About Gallium Sulfide Ga2S3 Powder:Gallium (III) sulfide Ga2S3 is a compound of sulfur and gallium, i.e., a semiconductor having electron and photon parts. Ballium sulfide (III) is slowly decomposed in moist air…
About Gallium Sulfide Ga2S3 Powder:
Gallium (III) sulfide Ga2S3 is a compound of sulfur and gallium, i.e., a semiconductor having electron and photon parts. Ballium sulfide (III) is slowly decomposed in moist air and releases hydrogen sulfide, and can be used as sulfate. Gallium titrates and thiolate acid salts are formed in a strong base. Ga2S3 was not proportional to the high temperature of the non-chemical measuring sulfide, and Ga4SX (4.8
Gallium (III) sulfide Ga2S3 has four polymorphs, α (hexagonal), α ‘(single lean), β (hexagon), and γ (cubic). Alpha is yellow. The crystal structure is related to the four-faceted position in Zns in Zns in Zns. The similarity of the crystal form of the γ-flared zinc ore (zinc mixture). Feel free to send an inquiry to get the latest price if you would like to buy Gallium Sulfide Ga2S3 Powder in bulk.
High Purity 99.99% Semiconductor Material Ga2S3 Powder Price Gallium Sulfide
Certificate Analysis of Gallium Sulfide
| Purity | Cu | Ni | Zn | In | Ca | Fe | Cr | Co | Na | Mn |
Content | 99.99% | ≤5ppm | ≤5ppm | ≤10ppm | ≤5ppm | ≤5ppm | ≤10ppm | ≤3ppm | ≤5ppm | ≤5ppm | ≤5ppm |
Gallium Sulfide formula: Ga2S3
Gallium Sulfide property: white solid
Gallium Sulfide density: 3.46-3.65g/cm3
Gallium Sulfide melting point: 1090-1255℃
Gallium Sulfide application: semiconductor industry, copper indium gallium sulfur thin-film solar cells
How is Gallium Sulfide Ga2S3 Powder produced?
Ga2S3 was heated by heating Ga in an H2S flow at high temperature (950 ° C), by flow in a high temperature (950 ° C), can pass through a high temperature (950 ° C) in the stream of high temperature (950 ° C). The element reaction was prepared by reacting in a high temperature or white solid.
It can also be prepared by solid-state reactions of GaCl3 and Na2.
Applications of Gallium Sulfide Ga2S3 Powder:
The sulfide (Ga2S3) belongs to a set of broadband semiconductors, a broadband semiconductor having an interesting characteristic for infrared and nonlinear optics. The interest of the Ga2S3 material is highly passivated by various semiconductor surfaces to enhance its electrical and optical properties. This work involves the growth of the microcrystalline halogen layer on the semiconductor gap substrate.
The Ga2S3 layer: 450 ° C and 600 ° C were successfully obtained by a thin clearance semiconductor plate reaction sulfur steam at two different temperatures. In the case where the lower temperature (400 ° C) is observed on the gallium sulfide layer. Applicable atomic force microscopy and scanning electron microscopy to illustrate the topography of the obtained Ga2S3 layer. They have a thickness range from hundreds of nanometers to about 1-2 μm.
Storage Condition of Gallium Sulfide Ga2S3 Powder:
Damp reunion will affect Ga2S3 powder dispersion performance and using effects, therefore, Gallium Sulfide Ga2S3 Powder should be sealed in vacuum packing and stored in cool and dry room, the Gallium Sulfide Ga2S3 Powder can not be exposure to air. In addition, the Ga2S3 powder should be avoided under stress.
Packing & Shipping of Gallium Sulfide Ga2S3 Powder:
We have many different kinds of packing which depend on the Gallium Sulfide Ga2S3 Powder quantity.
