated in semiconductor substrates or microwave oven windows.

Boron Nitride is a good ingredient in reaction vessels, crucibles and other applications due to its thermochemical capabilities.

Semiconductor Industry
The bandgap ranges between 4.5 and 6.4 eV for boron-nitride, making it an excellent widebandgap semiconductor material. Its thermal and dielectric qualities make it an ideal substrate for the development and fabrication of metal oxide field-effect transistors and semiconductors.

Grinding and cutting tools
Because of its physical properties, cubic boron is a polymorph that can be used to abrase nickel, iron, and other alloys. It’s also suitable for use in situations not suitable for diamonds, such as extremely high temperatures. Its cubic form of boron nitride is used in grinding and cutting tools.

Boron Nitride price
Boron Nitride’s price can vary depending on weather, market conditions, transport costs, and so forth. Typically, 1.5lbs of Boron Nitride cost more than $69 You can contact us to obtain the most recent price of Boron Nitride. We will send you a pricelist for boron nutride according to your requirements.
Boron Nitride Supplier
(aka. Technology Co. Ltd. (aka. boron nitride Manufacturer and supplier with more than 12 years’ experience in super high-quality Boron Nitride. Send us an email, or click on one of the products to send an inquiry.

What is Boron Netride? Boron nitride It is a heat and chemical-resistant refractory mixture of boron, nitrogen with the chemical name BN. What is Boron […]

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Ferro Tungsten

ferro tungsten, a specialized alloy of iron and tungsten, is commonly used as an additive in steel melts. Its high melting point, low vapor pressure and superior tensile strength make it useful for aerospace functions and welding. It is also a good conductor of electricity, and thus, has found use in electron microscopes, IC chips and other electrical applications.

Introduction: Tungsten is a heavy metal, with a very high melting point (3422°C/6192°F), low vapor pressure and very high thermal creep resistance. It is also a very tough metal, highly resistant to corrosion and can be attacked only by mineral acids.

Tungsten is widely available in the earth and can be extracted from a variety of minerals, including wolframite, scheelite, ferberite and hubnerite. The tungsten trioxide in these compounds can be reduced either carbothermically by electric arc furnaces, or metallothermically by silicon and/or aluminum.

Methods for Smelting Tungsten

The smelting of ferro tungsten is carried out by a special-purpose three-phase electric arc furnace. The smelting process consists of the following steps: preheating, adding calcioschellite preparation concentrate, refining, digging, adding pitch coke, leaning slag, deslagging and cooling the product and packaging, etc.

Formulation of Furnace Burden:

The furnace burden is made up of 70 to 80 percent of white tungsten concentrate, 4% to 9% of FeO, 3% to 7% of SiO2, 4% to 9% of FeSi and 1% to 5% of Fe. The components are fully and uniformly mixed.

ferro tungsten, a specialized alloy of iron and tungsten, is commonly used as an additive in steel melts. Its high melting point, low vapor pressure […]

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What is Bismuth Sulfide Powder?

What is it? Bismuth Sulfide Pulver ? Bismuth sulfide, a brownish-yellow powder and crystal, has a specific gravity of 7.39. It can be broken down at 685°C. It is insoluble and ethylacetate in water, but is soluble and dissolves in hydrochloric acid and nitric acid.
The key features of Bismuth Sulfide powder
Bi2S3’s unique layered structure, and weak bonds among layered units, leads to anisotropy in Bi2S3’s growth and the growth nuclei into small flake-like crystals through solvothermal and/or hydrothermal synthesis. At relatively low temperatures, crystal growth rates of reactants are faster than nucleation rates, which favors growth of bi2S3 nanoflakes in solvents that have high viscosity or high surface tension. Powders made in high viscosity, high surface tension solvents distilled and distilled-ethylene glycol (2 to 1) favored the formation nanoflake structures. Bi2S3 and solvents DMF have relatively low surface tension energy, viscosity, and viscosity. This helps to increase the chemical force between SBi bonds in the chains. According to the PBC theory, crystal growth of Bi2S3 crystals occurs along the maximum force. Bi2S3 nanorods are formed in the direction of strong bond chains, which has the fastest growth rate.
Bismuth Sulfide Properties
Other Titles dibismuth trisulphide, bismuch(3+) sulfide (2:3), Bi2S3 powder
No. 1345-07-9
Combination Formula Bi2S3
Molecular Weight 514.16
Appearance Dark-brown Powder
Melting Point 775
Boiling Point N/A
Density 6.78 g/cm3
Solubility of H2O N/A
Exact 513.876978
Bismuth Salt Sulfide Bi2S3 Pulp CAS 1345-07-9
Bismuth sulfide powder uses
Bismuth Sulfide, an important semiconductor material has potential applications as a thermoelectric, electronic, and optoelectronic device and infrared. Bismuth sulfide’s band gap energy at room temperature is 1.33eV. This is useful for making photoelectric converters, and it is used extensively in thermoelectric cooling processes. Nanoscale bismuth-sulfide can blue-shift the ultraviolet visible absorption wavelengths and fluorescence emission wavelengths. It also produces The nonlinear optic response, which enhances nanoparticles’ redox abilities and provides excellent photoelectric catalyst performance. It is a versatile material with many potential applications in luminescent, nonlinear, and photocatalytic materials.
The supplier Bismuth Sulfide powder
Tech Co., Ltd. () is a professional sulfide powder Over 12 years’ experience in chemical products development and research. We accept credit cards, T/T and West Union payments. We will ship goods overseas via FedEx, DHL and by air or sea to our customers.
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What is it? Bismuth Sulfide Pulver ? Bismuth sulfide, a brownish-yellow powder and crystal, has a specific gravity of 7.39. It can be broken down […]

