Category: Products

Chromium Cr Powder CAS 7440-47-3

About Chromium Cr Powder:
Chromium is a steel-gray, lustrous, and hard metal that finds wide use as a catalyst or in alloys. Chromium is used as a hardener in steel, for the manufacture of stainless steel and many useful alloys. It is also employed to give glass an emerald green color. Chromium does not oxidize in the air, even in extreme moisture. What is chromium powder? Chromium powder is a silvery-white metal with a slightly dark gray color (body-centered cubic crystal system). Melting point (1857 soil 20)℃.The boiling point of 2672 ℃.
Relative density D28 7.20. Soluble in dilute sulfuric acid, dilute hydrochloric acid, insoluble in water, nitric acid, aqua regia. Chromium, the chemical symbol Cr, has an atomic number of 24 and belongs to the ⅥB group in the periodic table. The element name comes from the Greek word meaning “color,” because chromium compounds have colors. The single material is steel-gray metal, which is the hardest metal in nature. The content of chromium in the earth’s crust is 0.01%, ranking the 17th. Free natural chromium is extremely rare and mainly exists in chrome-lead ore. Metal chromium powder can burn under high temperatures and open flame. It has almost no harmful effect on the human body and has not been reported to cause industrial poisoning. But hexavalent chromium ions are carcinogenic. Packing and storage of products in iron drums lined with polyethylene plastic bags should be stored in dry and clean warehouses. Not to be stored and transported together with acids. Fire can be used dry powder, sand to extinguish. Tungstenmolybdenummetals is a trusted global Chromium Cr Powder supplement supplier. Feel free to send an inquiry about the latest price of Chromium powder at any time.

Product Information of chromium powder CAS 7440-47-3:

chromium powder Purity: 99.95% 
Copper powder Appearance: grey nanopowder
Copper powder FSSS: 53 to 125 microns
Copper powder Bulk density: 3.8 g/cm3
chromium powder COA:

How is Chromium Cr Powder produced?
In the production of chromium, the calcination process of chromite calcium is used to convert chromium trioxide into sodium chromate, which is leached into sodium chromate solution with dilute solution and water, and then manufactured by electrolysis method.
Electrolysis method: when sodium chromate is used as compensation solution for electrolysis, the cathode solution is 40g/L(Cr), 90g/L (NH4);Anodic solution is 22g/L (Cr), 18g/L (NH4), 200g/ LH2S04.Chromium metal was prepared by electrolysis of stainless steel for cathode and Pb-Ag alloy for anode at the temperature of about 60℃, cell voltage of 4.8V and current density of 8.6A/CrR12. Due to the high content of silicon, aluminum and other impurities in chromite and its additive, the amount of slag discharged in the process is large, because the slag contains toxic water-soluble Cr6+, which seriously pollutes the environment.
The process developed in recent years: the chromite is first reduced by carbon into carbon ferrochrome, and then oxidized by roasting and leaching with soda ash, dolomite and other mixtures to obtain sodium chromate solution, which is reduced by sulfur and calcined to obtain chromium oxide, and then smelted, sandblasted and finished with aluminum to obtain metal chromium products. The advantage of this method is that most of the impurities in chromite enter the smelting slag, so the total chromium in the mixture can be higher, and the pollution to the environment can be reduced, and the soda ash consumed in the roasting process is less, and the quality of the products can be improved at the same time.
 
Applications of Chromium Cr Powder:
Chromium powder uses are very wide. Chromium powder can be used as light-resistant, the heat-resistant coating also can be used as abrasives, glass, ceramic colorant, chemical synthesis of catalyst. Chromium alum and dichromate are used as tanning materials for leather, mordant, impregnating agent and various pigments for fabric dyeing. Chromium plating and chromizing can make steel, copper, aluminum and other metals form a corrosion-resistant surface, and bright and beautiful, widely used in furniture, automobile, construction and other industries. In addition, chrome ore is also used in large quantities to make refractory materials. Used for refining high-temperature alloy, resistance alloy, precision alloy as additive of chromium element. Pure chromium is used for electroplating.