Gallium Sulfide Ga2S3 Powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Gallium Sulfide Ga2S3 Powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Gallium Sulfide Properties |
Other Names | gallium(III) sulfide, gallium sulphide, gallium trisulfide,
digallium trisulphide, Ga2S3 powder |
CAS No. | 12024-22-5 |
Compound Formula | Ga2S3 |
Molecular Weight | 235.64 |
Appearance | White Powder |
Melting Point | 1255℃ |
Boiling Point | N/A |
Density | 3.65-3.77 g/cm3 |
Solubility in H2O | N/A |
Exact Mass | 235.766498 |
| |
| |
Gallium Sulfide Health & Safety Information |
Signal Word | Danger |
Hazard Statements | H314-H318 |
Hazard Codes | C |
Risk Codes | N/A |
Safety Statements | N/A |
Transport Information | UN 3260 8 / PG II |
About Nickel Disulfide NiS2 Powder:Nickel sulfide is an inorganic salt, insoluble in water, soluble in nitric acid, aqua regia.Nickel disulfide is an inorganic compound with the chemical formula Nis2 and has a…
About Nickel Disulfide NiS2 Powder:
Nickel sulfide is an inorganic salt, insoluble in water, soluble in nitric acid, aqua regia.Nickel disulfide is an inorganic compound with the chemical formula Nis2 and has a pyrite structure.Nickel disulfide is a kind of electronic, energy and chemical material which has attracted more and more attention in recent years. It has unique electronic structure, molecular structure and excellent optical, electrical and magnetic properties. Tqhp is a trusted global Nickel Disulfide NiS2 Powder supplier. Feel free to send an inquiry about the latest price of Nickel Disulfide at any time.
Product Name: Nickel (IV) Disulfide
Lithium Sulfide molecular weight: 122.82
Lithium Sulfide CAS NO.: 12035-51-7
Lithium Sulfide density: 5.8 g/cm3
Lithium Sulfide chemical formula: NiS2
Lithium Sulfide color: black
Lithium Sulfide Storage:
Free from heat and kept in ventilated and dry place.
Lithium Sulfide Application:
It can be used as a potential electrolyte material in rechargeable lithium-ion batteries.
How is Nickel Disulfide NiS2 Powder Produced?
A method for preparing high purity nickel disulfide comprises the following steps: Soluble nickel salt dissolved in deionized water, add acid to adjust solution pH value is 0 ~ 3, and add water-soluble sulfur compounds, sulfur/nickel mole ratio of 4 ~ 10, after mixing completely dissolved into the reaction kettle, and the nickel salt and sulfur compounds under the environment of microwave thermal water, in 180 ~ 220 ℃ constant temperature reaction of 1 ~ 3 h, After washing with water and alcohol, high purity nickel disulfide was obtained by vacuum drying.
Applications of Nickel Disulfide NiS2 Powder:
Nickel disulfide is used in the manufacture of nickel-containing catalysts and high-nickel alloys.
Nickel disulfide was used as a catalyst for catalytic decomposition and hydrogenation of organic compounds containing sulfur.
Nickel sulfide is increasingly conspicuous in recent years, a kind of electronics, energy and chemical material, has a unique electronic structure, molecular structure and excellent optical, electrical and magnetic properties of the rechargeable lithium battery cathode materials, photoconductive materials, solar energy battery storage device, infrared detector and hydrogenation denitrification reaction, hydrogenation desulfurization reaction has a broad industrial application prospect, etc.
Storage Condition of Nickel Disulfide NiS2 Powder:
The damp reunion will affect NiS2 powder dispersion performance and using effects, therefore, Nickel Disulfide NiS2 Powder should be sealed in vacuum packing and stored in the cool and dry room, the Nickel Disulfide NiS2 Powder can not be exposure to air. In addition, the Nickel Disulfide NiS2 Powder should be avoided under stress.
Packing & Shipping of Nickel Disulfide NiS2 Powder:
We have many different kinds of packing which depend on the Nickel Disulfide NiS2 Powder quantity.
