Tungsten disulfide: gray, hexagonal system, semiconductor and diamagnetic. It has very low friction coefficient (0.03), high extreme pressure resistance and oxidation resistance (decomposition starts at 450 ℃ in air, It is suitable for high temperature, high pressure, high vacuum, high load, high speed, high radiation, strong corrosion, ultra-low temperature and other harsh conditions. 1. It has good adsorption ability to metal surface. It can be added in engineering plastics to make lubricating elements or mixed with some volatile solvents evenly, and then sprayed on the metal surface. It can be used in stamping forging to improve the service life of the die and the surface finish of the workpiece. 2. Tungsten disulfide powder can be combined with oil and lipid to form tungsten disulfide oil agent, tungsten disulfide paste, tungsten disulfide wax and other solid lubricating blocks and films. Tungsten(IV) sulfide is the chemical compound with the formula WS2. It occurs naturally as the rare mineral called tungstenite. This material is a component of certain catalysts used for hydrodesulfurization and hydrodenitrification. WS2 adopts a layered structure related to MoS2, with W atoms situated in trigonal prismatic coordination sphere. WS2 nanoparticles is a very good performance of new solid lubricant materials, not only for general lubrication, also it can be used in the work environment of high temperature, high pressure, high vacuum, high load and with radiation and corrosive media; WS2 cluster within the cluster produce magnetic alignment, lubrication process can be better adsorbed on the metal surface to form a layer of nano protective lubricating film; WS2 has a very small friction coefficient (about 0.03), therefore it can be used as additives in the metal powder to obtain a stable friction coefficient; nanoscale WS2 has good resistance to oxidation, it can be used as additives to lubricating oil (grease) effectively to improve lubricants (grease) and extreme pressure properties and antiwear properties; Adding nanoscale WS2 In the casting process can make cast metal have a certain self-lubricating properties and have an excellent adsorption capacity on the metal surface. 1. WS2 nanoparticles is mainly used for oil catalysts; 2. WS2 nanoparticles is a new highly efficient catalyst; 3. WS2 nanoparticles can be used as solid lubricants, dry film lubricants, self-lubricating composite materials; 4. WS2 nanoparticles is to create high-performance lubricant additives; 5. WS2 nanoparticle can be used as fuel cells of the anode, organic electrolyte battery anode, the oxidation of sulfur dioxide in strong acid in the anode and the anode sensor; 6. WS2 nanoparticle is used to make nano-ceramic composites; 7. WS2 nanoparticle is a good semiconductor material. Specifications of Tungsten Disulfide powder Tungsten Disulfide powder Purity >99.9% Tungsten Disulfide powder Size Fsss＝0.4～0.7μm   Fsss=0.85～1.15μm   Fsss=90nm CAS No. 12138-09-9 EINECS No. 235-243-3 Tungsten Disulfide powder MOQ 1kg Tungsten Disulfide powder Density 7.5 g/cm3 Tungsten Disulfide powder SSA 80 m2/g D50 3um or 8um * In addition：The company could research and develop the new products according to the special demand of our clients． Product WS2 Appearance Gray-black powder Production date 2024-08-06 Batch number 2024080601 Net weight 500 KG Standard Q/Theorem 001-2022   Inspection Items Specification Results of Inspection Composition content, wt% WS2(W 计) ≥99.90 99.95 W(In WS2) 73.77-74.27 74.201       Impurity content, wt% Fe ≤0.0030 0.0016 Cd ≤0.0020 ≤0.0005 Cu ≤0.0030 0.0008 Mg ≤0.0020 0.0008 Mo ≤0.0020 0.0009 Pb ≤0.0020 ≤0.0005 Free of TS, wt% ≤0.0300 0.0158 H2O ≤0.100 0.0262  D50 (um) 9.671 Inspection Results In accordance with the above test basis, the items seized qualified. No. CAS NO. Chemical Name 1. 13499-05-3 Hafnium(IV) chloride 2. 13637-68-8 Molybdenum dichloride dioxide / MoO2Cl2 3. 7721-01-9 Tantalum(V) chloride / TaCl5 4. 10026-12-7 Niobium(V) Chloride / NbCl5 5. 10241-05-1 Molybdenum(V) chloride / MoCl5 6. 16925-25-0 Sodium Hexafluoroantimonate 7. 13283-01-7 Tungsten Chloride WCl6 8. 1345-07-9 Bismuth(III) Sulfide / Bi2S3 9. 1315-01-1 Tin Disulphide / SnS2 10. 1314-95-0 Tin sulfide / SnS 11. 1317-33-5 Molybdenum Disulfide / MoS2 12. 1317-33-5 Nano Molybdenum Disulfide / MoS2 13. 12138-09-9 Tungsten Disulfide / WS2 14. 12138-09-9 Nano Tungsten Disulfide / WS2 15. ... www.theoremchem.com