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Potassium Oleate CAS 143-18-0

Product name: Potassium Oleate

CAS NO. 143-18-0

About Potassium Oleate:
Potassium oleate, another name is Potassium cis-9-octadecenoate. The chemical formula is C18H33KO2. Potassium oleate is a brown solid or a transparent amber liquid. It is fatty acid potassium found in natural soaps.

Potassium Oleate is a liquid potassium soap solution in water. Potassium Oleate is used as an emulsifier in many liquid soaps, facial cleansers, mustache waxes, body washes and hair permanents. Emulsifiers act like surfactants and reduce the surface tension of a liquid.

Potassium Oleate is a natural constituent of vegetable oils like sunflower oil. It is used in soapmaking to make vegetable glycerin soaps. In its pure form, it can be an irritant, however, in soap making it is reduced down and is approved as food safe when it is used as a binding ingredient.

High-purity potassium oleate is a powdery solid, which will bring great convenience in storage, packaging and transportation, or in the amount of use during use. However, the current refining and purification of solid potassium oleate often require the use of low temperature and decompression to remove water. This method has a long production cycle, high energy consumption, high cost, and difficult preparation. Therefore, it is very necessary to research and develop the solid potassium oleate preparation process. Tungstenmolybdenummetals is a trusted global Potassium Oleate supplier. Feel free to send an inquiry about the latest price of Potassium Oleate at any time.


If you want to know potassium oleate price and buy potassium oleate, please send inquiry to sales1@rboschco.com


How is Potassium Oleate produced?
A preparation method of solid powdered potassium oleate, the specific steps are:
1) The paste oleic acid and potassium hydroxide are reacted in the water phase to prepare a potassium oleate solution with a mass content of 10%-20%, and the mass content is 40% by the concentration at 70-80℃ -60% Potassium oleate in flowable viscous form;

2) After mixing the urea with the alcohol solution, stir at 70-90°C, and form a hot saturated urea-alcohol solution after the area is completely dissolved;

3) Add the viscous potassium oleate to the urea-alcohol solution under the heat preservation state, stir thoroughly to form a uniform and transparent solution, keep stirring, cool the solution to -5-0℃, keep the low temperature for 1-3h to make the potassium oleate solid precipitate, Filter the precipitated hard potassium oleate powder (filter with gauze), and dry the solid with dry cold air to obtain the finished solid powdered potassium oleate.


Application of Potassium Oleate:

Potassium oleate is a potassium catalyst and a trimerization catalyst for polyurethane rigid polyisocyanurate. potassium oleate uses in soap, means potassium oleate soap. It is widely used in polyurethane insulation board PIR foam system. In addition, potassium oleate is also widely used in rubber emulsifiers, foaming agents, release agents, detergents, lubricants, fiber softeners and surfactants. Potassium Oleate is used as an emulsifier in many liquid soaps, facial cleansers, mustache waxes, body washes and hair permanents. Emulsifiers act like surfactants and reduce the surface tension of a liquid. Potassium Oleate prevents the ingredients in these products from separating into separate chemicals.

In addition, potassium oleate can also

Preparation of an antifungal agent for paint;

Preparation of multifunctional microemulsified gasoline and Oil combustion accelerator;

Preparation of anionic viscoelastic surfactant-based gel.