Nickel Disulfide NiS2 Powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Nickel Disulfide NiS2 Powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Nickel Sulfide Properties |
Other Names | nickel(IV) sulfide, nickel disulfide, nickel(IV) sulphide, NiS2 powder |
CAS No. | 12035-51-7 |
Compound Formula | NiS2 |
Molecular Weight | 122.813 |
Appearance | Dark Gray Powder |
Melting Point | N/A |
Boiling Point | N/A |
Density | N/A |
Solubility in H2O | Insoluble |
Exact Mass | 121.879 g/mol |
| |
| |
Nickel Sulfide Health & Safety Information |
Signal Word | Danger |
Hazard Statements | H317-H341-H350-H372 |
Hazard Codes | Xn |
Risk Codes | N/A |
Safety Statements | N/A |
Transport Information | UN 3077 9/PG III |
Product Name: CuS Powder Copper Sulfide Powder CAS 1317-40-4Purity: min 99%Copper sulfide is an inorganic compound with a chemical formula of CuS or CuI2CuII(S2)S. Therefore, two-thirds of the sulphur is actually a persulfate…
Product Name: CuS Powder Copper Sulfide Powder CAS 1317-40-4
Purity: min 99%
Copper sulfide is an inorganic compound with a chemical formula of CuS or CuI2CuII(S2)S. Therefore, two-thirds of the sulphur is actually a persulfate ion, and two-thirds of the copper is a cuprous ion, which is dark brown and extremely polar. Insoluble, it is one of the most insoluble substances (second only to silver sulfide, mercury sulfide, and sulphide sulfide) because its poor solubility makes some seemingly unacceptable reactions.
About Copper Sulfide CuS Powder:
Copper sulfide is an inorganic compound with the chemical formula CuS, so it is actually a mixture of cuprous sulfide and supersulfide and is a black and brown amorphous powder or granular substance. It is extremely insoluble and is one of the most difficult substances to dissolve because its insolubility allows some seemingly impossible reactions to occur. Bonding in copper sulfide cannot be correctly described in terms of simple oxidation state forms because the properties of the Cu-S bond are somewhat covalent rather than ionic and have a high degree of delocalization, resulting in a complex electronic band structure.
Copper sulfide is a compound and mineral, which can be divided into three categories: single sulfide, disulfide and mixed single sulfide. Copper sulfide is naturally occurring in nature as a mineral, called cuprizone. It conducts electricity moderately. Both synthetic materials and minerals contain copper sulfide.
Copper sulfide describes a series of compounds and minerals from which minerals and synthetic materials are composed. Some copper sulfides are economically important ores. The main copper sulfide minerals include Cu2S(chalcocite) and CuS(copper porphyry).In the mining industry, bornite or chalcopyrite consisting of a mixed copper-iron sulfide is often referred to as “copper sulfide”.In chemistry, “binary copper sulfide” is any binary compound of the elements copper and sulfur. Regardless of their origin, the composition of copper sulfides varies greatly at 0.5 Cu/S 2 and includes many non-stoichiometric compounds. Feel free to send an inquiry to get the latest price if you would like to buy Copper Sulfide CuS Powder in bulk.
How is Copper Sulfide CuS Powder produced?
No sulfur and copper directly mixed heating to prepare copper sulfide, because the oxidation of sulfur is weak, the reaction will generate a mixture of copper sulfide and cuprous sulfide:
2Cu+S==△==Cu2S , Cu+S==△==CuS
Can make copper powder and sulfur dissolved in carbon disulfide reaction at 100℃ to produce pure copper sulfide:
Cu+S==100℃ , CS2==CuS
Laboratory preparation of copper sulfide is usually prepared by adding H2S gas or soluble sulfide (such as sodium sulfide) into copper salt (mainly copper chloride and copper sulfate) solution through double decomposition reaction:
CuCl2+H2S====CuS↓+2HCl (weak acid to strong acid)
This reaction can occur because copper sulfide is too insoluble, causing the equilibrium to shift to the right.