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

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

Chromium Chip Chromium Sheet Chromium Flake CAS 7440-47-3

About Chromium Chip Chromium Sheet Chromium Flake:
Chromium sheet is also called Chromium Ship, Chromium Flake. Chromium sheet is a hard and brittle steel gray bright metal, hardness such as corundum, melting lower than platinum; Can react with dilute hydrochloric acid, sulfuric acid, but no reaction with nitric acid; It can be eroded by caustic soda and carbonates, and is not oxidized by air. Insoluble in water. Chromium is a lightweight blue-silver-white metal. The name chrome comes from the Greek word chroma, which means color. Chromium flake portal: Tungstenmolybdenummetals is a trusted global Chromium Chip Chromium Sheet Chromium Flake supplier. Feel free to send an inquiry about the latest price of Chromium Chip Chromium Sheet Chromium Flake at any time.
Chromium sheet is a popular material for all types of protective coatings because of its high corrosion resistance to many different acids, bases and high-temperature gases. Electrorefining Chromium sheets are commonly used in vacuum metallurgy to produce heat-resistant nickel-chromium superalloys.

Product name: chromium chip

chromium flake density: 6.8g/cm3

chromium flake purity: 99.95%

chromium flake application:

Chromium flake certificate of analysis:

How is Chromium Chip Chromium Sheet Chromium Flake produced?
Pure chromium is produced by aluminum heat reduction CR2O3 or electrolytic trivalent chromium solution. The aluminum heat is first carried out in air at 1100 ° C (2000 ° F), baking fine ore, soda and lime.
 
Applications of Chromium Chip Chromium Sheet Chromium Flake:
Chromium sheets are widely used in many industries.
In electronics, Chromium sheets are used to vaporize and deposit thin films in units involving electron beam heating.
By heat treatment in a pure nitrogen atmosphere, the Chromium sheet can be converted into Chromium nitride (Cr2N) or nitride products containing other components for the doping of special steels and alloys.
Through mechanical grinding, electrorefining Chromium sheets can be converted into powder and coarse sand with different chemical compositions and dispersion.
Chromium sheets are made from a powder made from pure electrolytic refined Chromium.
Chromium sheet is used for coating, thin film chemical vapor deposition (CVD) and physical vapor deposition (PVD) processes.
Chromium sheet is a bright decorative coating for operating components on electrical appliances or jewelry.

Storage Condition of Chromium Chip Chromium Sheet Chromium Flake:
The damp reunion will affect chromium chip chromium sheet chromium flake dispersion performance and using effects, therefore, chromium chip chromium sheet chromium flake should be sealed in vacuum packing and stored in a cool and dry room, the chromium chip chromium sheet chromium flake can not be exposure to air. In addition, the chromium chip chromium sheet chromium flake should be avoided under stress.

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

Titanium Ti Powder CAS 16962-40-6

About Titanium Ti Powder:
Titanium powder is a kind of metal powder with a wide range of uses. Titanium powder is a silver-gray irregular powder, has a large suction capacity, high temperature or sparks under the condition of flammable. Titanium powder metallurgy (P/M) offers the possibility of manufacturing clean – or near-clean – shaped parts without the material losses and costs associated with machining complex parts from forged billets. Powders can be elemental blending or pre-alloying and then cured by metal injection molding, hot isostatic pressing, direct powder rolling, or laser engineering mesh forming.
Among the metallic elements, titanium has high specific strength. It is a high-strength but low-mass metal and has fairly good ductility (especially in the absence of oxygen). The surface of titanium is silvery-white metallic luster. Its melting point is quite high (over 1,649 degrees Celsius), so it is good refractory metal. It is paramagnetic and its electrical and thermal conductivity are very low.
Titanium, which has two allotropes, transforms from the hexagonal most densely packed α type to the body-centered β type at 882 degrees Celsius. The specific heat of type α increases sharply with increasing temperature until it reaches the critical temperature, but decreases when it reaches the critical temperature, and then remains essentially constant for type β regardless of temperature. Like zirconium and hafnium, titanium also has a ω-state that is thermodynamically stable at high pressure but may also be isostatically stable at atmospheric pressure. This state is generally hexagonal (ideal) or triangular (twisted) and can be observed when soft P-wave acoustic photons cause the plane collapse of a β-type (111) atom. Tungstenmolybdenummetals is a trusted global Titanium Ti Powder supplier. Feel free to send an inquiry about the latest price of Titanium at any time.
Titanium has a considerable hardness, though not as strong as higher-grade heat-treated steels. Titanium is non-magnetic and is a poor conductor of heat and electricity. Mechanical handling needs to be careful, because, without sharp tools and proper cooling techniques, titanium will soften and leave an indentation. Like steel structures, titanium structures have a fatigue limit, which ensures durability in some applications. The specific stiffness of titanium alloy is generally not as good as other materials such as aluminum alloy and carbon fiber, so it is rarely used in structures requiring high stiffness. 