 

Technical Data of Potassium Oleate:

Testing item

Testing standard

appearance

white or light yellow powder

acid value

195-204

iodine value

80-100

free alkali, %

0.1~1.0

loss on drying, %

≤3.0

content(in dry), %

≥99.0

water solubility test , 10%

qualified

ethyl alcohol solubility test , 5%

qualified

 

Packing & Shipping of Potassium Oleate:
We have many different kinds of packing which depends on the potassium oleate quantity.
Potassium oleate packing: 25kg/bag, or as your request.
Potassium oleate shipping: could be shipped out by sea , by air, by express as soon as possible once payment receipt.
Potassium Oleate CAS 143-18-0插图

Potassium Oleate Properties

Other NamesOleic acid potassium salt
CAS No.143-18-0
Compound FormulaC18H33KO2
Molecular Weight320.55
AppearanceWhite Powder
Melting PointN/A
Boiling PointN/A
DensityN/A
Solubility in H2ON/A
Exact Mass320.211762
Monoisotopic Mass320.211762
  
  

Potassium Oleate Health & Safety Information

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Hazard StatementsH315-H319-H335-H400
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Product name: Potassium OleateCAS NO. 143-18-0About Potassium Oleate:Potassium oleate, another name is Potassium cis-9-octadecenoate. The chemical formula is C18H33KO2. Potassium oleate is a brown solid or a […]

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Hexagonal Boron Nitride is 10 Times Stronger Than Graphene

Hexagonalboron nitride , is a two-dimensional layered broadband gap insulating material. It has good heat resistance, chemical stability and dielectric property. It is used extensively in electronic devices.
Hexagonalboron nitride has structural similarities to graphene. This is a hexagonal planar lattice containing atoms that are interconnected in hexagons. There is one difference: graphene has all carbon atoms. H-BN contains only three nitrogen and three of boron atoms per hexagon.



The strongest carbon-carbon bonds make graphene stronger than HBN. Both the strength and elastic modulus are comparable, with hBN slightly lower: graphene is stronger than HBN at 130GPa, while HBN has an elastic modulus around 1.0TPa. HBN’s strength and modulus are respectively 100GPa, 0.8 TPA and 0.9 TPA.
Graphene’s excellent mechanical properties are offset by its low crack resistance. This makes it brittle.

British engineer Griffiths published in 1921 a theoretical study on fracture mechanics. This included a description of the failures of brittle materials as well as the relationship between size of cracks and the forces required to make them grow. Engineers and scientists have been using this theory for many years to predict the strength of materials.
Jun Lou, Rice University’s Professor, and his research team, found that graphene has a high degree of fracture toughness. The study was consistent with Griffith’s theory about fracture mechanics. Graphene cracks will propagate when its stress exceeds the force it holds together.
Due to its structural similarities to graphene H-bn could also make it vulnerable. But this is incorrect.

H-BN was found to be 10x more ductile that graphene, according to scientists.
The cracking resistance of H-BN, which is brittle and ductile, was determined by a team consisting of Prof. Jun Lou at Rice University and Prof. Hua Yian Gao from Nanyang Technological University. Griffith’s fracture theory is not supported by this finding. Such anomalies were never seen in other two-dimensional materials. Nature published the related research findings under “Intrinsic roughening, stable crack propagation and Hexagonal Boron nuitride”.

What’s the secret to H-BN’s extraordinary toughness
They applied stress to H-BN samples using transmission electron microscopes and scanning electron microscopes. This allowed them to understand how cracks formed. The mystery was solved after over 1,000 hours of experimental work and the subsequent theoretical analysis.



H-Bn graphene is structurally identical to graphene, however boron atoms and nitrogen atoms differ. HBN therefore has an intrinsic asymmetric arrangement for hexagonal lattice, not like graphene. The cracks in graphene tend to cut through the symmetrical hexagonal structure top to bottom and open the bond as a zipper. H-BN has a hexagonal structure that is slightly different due to the stress difference between boron & nitrogen. Because of this, cracks can bifurcate and form branches.
The crack that splits means the crack is turning. To make the crack harder to propagate, this steering crack needs additional energy. H-Bn is more elastic than graphene.

The excellent heat resistance, chemical stability and dielectric properties of H-BN have made it an essential material in two-dimensional electronic, as well as other 2-bit devices. This is not only for its support but also because it acts as an insulating layer to electronic components. hBN is a tough material that can be used to make flexible electronics. This makes it a good choice and important in the development of 2D flexible materials suitable for two-dimensional electronic applications.
Future uses for hBN include electronic textiles that are flexible and electronic skin, implantable electronics, and electronic skin.

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Hexagonalboron nitride , is a two-dimensional layered broadband gap insulating material. It has good heat resistance, chemical stability and dielectric property. It is used extensively […]

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