CuSO4+Na2S====CuS↓+Na2SO4
Applications of Bismuth Oxide Bi2O3 powder:
Copper sulfide has the following uses:
Solar cell
Superionic conductor
photodetector
Conductive electrode
Photothermal spectral analysis conversion equipment
Microwave shielding coating
An active absorber of radio waves
Gas sensor
Infrared radiation polarizer
Storage Condition of Copper Sulfide CuS Powder:
The damp reunion will affect CuS powder dispersion performance and using effects, therefore, Copper Sulfide CuS Powder should be sealed in vacuum packing and stored in a cool and dry room, the Copper Sulfide CuS Powder can not be exposure to air. In addition, the CuS powder should be avoided under stress.
Packing & Shipping of Copper Sulfide CuS Powder:
We have many different kinds of packing which depend on the Copper Sulfide CuS Powder quantity.
Copper Sulfide CuS Powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Copper Sulfide CuS Powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Copper Sulfide Properties |
Other Names | copper(II) sulfide, copper(II) sulphide, CuS powder |
CAS No. | 1317-40-4 |
Compound Formula | CuS |
Molecular Weight | 95.61 |
Appearance | Black Powder |
Melting Point | 500℃ |
Boiling Point | N/A |
Density | 4.6 g/cm3 |
Solubility in H2O | N/A |
Exact Mass | 94.901672 |
| |
| |
Copper Sulfide Health & Safety Information |
Signal Word | N/A |
Hazard Statements | N/A |
Hazard Codes | N/A |
Risk Codes | N/A |
Safety Statements | N/A |
Transport Information | N/A |
Product Name: Silicon SulfideSilicon Sulfide formular: SiS2Silicon Sulfide molecular weight: 92.21Silicon Sulfide density: 1.853 g/cm3Silicon Sulfide melting point: 1090℃Silicon Sulfide boiling point: 1130 ℃Silicon Sulfide CAS NO. : 13759-10-9Silicon Sulfide details:Silicon sulfide,…
Product Name: Silicon Sulfide
Silicon Sulfide formular: SiS2
Silicon Sulfide molecular weight: 92.21
Silicon Sulfide density: 1.853 g/cm3
Silicon Sulfide melting point: 1090℃
Silicon Sulfide boiling point: 1130 ℃
Silicon Sulfide CAS NO. : 13759-10-9
Silicon Sulfide details:
Silicon sulfide, the molecular formula is SiS2. White fibrous orthorhombic or tetragonal crystals are stable at normal temperature and pressure and decomposed into SiO2 and H2S in the presence of moisture. It burns when heated in the air.
About Silicon Sulfide SiS2 Powder:
Silicon sulfide is an inorganic compound with the molecular formula Sis2.Sis2 = 92.21, colorless acicular crystal.The relative density is 2.02, the melting point is 1090℃, and it sublimates in nitrogen at 1250℃. Insoluble in benzene; Soluble in dilute base. Hydrolysis and ammonolysis occurred with water, ethanol and liquid ammonia, respectively. Reaction with alkali metal sulfides to form thiosilicates.Like silicon dioxide, the material is polymerized, but it uses a one-dimensional structure that is distinct from the usual silicon dioxide form.
Like other silicosulfide compounds, such as bis (trimethylsilyl) sulfides, SiS2 is easy to decompose to release hydrogen sulfide. In liquid ammonia, it has been reported to form imide Si(NH)2 and NH4SH, but recent reports have identified the crystallization (NH4)2[SIS3 (NH3)]·2NH3 as a product containing the tetrahedral orthosilicate anion, SIS3 (NH3).
Tetraethyl orthosilicate and H2S were synthesized by reaction with ethanol. With a large volume of tert-butyl alcohol, alcoholysis to obtain tri (tert-butyl) silicon mercaptan:
3 (CH3)3COH + Sis2 →[(CH3)3CO] 3Sish + H2S
Reaction with sodium sulfide, magnesium sulfide and aluminum sulfide to give sulphosilicate. Feel free to send an inquiry to get the latest price if you would like to buy Silicon Sulfide SiS2 Powder in bulk.