Features of Titanium Ti powder CAS 16962-40-6:

How is Titanium Ti Powder produced?
The traditional titanium production technology is through the Kroll process, that is, in the presence of carbon in the presence of chlorinated titanium dioxide ore, TiCl4 generated by the reaction with magnesium to form titanium sponge. These processes occur at temperatures up to 1040°C. The particle size range of sponge particles is 45 ~ 180 μm, and the particle size within 150 μm is called “sponge particles”.These tiny particles are irregularly shaped, porous, spongy and then the fine powder is mixed with an alloy additive; The green compaction was cold-pressed at 415 MPa and then vacuum-sintered at 1260 ° C to produce components of 99.5% density. Hot isostatic pressing (HIP) can further increase the density of these parts, making it more economical to produce parts than casting or forging parts, but the porosity present in the material reduces fatigue and fracture properties.
 
Applications of Titanium Ti Powder:
Titanium powder is used in pyrotechnic manufacturing to provide bright burning particles.
Titanium powder is also used in air purifiers (filter coatings), and in the film that is attached to building Windows that, when exposed to ultraviolet light (solar or artificial) or moisture in the air, produces highly reactive REDOX species, such as hydroxyl groups, that clean the air or keep window surfaces clean.
Titanium is used to make propeller shafts, rigging and heat exchangers in desalination plants because it is not easily corroded by seawater. Titanium powder is also used in cold water heaters in saltwater aquariums, fishing lines and diving knives. Titanium is used to make housing and other components for Marine surveillance deployments, as well as for scientific and military surveillance devices.
 

Storage Conditions of Titanium Ti powder:

The damp reunion will affect its dispersion performance and using effects, therefore, this product should be sealed in a vacuum and stored in a cool and dry room and it should not be exposure to air. In addition, the Titanium Nanoparticles should be avoided under stress.

Ti Nanoparticles Cautions:

1. Ti nanoparticle is flammable. It should be gently placed and avoided violent vibration and friction.

2. Titanium Nanoparticles should be prevented from moisture, heat, impact and sunlight.

3.The user must be a professional (This person must know how to use Titanium Ti Nanoparticle.)

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

Cobalt Co Powder CAS 7440-48-4

About Cobalt Co Powder:
Cobalt has excellent physical, chemical and mechanical properties, and is an important material in the manufacture of high strength alloys, high-temperature resistant alloys, hard alloys, magnetic materials and catalysts. Cobalt powder is one of the main raw materials of cemented carbide, and the demand at home and abroad increases year by year. With the development of cemented carbide industry, cobalt powder used in cemented carbide has three development trends: ultrafine cobalt powder, nano WC-Co powder and spherical cobalt powder. Is Cobalt harmful to humans? Cobalt can harm the eyes, skin, heart, and lungs. Exposure to cobalt may cause cancer. Workers may be harmed from exposure to cobalt and cobalt-containing products. The level of harm depends upon the dose, duration, and work being done. This is more and more strict for the quality of cobalt powder, not only for the chemical composition of cobalt powder put forward higher requirements but also for the physical properties of cobalt powder such as particle size, particle size distribution, crystal morphology and so on. The decrease of cobalt powder particle size can significantly reduce the ball milling time and sintering temperature of the cemented carbide powder mixture, enhance the flexural strength, wear resistance and fracture resistance of cemented carbide, and reduce the occurrence of cobalt pool and pore.
 
