This is Tungsten dioxide. Molecular formula: WS2 molecular mass 247.97. This product can be found in the hexagonal system. Purity: 99.9% Sizes of partilcles are 70-300nm

About Tungsten Disulfide WS2:
Tungsten disulfide This organic compound is made up of tungsten and sulfur as well as other elements. Tungsten disulfide chemical formula It is WS2 . It is part of the group of transition metal dihalides. This is the most rare form of tungsten. This material is part of certain catalysts used for hydrodesulfurization and hydrodenitrogenation.
WS2 tungsten disulfide This layered structure is similar to MoS2 (or a type like MoS2), and replaces the coordinationsphere with Watoms (instead of molybdenum–atoms), within a triangular prism. After it was heated in 1992 this layer structure allowed for the formation inorganic Nanotubes in W2
Most WS2 crystals appear dark gray and hexagonal, with layered appearance. Like its close-related MoS2, it's a dry oillubricant.
Many thought that WS2 would be stable in the presence of ambient oxygen. Studies on single-layer, environment-dependent WS2 oxidation have revealed that the contrary is true. Photooxidation converts WS2 rapidly to tungstenoxide within a single layer. The photooxidation reaction takes place under ambient conditions and atmospheric conditions. One-layer of WS2 absorbs visible wavelength light (660nm/>1.88eV), and oxidizes. You will require water and oxygen to proceed with this reaction. The products of the reaction are tungsten oxide and sulfuric acid. Similar results were seen for semiconductor transitional metallic dihalides such as MoS2 under atmospheric light.
The combination of hydrofluoric acids and nitric can cause WS2 to be attacked. In oxygen-containing environments, WS2 may turn into tungsten dioxide if heated. But, without oxygen, WS2 doesn't melt, but will decompose into tungsten trioxide. The temperature at which WS2 will decompose is 1250oC.
A chemical exfoliation process has been used historically to remove monolayer WS2. It involves inserting lithium (in Hexane), into n–butyl and then treating the Li compound using ultrasonics. The removal of WS2 can be achieved by treatment with different agents like lithium halide and chlorosulfonic acid.

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Tungsten Disulfide details:
Tungsten Dioxide particle sizes: FSSS=0.4 to 0.7 mm; FSSS=0.85-1.15 mm. 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

It's simple. Tungsten Disulfide WS2 produced?
1. Roasting decomposition method:
The mixture is stirred for three hours at 57-60degC. Heat preservation can last for more than 16 hours. Hydrogen sulfide gases react with ammonium to form ammonium-tungstate. This creates ammonium Tetrathiotungstate which, after being heated to a high temperature, can be converted into tungsten oxide.
H2WO4+2NH3*H2O-(NH4)2WO4+2H2O
(NH4)2WO4+4H2S-(NH4)2WS4+4H2O
2(NH4)2WS4+3O2-2WS2+4NH3+2S+2SO2+H2O
2. Tungsten can take a long time to react with liquid sulf. To make WS2, you can change the color of sulfur vapor to red hot. You can create WS2 by mixing tungsten with an stoichiometric sulfur flower. To make orthorhombic forms, it can be react at 1600pa or 600pa.
3. By heating the ammonium-tetrathiotungstate and decomposing it, under the condition that the air is isolated, the temperature increases from room to 700 to 1200. After being kept at the temperature for between 24-48 hours it is reduced to room temperature with a temperature gradient between 30-110degC/hour. It is then crushed and released.
This is a simple method to make ultrafine, scaley, tungsten oxide. It doesn't pollute our environment.

Applicaciones Tungsten Disulfide WS2:
Tungsten disulfide Here's how to make it happen tungsten disulfide lubricant, tungsten disulfide grease.
Tungsten Disulfide 2 WS2 is a film friction coating that's extremely dry and smooth. At 0.03, the friction coefficient for Tungsten Disulfide WS2 makes it much more efficient than graphite(PTFE), graphite [MoS2], and graphite (“MoS2”). This material has remarkable lubricity. This can be used to make electronic equipment, such as transistors and sensors. The powder of tungsten dioxide is easily soluble with water and alcohol.
Extrusion moulds, plastic molds, and any other type of molding use WS2.
It is no longer necessary to use hydraulic oil. You can mix it with synthetic oil or grease. By being an affinity with fluid layers it can retain them. It helps keep oil and grease from the surface. This increases the level of lubrication.
For small parts, tolerances are possible if they have a thickness below 1 micron.
Also, WS2 may be used to process food and for medical equipment.
WS2 replaces customer base materials at ambient temperatures. It does not result in the substrate becoming warped, or continuous.
You can combine WS2 with PVD Hard Coating for greater durability.

Tungsten Disulfide Powder Storage Conditions:
Tungsten Dioxidide powder should never be left in the air. Damp reunion may affect the dispersion performance and use of WS2 Powder. Stress must also be avoided when using WS2 Powder.

Packing and Shipping Tungsten Disulfide WS2 Pulver:
There are many packaging options available depending on how big the Tungsten Dioxide W2 Powder is.
Tungsten Disulfide Pulver Packaging:vacuum packing, 100g to500g, 1kg/bag @ 25kg/barrel Other options available upon request.
Tungsten diulfide powder shipping: could ship by sea or air once the payment receipt has been received.


Nanotechnology Co. Ltd., a worldwide trusted manufacturer and supplier of top-quality chemical material is known for their expertise in the production of Nanomaterials. It includes graphite and boride as well as sulfide, boride, nitride and graphite.
What you need is high-quality goods tungsten disulfide powder For any enquiry, please feel free to reach out. ( brad@ihpa.net )

Tungsten Sulfide Properties
Its Other Titles	tungsten sulfide (WS2), tungsten disulphide, tungsten(IV) sulfide, WS2 powder
	12138-09-9
Compound Formula	WS2
Motility	247.97
Appearance	Black powder or gray powder
Melting Point	1250 degC
Boiling Point	N/A
Density	7.5 g/cm3
Solubility H2O	N/A
Exact	247.895074
Tungsten Sulfide Health & Safety Information
	Alert
Hazard Statements	H315-H319-H335
Hazard Codes	Xi
Risk Codes	36/37/38
Security statements	26-37/39
Transport Information	N/A

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