How is Silicon Sulfide SiS2 Powder produced?
1. Put aluminum powder and excess sulfur into the crucible and burn it to get aluminum sulfide. The aluminum sulfide is crushed and mixed with slightly excessive silica sand. Place the mixture in a shingle, then place the shingle in a quartz tube, and heat the quartz tube while injecting a small amount of dry nitrogen. The reaction starts at 1100℃, and the sublimated Sis2 adheres to the low-temperature region of the tube at 1200 ~ 1300℃. When purified, it is sublimated again in nitrogen or vacuum. Tetragonal Sis2 can be prepared by heating the mixture of silicon and sulfur at 5×103MPa and 700℃.
2. Decompose hydrocarbon self-based silicon by heating to generate silicon disulfide and sulfide at 250 ~ 300℃.If sulfur is added, it decomposes at a lower temperature. Si-disulfide and ethylthioane (C2H5-S2-C2H5, C2H5-S3-C2H5) are produced by mixing 96g sulfur with 39g Si(SC2H5)4 and heating it at 200℃ for 10min. The latter is dissolved in benzene and filtered to prevent it from mixing with moisture.
Applications of Silicon Sulfide SiS2 Powder:
Silicon sulfide is a medium water and acid soluble source of silicon used for compatibility with sulfates. Sulfate is a sulfate or ester formed by replacing one or two hydrogens with a metal.
Storage Condition of Silicon Sulfide SiS2 Powder:
The damp reunion will affect SiS2 powder dispersion performance and using effects, therefore, Silicon Sulfide SiS2 Powder should be sealed in vacuum packing and stored in a cool and dry room, the Silicon Sulfide SiS2 Powder can not be exposure to air. In addition, the Silicon Sulfide SiS2 Powdershould be avoided under stress.
Packing & Shipping of Silicon Sulfide SiS2 Powder:
We have many different kinds of packing which depend on the Silicon Sulfide SiS2 Powder quantity.
Silicon Sulfide SiS2 Powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Silicon Sulfide SiS2 Powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Silicon Sulfide Properties |
Other Names | silicon(IV) sulfide, silicon disulfide, silicon(IV) sulphide, SiS2 powder |
CAS No. | 13759-10-9 |
Compound Formula | SiS2 |
Molecular Weight | 92.22 |
Appearance | White Powder |
Melting Point | 1090℃ |
Boiling Point | N/A |
Density | 1.85-2.02 g/cm3 |
Solubility in H2O | Decomposes |
Exact Mass | 91.921068 |
| |
| |
Silicon Sulfide Health & Safety Information |
Signal Word | Danger |
Hazard Statements | H261-H300-H315-H319-H335 |
Hazard Codes | F, T |
Risk Codes | N/A |
Safety Statements | N/A |
Transport Information | UN3134 4.3+6.1/PG II |
About Titanium Sulfide TiS2 Powder:Titanium disulfide is an inorganic compound with the molecular formula TiS2. Brassy scaly crystal, metallic luster.The density of 3.22 g/mL. Stable at room temperature, stable to water, dilute…
About Titanium Sulfide TiS2 Powder:
Titanium disulfide is an inorganic compound with the molecular formula TiS2. Brassy scaly crystal, metallic luster.The density of 3.22 g/mL. Stable at room temperature, stable to water, dilute sulfuric acid and hydrochloric acid, but nitric acid and concentrated sulfuric acid can make it decompose sulfur. The lithium can be interbedded between the titanium disulfide layers, and the composition of the inner cambium compound LiTiS2 varies continuously between x=0 and 1, so it is an ideal non-stoichiometric compound. Titanium disulfide is a yellow or gray powder with an unpleasant odor and is used as a solid lubricant. Contact with the substance may cause burns to the skin, eyes, and mucous membranes. It can be toxic by ingestion, inhalation or absorption through the skin.