Cobalt powder is used as a bonding component in cemented carbide, so it is required to have good oxidation resistance and corrosion resistance, otherwise cemented carbide is prone to corrosion, crack and other defects. Why is cobalt so expensive? Political instability has historically affected cobalt prices. Tungstenmolybdenummetals is a trusted global Cobalt powder supplier. Feel free to send an inquiry about the latest price of Cobalt powder at any time. Current battery technology requires cobalt as part of the cathode. Demand for cobalt continues to grow, given the growing popularity of electric cars. Recent trends suggest that demand will outstrip supply, leading to higher prices.

Cobalt Co Powder CAS 7440-48-4 Features:

Cobalt powder nanoparticle is a kind of spherical metal nanoparticle produced through laser evaporation. Cobalt powder is not an abundant element but is widely diffused in rocks, sea and mineral waters, coal, meteorites, the sun and stellar atmospheres, soils, plants and animals.

Cobalt powder Specification:

How is Cobalt Co Powder produced?
The preparation method of cobalt powder is as follows:
Step 1: The soluble cobalt salt and ammonium bicarbonate are injected into the base solution of ammonium bicarbonate by concurrent flow, and the slurry with cobalt carbonate crystal seed is obtained by stirring reaction.
Step 2: Continue to add cobalt salt and ammonium bicarbonate into the slurry of cobalt carbonate crystal seed, react, and then control the pH value to get cobalt carbonate crystal, and then dry the cobalt carbonate crystal to get cobalt carbonate powder;
Step 3, cobalt carbonate powder is reduced in a hydrogen atmosphere to obtain cobalt powder.

Applications of Cobalt Co Powder:
Cobalt is an important ferrous metal, because of its good physical, chemical and mechanical properties, with high catalytic activity, high saturation magnetization, good oxidation resistance and other advantages, so what is cobalt powder used for? Cobalt is widely used in hard alloy, aviation, catalysis, magnetic materials, medicine and new materials, and other fields, it is used for hard alloy material (such as cemented carbide and artificial diamond tools) one of the key raw materials, its performance determines the bonding performance of hard alloy material, strength and toughness, the using performance of hard alloy material is of crucial importance.
In addition, cobalt is one of the few metals that can remain magnetic after magnetization, magnetic steel containing 60% cobalt has 2.5 times higher coercion force than ordinary magnetic steel, and the magnetic loss of cobalt steel is very little under vibration.
Cobalt and cobalt alloy powders are used in the powder metallurgy (PM) industry, mainly in the production of permanent magnets, high-temperature alloys (high temperature and creep resistant alloys) and wear-resistant surfacing alloys. Cobalt is used in electroplating for its attractive appearance, hardness and resistance to oxidation. Cobalt can also be used as a base coating for porcelain enamels.

Cobalt Co Powder Cautions: 
1. Cobalt powder has flammable hazards, so it should be gently placed and to avoid violent vibration and friction. 

2. Metal nano cobalt powder should be prevented from moisture, heat, impact and sunlight.

3 . The user must be a professional (This person must know how to use this product.)

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

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

Spherical Graphite C Powder CAS 7782-42-5

About Spherical Graphite C Powder:
Spherical graphite (SPG), also known as battery-grade graphite, is a product consumed as an anode in lithium-ion batteries. The flake graphite concentrate is processed into ultra-high purity (>99.95%C) with a particle size ranging from 10 microns to 25 microns. Spherical graphite material has good electrical conductivity, high crystallinity, low cost, high theoretical lithium insertion capacity, low charge and discharge potential and flatness. It is an important part of lithium-ion battery negative electrode material and is used as a negative electrode for lithium-ion battery production at home and abroad. Material replacement products. It has excellent electrical conductivity and chemical stability, high charge and discharge capacity, long cycle life, and environmental protection. Tungstenmolybdenummetals is a trusted global Spherical Graphite C Powder supplier. Feel free to send an inquiry about the latest price of Spherical Graphite C at any time.