Titanium disulfide has a layered structure, each of which consists of a sulfur-titanium-sulfur interlayer connected by a weak van der Waals force. Crystals can be grown from titanium wires heated in sulfur vapor or synthesized by the reaction of titanium tetrachloride and hydrogen sulfide. The lithium can be interbedded between the titanium disulfide layers, and the composition of the inner cambium compound LiTiS2 varies continuously between x=0 and 1, so it is an ideal non-stoichiometric compound.
Titanium disulfide is an inorganic compound with the molecular formula TiS2. A highly conductive golden yellow solid belonging to a group of compounds called transition metal halogens, the stoichiometric unit ME2.TiS2 is used as a cathode material in rechargeable batteries. Feel free to send an inquiry to get the latest price if you would like to buy Titanium Sulfide TiS2 Powder in bulk.
Titanium disulfide (TiS2)
Titanium disulfide Density: 3.22 g/ML
Titanium disulfide Molecular weight: 112
Titanium disulfide Purity: 99.95%
Titanium disulfide Specification: powder
Titanium disulfide CAS 2039-13-3
Titanium disulfide Packaging: vacuum bottle
Titanium disulfide Application: lithium battery, target material, scientific research, etc
Purity | Zn | Ag | Cu | Al | Mg | Fe | Bi | Sb | As |
99.99% | 5ppm | 2ppm | 5ppm | 5ppm | 5ppm | 5ppm | 5ppm | 5ppm | 5ppm |
How is Titanium Sulfide TiS2 Powder produced?
Titanium disulfide is prepared by the reaction of the elements around 500 °C.
Ti + 2 S → TiS2
It can be more easily synthesized from titanium tetrachloride, but this product is typically less pure than that obtained from the elements.
TiCl4 + 2 H2S → TiS2 + 4 HCl
This route has been applied to the formation of TiS2 films by chemical vapor deposition. Thiols and organic disulfides can be employed in place of hydrogen sulfide.
A variety of other titanium sulfides are known.
Applications of Titanium Sulfide TiS2 Powder:
The prospect of titanium disulfide as a cathode material for rechargeable batteries was proposed in 1973. Groups IV and V halogen compounds have attracted attention for their high electrical conductivity. The original described battery used a lithium anode and a titanium disulfide cathode. The energy density of the battery is high, the diffusion process of lithium ions to titanium disulfide cathode is reversible, and the battery can be charged.
Titanium disulfide was chosen because it is the lightest and cheapest chalcogenide.
Lithium-ion diffuses fastest in titanium disulfide.
The main problem is the degradation of the cathode after repeated use. This reversible insertion process allows the battery to charge. In addition, titanium disulfide is the lightest and cheapest of all the IV and V groups of layered dihalides.
In the 1990s, titanium disulfide was replaced by other cathode materials (manganese oxide and cobalt oxide) in most rechargeable batteries.
The use of TiS2 cathodes in solid-state lithium batteries most lithium-ion batteries use liquid electrolytes, which can pose safety concerns due to their flammability. A number of different solid electrolytes have been proposed to replace these hazardous liquid electrolytes.
For most solid-state batteries, high inter interface resistance reduces the reversibility of the intercalation process and shortens the service life. For TIS2, these undesirable interface effects are less of a problem. The power density of the all-solid-state lithium battery is 1000 W/kg and the maximum power density is 1500 W/kg in 50 cycles. In addition, the battery’s average capacity dropped by less than 10% in 50 cycles. Although titanium disulfide has high conductivity, high energy density and high power, its discharge voltage is relatively low compared to other lithium batteries with high reduction potential cathode.
Storage Condition of Titanium Sulfide TiS2 Powder:
The damp reunion will affect TiS2 powder dispersion performance and using effects, therefore, Titanium Sulfide TiS2 Powder should be sealed in vacuum packing and stored in cool and dry room, the Titanium Sulfide TiS2 Powder can not be exposure to air. In addition, the TiS2 powder should be avoided under stress.
Packing & Shipping of Titanium Sulfide TiS2 Powder:
We have many different kinds of packing which depend on the Titanium Sulfide TiS2 Powder quantity.
Titanium Sulfide TiS2 Powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Titanium Sulfide TiS2 Powder shipping: could be shipped out by sea, by air, by express, as soon as possible once payment receipt.
Titanium Sulfide Properties |
Other Names | titanium disulfide, titanium(IV) sulfide, titanium disulphide,
TiS2 powder |
CAS No. | 12039-13-3 |
Compound Formula | TiS2 |
Molecular Weight | 112 |
Appearance | Black Powder |
Melting Point | N/A |
Boiling Point | N/A |
Density | 3.22 g/cm3 |
Solubility in H2O | N/A |
Exact Mass | 111.892088 |
| |
| |
Titanium Sulfide Health & Safety Information |
Signal Word | Warning |
Hazard Statements | H252-H315-H319-H335 |
Hazard Codes | Xi |
Risk Codes | 36/37/38 |
Safety Statements | 26-37/39 |
Transport Information | UN 3174 4.2/PG 3 |
About Tungsten Disulfide WS2:Tungsten disulfide is an inorganic compound composed of tungsten and sulfur, with the chemical formula WS2. This compound is part of a group of materials called transition metal dihalides. It…
About Tungsten Disulfide WS2:
Tungsten disulfide is an inorganic compound composed of tungsten and sulfur, with the chemical formula WS2. This compound is part of a group of materials called transition metal dihalides. It naturally appears as a rare tungsten ore. This material is part of certain catalysts used for hydrodesulfurization and hydrodenitrogenation.
WS2 uses a layered structure similar to MoS2 or the same type of MoS2, instead of a coordination sphere with W atoms (instead of molybdenum atoms) in a triangular prism. Due to this layered structure, WS2 formed inorganic nanotubes, which were discovered after heating a thin sample of WS2 in 1992.
Most of the WS2 forms dark gray hexagonal crystals with a layered structure. Like the closely related MoS2, it has the characteristics of a dry lubricant.
Although people have long believed that WS2 is relatively stable in ambient air, recent reports on single-layer WS2 oxidation in the environment have found that this is not the case. WS2 is converted to tungsten oxide in a single layer form by a photooxidation reaction fairly quickly (within a few days in ambient light and atmosphere). The oxidation process includes visible wavelength light easily absorbed by the single-layer WS2 (
WS2 is also attacked by a mixture of nitric acid and hydrofluoric acid. When heated in an oxygen-containing atmosphere, WS2 is converted to tungsten trioxide. When heated in the absence of oxygen, WS2 will not melt but will decompose into tungsten and sulfur, but the decomposition temperature is only 1250°C.
Historically, the separation of monolayer WS2 used a chemical exfoliation method, that is, inserting lithium from n-butyl lithium (in hexane), and then stripping the inserted Li compound by ultrasonic treatment in water. WS2 is also shed by treatment with various reagents such as chlorosulfonic acid and lithium halide. Feel free to send an inquiry to get the latest price if you would like to buy tungsten disulfide WS2 powder in bulk.
Tungsten Disulfide details:
Tungsten Disulfide particle size: FSSS=0.4 to 0.7 μm, FSSS=0.85 to 1.15μm. 80nm
Tungsten Disulfide purity: 99.9%
W | S | Al | As | Cl | Cu | Fe | Ni | P | Si | O |
74.12 | 25.82 | 0.001 | 0.002 | 0.03 | 0.002 | 0.005 | 0.002 | 0.002 | 0.003 | 0.002 |
How is Tungsten Disulfide WS2 produced?
1. Roasting decomposition method:
Tungstic acid reacts with ammonia water under stirring at 57-60°C for 3 hours, and the heat preservation naturally settles for more than 16 hours. The generated ammonium tungstate reacts with hydrogen sulfide gas to generate ammonium tetrathiotungstate after high-temperature roasting and decomposition into tungsten disulfide.