Specification of spherical graphite C powder CAS 7782-42-5：

Spherical graphite powder  Purity: 99.98% 
Spherical graphite powder  APS: 8.5μm(Can be customized)
Spherical graphite powder  Ash: 0.021%
Spherical graphite powder  H2O: 0.08%

Spherical graphite powder  S content:62ppm

Spherical graphite powder  Fe content: 19ppm

Spherical graphite powder  Cl content: 30ppm

Spherical graphite powder  SSA: 11.79m2/g

Spherical graphite powder  Tap density:0.831g / ml

Spherical graphite powder  PH: 4.15
Spherical graphite powder  Morphology: Spherical
Spherical graphite powder  Color: black

Characteristics of spherical graphite C powder:
Long life

High-capacity
High energy density

High compaction density

Using the highest quality imported artificial graphite developed

How is Spherical Graphite C Powder produced?
Spherical graphite is produced through fine grinding, purification and sterilization. It is made of flake graphite concentrate produced from graphite ore.
Generally, flake graphite is shaped into a spherical shape by a mechanical grinding process. The round shape of graphite allows particles to be more efficiently accumulated in the LiB anode, thereby increasing the energy and charging capacity of LiB.
Then the spheroidized graphite is purified to eliminate harmful elements, including SiO2, Fe, S and other metal elements. Various purification techniques are used. These measures include the use of hydrofluoric acid for active acid purification and the use of high-temperature furnaces for thermal purification. Both methods have their advantages and disadvantages.
Active acid purification is a means and an effective purification method, but due to the nature of the acids used (including hydrofluoric acid), there are toxic and dangerous working environments and environmental management challenges. Thermal purification is an electric heating process. Compared with acid purification, it is very expensive, but it is very safe and does not affect the environment.
After purification, please use purified spherical graphite to help improve the surface area and surface area of the particles. Many LiB manufacturers use their own proprietary technology for coating.
The purified spherical graphite is then packaged into the anode shape required for LiB batteries.

Applications of spherical graphite C powder:
Spherical graphite material has the characteristics of good conductivity, high crystallinity, low cost, high theoretical capacity for inserting lithium, low charge and discharge potential and flatness. It is an important part of the negative electrode material of lithium-ion batteries and the positive electrode produced by lithium-ion batteries at home and abroad. Material replacement products. It has excellent electrical conductivity and chemical stability, strong charge and discharge capacity, long cycle life, and environmental protection. Spherical graphite is used for high-end lithium-ion prismatic, cylindrical polymer batteries.

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

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

Single And Multi Layer Graphene Powder

Features of Graphene Powder:
Single layer graphene powder has a two-dimensional structure of a carbonaceous new material. graphene powder has excellent electrical, thermal and mechanical properties.

Our Company produced single layer graphene powder with a very large surface area 500 ~ 1200m2/g.

single layer graphene
single layer graphene Purity: >99.3wt%
single layer graphene single layer ratio: 97%
single layer graphene Thickness: 0.55nm – 1.2nm
single layer graphene  Diameter: 1μm – 12μm
single layer graphene Specific Surface Area: 500 – 1200m2/g
single layer graphene Color: Black
single layer graphene Conductivity: 1000-1500 S/M
single layer graphene The Product COA: C=99.6%, O<0.4%