H2WO4+2NH3·H2O→(NH4)2WO4+2H2O
(NH4)2WO4+4H2S→(NH4)2WS4+4H2O
2(NH4)2WS4+3O2→2WS2+4NH3+2S+2SO2+H2O
2. Tungsten reacts very slowly with liquid sulfur. WS2 can be formed by passing sulfur vapor to red hot tungsten. Tungsten is mixed with stoichiometric sulfur bloom and reacted in a nitrogen atmosphere at 800°C for 24 hours to form WS2, such as reacting at 6MPa and 1800°C to form orthorhombic WS2.
3. Using ammonium tetrathiotungstate as the raw material, heating and decomposing the ammonium tetrathiotungstate under the condition of isolating the air, the temperature rises from room temperature to 700-1200℃ with a temperature gradient of 100-200℃/hour during heating. After being kept at this temperature for 24 to 48 hours, it is then reduced to room temperature with a temperature gradient of 30 to 110°C/hour, and the material is discharged and crushed.
The preparation method of ultrafine scaly crystal tungsten disulfide used for lubricants has simple process equipment, does not pollute the environment, and is safe and reliable in operation, and can produce tungsten disulfide with stable quality, high purity, and ultrafine crystal structure of hexagonal crystal system.
Applications of Tungsten Disulfide WS2:
Tungsten disulfide (WS2) or tungsten disulfide is a very smooth dry film friction coating. The friction coefficient of WS2 is extremely low, 0.03, which is lower than PTFE, graphite or molybdenum disulfide (MoS2). Compared with many other WS2, it has unparalleled performance in terms of lubricity, non-stick, low friction, wears life and rated size. It has a wide range of applications in transistors, sensors, photocatalysis, electronic equipment, etc. Tungsten disulfide powder has good solubility in water and ethanol.
WS2 is an excellent release material for plastic molds, extrusion molds and other demolding applications.
WS2 can eliminate the need for hydraulic oil, or can be used with petrochemical oil, grease, synthetic oil, silicone valve and hydraulic oil. It has an affinity for the fluid layer and maintains the fluid layer. It helps to keep oil or grease on the surface, thereby further improving the lubrication effect.
When the thickness is less than 1 micron, small parts can be coated without tolerance problems.
WS2 is also a fairly inert and non-toxic material that has been used in medical equipment and food processing applications.
WS2 replaces customer base materials through high-speed processes at ambient temperature. It does not make the substrate continuous or warped.
WS2 can be used alone or combined with our PVD hard coating to improve durability.
Storage Condition of Tungsten Disulfide WS2 Powder:
Damp reunion will affect WS2 powder dispersion performance and using effects, therefore, Tungsten Disulfide WS2 Powder should be sealed in vacuum packing and stored in cool and dry room, the Tungsten Disulfide WS2 Powder can not be exposure to air. In addition, the WS2 powder should be avoided under stress.
Packing & Shipping of Tungsten Disulfide WS2 Powder:
We have many different kinds of packing which depends on the Tungsten Disulfide WS2 Powder quantity.
Tungsten Disulfide WS2 Powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Tungsten Disulfide WS2 Powder shipping:could be shipped out by sea , by air, by express?as soon as possible once payment receipt.
Tungsten Sulfide Properties |
Other Names | tungsten sulfide (WS2), tungsten disulphide,
tungsten(IV) sulfide, WS2 powder |
CAS No. | 12138-09-9 |
Compound Formula | WS2 |
Molecular Weight | 247.97 |
Appearance | Gray to Black Powder |
Melting Point | 1250 °C |
Boiling Point | N/A |
Density | 7.5 g/cm3 |
Solubility in H2O | N/A |
Exact Mass | 247.895074 |
| |
| |
Tungsten Sulfide Health & Safety Information |
Signal Word | Warning |
Hazard Statements | H315-H319-H335 |
Hazard Codes | Xi |
Risk Codes | 36/37/38 |
Safety Statements | 26-37/39 |
Transport Information | N/A |