About Single And Multi-Layer Graphene Powder:
Graphene is a kind of new material that is composed of carbon atoms connected by SP ² tightly packed into a monolayer two-dimensional honeycomb lattice structure. Graphene has excellent optical, electrical and mechanical properties, and has important application prospects in materials science, micro-nano processing, energy, biomedical and drug delivery, etc., and is considered a revolutionary material in the future.
Single-layer graphene
What is graphene a single layer of? Graphene is a single layer (monolayer) of carbon atoms, tightly bound in a hexagonal honeycomb lattice. It is an allotrope of carbon in the form of a plane of sp2-bonded atoms with a molecular bond length of 0.142 nanometres. Single-layer Graphene refers to a two-dimensional carbon material consisting of a layer of carbon atoms that are periodically packed together in a benzene ring structure (i.e., a hexagonal honeycomb structure).
Graphene (few-layer)
What is few layer graphene? Graphene (few-layer) refers to a two-dimensional carbon material composed of 3-10 layers of carbon atoms stacked in a benzene ring structure (i.e. hexagonal honeycomb structure) in different stacking ways (including ABC stacking, ABA stacking, etc.).
Multilayer graphene
Multilayer graphene, also known as multi-layer graphene, refers to a two-dimensional carbon material composed of the benzene ring structure (namely hexagonal honeycomb structure) with a thickness of more than 10 layers and less than 10nm and the carbon atoms stacked periodically and closely in different stacking ways (including ABC stacking, ABA stacking, etc.).
Single-layer graphene has emerged as a high-performance material capable of replacing outdated technologies, benefiting countless industries. Graphene is very light, but it’s very durable, and it’s able to conduct high levels of electricity through very small amounts of material. Applications for graphene include small electrical circuits and sockets, medical devices, and solar cells. Because of its flexibility, many industry leaders have started using graphene to ensure the safety of their various devices without compromising their efficiency. Single-layer graphene has proven to be a very reliable resource that is both economical and energy-efficient.
Single-layer graphene of the ACS material is available in powder or dispersed form. Single-layer graphene powders are produced using a combination of thermal peel reduction and hydrogen reduction. The monolayer graphene dispersions were created using our own mechanical stripping and dispersion methods. Both products do not contain metal ions and can be used as a conductive agent to improve the high rate of charge and discharge capacity of the battery. In addition to batteries, single-layer graphene powders and dispersants are used in supercapacitors, lead-acid batteries, solar cells, semiconductor chips, graphene films, coatings, and many biological materials.Tungstenmolybdenummetals is a trusted global Single And Multi Layer Graphene Powder supplier. Feel free to send an inquiry about the latest price of Graphene at any time.
Graphene layers consist of ultra-thin layers of carbon atoms arranged in a hexagonal honeycomb lattice. Graphene films produced by chemical vapor deposition (CVD) are polycrystalline in nature, with multiple small graphene domains growing and merging into a continuous film. Compared to single-layer graphene, fewer layers have the potential to develop into materials or heterostructures — by inserting different substances into their layered structures. 

How is Single And Multi-Layer Graphene Powder Produced?
The common powder production methods of graphene are the mechanical stripping method, REDOX method, SiC epitaxial growth method, and chemical vapor deposition (CVD) method.
Dispersible monolayer graphene was prepared by complete reduction of GO prepared by Hummer method. Commonly used preparation methods can produce denser graphene, which tends to aggregate. The resulting graphene clumps are insoluble in water or other polar solvents and can no longer disperse, making further treatment difficult. Our dispersible graphene avoids this problem and can be re-dispersed in many solvents.
 
Applications of Single And Multi-Layer Graphene Powder:
With the gradual breakthrough of mass production and large size problems, the industrialized application of graphene is accelerating. Based on the existing research results, the first fields to achieve commercial application may be mobile devices, aerospace, new energy batteries. With a unique combination of novel electronic, optical and mechanical properties, graphene-based nanomaterials have found applications in energy generation and storage. For example, they are used in basic research, transmission photovoltaic devices, transistors and batteries, new energy batteries, sensors and flexible electronic devices, aerospace fields, photodetectors and biomedical applications (such as drug delivery, biological imaging and tissue engineering), etc.
The research and application development of graphene continue to heat up. Graphene and graphene-related materials are widely used in battery electrode materials, semiconductor devices, transparent display screens, sensors, capacitors, transistors and other aspects. Due to the excellent performance and potential application value of graphene materials, a series of important advances have been made in many fields such as chemistry, materials, physics, biology, environment, energy and so on. Researchers are trying different methods in different fields to produce high-quality, large-area graphene materials. And through the continuous optimization and improvement of the preparation process of graphene, the preparation cost of graphene can be reduced so that its excellent material properties can be more widely used, and gradually toward industrialization.

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

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

Selenium powder Se powder CAS 7782-49-2

About Selenium powder Se powder:
Selenium powder, chemical formula Se, black gray nonmetal, soluble in concentrated sulfuric acid, chloroform, slightly soluble in carbon disulfide, toxic, insoluble in water, ethanol. Selenium powder is usually in the form of powder or granule, with pure appearance, consistent color, purity up to 99.99%, no soil and other impurities, stable composition and even moisture.
Selenium is a chemical element with the symbol Se and an atomic number of 34. It is a nonmetal (much less thought of as a nonmetal), somewhere between sulfur and tellurium on the periodic table, and also similar to arsenic. Selenium is found in metallic sulfide ores, where it partially displaces sulfur. Commercially, selenium is a by-product of the refining process of these ores, usually during the production process. Pure selenium or selenate compounds are known but are rare. Today the main commercial uses for selenium are glassmaking and pigments. Selenium is a semiconductor used in photovoltaic cells. The once important applications of electronic products have been largely replaced by silicon semiconductor devices. Selenium is still used in several types of DC power surge protectors and one type of fluorescent quantum dot. Tungstenmolybdenummetals is a trusted global Selenium powder Se powder supplier. Feel free to send an inquiry about the latest price of Selenium powder at any time.
Although trace amounts of selenium are necessary for cellular function in many animals (including humans), the elements of selenium and (especially) selenium salts are toxic in even small doses, leading to selenium poisoning. Selenium is an ingredient in many multivitamins and other dietary supplements, as well as infant formula, and is a component of the antioxidant enzymes glutathione peroxidase and thioredoxin reductase (which indirectly reduce certain oxidizing molecules in animals and some plants) and three diiodide enzymes. 

Features of selenium Se powder CAS 7782-49-2: 
Amorphous red powder, becoming black on standing and crystalline on heating; vitreous and colloidal forms may be prepared. Amorphous form softens at 40 °C and melts at 217 °C. It rarely occurs in its elemental state in nature, or as pure ore compounds. Soluble in concentrated nitric acid and in (liquid form) common alkalies. Forms binary alloys with silver, copper, zinc, lead, etc. Low toxicity. A necessary nutritional factor for animals.

How is Selenium powder Se powder Produced?
Selenium is a kind of sparse element, and there is no independent selenium production plant in the world. Selenium is associated with electrolytic copper and nickel, which exists in anode mud of electrolytic anode. There are many methods to recover and purify selenium and tellurium from copper electrolytic anode mud, such as caustic oxidation pressure leaching, oxidation roasting high-temperature leaching, low-temperature oxidation roasting, dilute sulfuric acid leaching, etc. Selenium and tellurium are reduced mostly by sulfur dioxide reduction and copper reduction. Due to the method of pre-roasting and oxidation, the maintenance cost of complex power equipment is high, the sulfur dioxide gas is harmful to the human body and the environment, and the recovery and purity of selenium and tellurium are high. With H2O2 as oxidant, selenium and tellurium were oxidized in a weakly acidic solution. After solid-liquid separation, selenium and tellurium were separated by adjusting pH, and selenium and tellurium were reduced by Na2SO3 under hydrochloric acid acidification. The recoveries of selenium and tellurium were 99% and 98%, respectively, and the purity of both of them could reach 99%.

Applications of Selenium powder Se powder:
Selenium can be used in different fields, depending on its purity. Selenium is now used in a wide variety of applications, from glass and metallurgy to pigments, agriculture and electronics. Selenium powder is mainly used in the production of selenium dioxide as electrolytic manganese melting catalyst, other applications in rectifier, photographic exposure agent, petroleum working catalyst, copy toner cartridge, selenium photosensitive plate, alloy, feed and pigment in plastics, paint, enamel and glass, medical and health care medicine and other industries.

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