Products
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Barium Acetate 99.5% Cas 543-80-6
Barium acetate is the salt of barium(II) and acetic acid with a chemical formula Ba(C2H3O2)2. It is a white powder that is highly soluble in water, and decomposes to Barium oxide on heating. Barium acetate has a role as a mordant and a catalyst. Acetates are excellent precursors for production of ultra high purity compounds, catalysts, and nanoscale materials.
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Sodium Pyroantimonate (C5H4Na3O6Sb) Sb2O5 Assay 64%~65.6% be used as flame retardant
Sodium Pyroantimonate is an inorganic salt compound of antimony, which is produced from antimony products such as antimony oxide through alkali and hydrogen peroxide. There are granular crystal and equiaxed crystal. It has good chemical stability.
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Cesium Tungsten Bronzes(Cs0.32WO3) Assay Min.99.5% Cas 189619-69-0
Cesium Tungsten Bronzes(Cs0.32WO3) is a near-infrared absorbing nano material with uniform particles and good dispersion. Cs0.32WO3 has excellent near-infrared shielding performance and high visible light transmittance. It has strong absorption in the near-infrared region (wavelength 800-1200nm) and high transmittance in the visible light region (wavelength 380-780nm). We have the successful synthesis of highly crystalline and high purity Cs0.32WO3 nanoparticles through a spray pyrolysis route. Using sodium tungstate and cesium carbonate as raw materials, cesium tungsten bronze (CsxWO3) powders were synthesized by low temperature hydrothermal reaction with citric acid as the reducing agent.
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Sodium Antimonate (NaSbO3) Cas 15432-85-6 Sb2O5 Assay Min.82.4%
Sodium Antimonate (NaSbO3) is a kind of inorganic salt, and also called sodium metaantimonate. White powder with granular and equiaxed crystals. High temperature resistance, still does not decompose at 1000 ℃. Insoluble in cold water, hydrolyzed in hot water to form colloid.
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Antimony Pentoxide colloidal Sb2O5 widely used as flame retardant additive
Colloidal Antimony Pentoxide is made through a simple method based on reflux oxidization system. UrbanMines has detailedly investigated about the effects of experimental parameters on the colloid stability and size distribution of the final products are carried out. We specialize in offering colloidal antimony pentoxide in a wide range of grades developed for specific applications. The particle size ranges from 0.01-0.03nm up to 5nm.
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Ethylene Glycol Antimony
Ethylene glycol antimony is a new, high‑efficiency catalyst for polyester polycondensation. Compared with traditional catalysts (antimony trioxide, antimony acetate), it offers distinct core advantages:
Superior solubility and dispersibility
It exhibits significantly higher solubility in ethylene glycol and disperses uniformly. This effectively prevents catalyst agglomeration, ensures a stable reaction system, and minimizes dead zones.
Higher catalytic activity
With a high antimony content and strong catalytic activity, it notably accelerates polyester polycondensation, shortens reaction cycles, increases plant capacity and productivity, and reduces production costs.
Enhanced product quality
High purity prevents introduction of additional impurities into the reaction system. It improves the intrinsic quality of polyester chips, enhances spinnability, streamlines downstream spinning processes, and delivers fibers with superior strength and toughness.
Developed and customized by UrbanMines, ethylene glycol antimony features stable physicochemical properties, high catalytic efficiency, and significant quality improvement. It has become the preferred catalyst for polyester process upgrades and is suitable for all polyester polycondensation applications. -
Hafnium Tetrachloride
Hafnium Tetrachloride (HfCl₄) is a high-value inorganic compound widely employed as a precursor in the synthesis of advanced high-temperature ceramics, phosphor materials for high-power light-emitting diodes (LEDs), and heterogeneous catalysts. Notably, it exhibits exceptional Lewis acidity, rendering it highly effective in olefin polymerization and diverse organic transformations. Driven by expanding applications in semiconductor manufacturing, aerospace engineering, and next-generation electronic materials, global demand for HfCl₄ has demonstrated sustained growth. However, its industrial-scale production remains technically demanding—requiring stringent process control, ultra-high-purity feedstocks, and compliance with rigorous environmental, health, and safety (EHS) regulations. Given its pivotal role in enabling high-performance functional materials and specialty catalysts, HfCl₄ is increasingly recognized as a strategic raw material for advanced materials science and fine chemical synthesis.
Hafnium, 72Hf Appearance Steel gray Atomic number (Z) 72 Phase at STP Solid Melting point 2506 K (2233℃, 4051 ℉) Boiling point 4876 K (4603 ℃, 8317 ℃) Density (at 20℃) 13.281 g/cm3 When liquid (at m.p.) 12 g/cm3 Heat of fusion 27.2 kJ/mol Heat of vaporization 648 kJ/mol Molar heat capacity 25.73 J/(mol·K) Specific heat capacity 144.154 J/(kg·K) Enterprise Standard of 5N Purity Grade Hafnium Tetrachloride
Symbol Li 7 (ppb) Be 9 (ppb) Na 23 (ppb) Mg 24 (ppb) Al 27 (ppb) K 39 (ppb) Ca 40 (ppb) V 51 (ppb) Cr 52 (ppb) Mn 55 (ppb) Fe 56 (ppb) Co 59 (ppb) Ni 60 (ppb) Cu 63 (ppb) Zn 66 (ppb) Ga 69 (ppb) Ge 74 (ppb) Sr 87 (ppb) UMHT5N 0.371 2.056 17.575 6.786 87.888 31.963 66.976 0.000 74.184 34.945 1413.776 21.639 216.953 2.194 20.241 12.567 8.769 3846.227 Zr 90 (ppb) Nb 93 (ppb) Mo98 (ppb) Pd106 (ppb) Ag 107 (ppb) As 108 (ppb) Cd 111 (ppb) In 115 (ppb) Sn 118 (ppb) Sb 121 (ppb) Ti131 (ppb) Ba 138 (ppb) W 184 (ppb) Au -2197 (ppb) Hg 202 (ppb) Tl 205 (ppb) Pb 208 (ppb) Bi 209 (ppb) 41997.655 8.489 181.362 270.662 40.536 49.165 5.442 0.127 26.237 1.959 72.198 0.776 121.391 1707.062 68.734 0.926 14.582 36.176 Comment: The above parameters were detected by ICP-MS.
Hafnium tetrachloride (HfCl₄) is a colorless, crystalline solid with a molecular weight of 320.30 g/mol and CAS Registry Number 13499-05-3. It melts at 320 °C and undergoes sublimation at approximately 317 °C under ambient pressure. The compound is extremely hygroscopic and reacts exothermically and vigorously with moisture, necessitating storage under anhydrous, inert atmospheric conditions (e.g., argon or nitrogen) in tightly sealed containers. Due to its strong corrosivity, direct contact with skin or eyes may result in severe chemical burns. As a Class 8 corrosive hazardous substance (UN2509), handling requires appropriate personal protective equipment (PPE), including chemical-resistant gloves, goggles, and respiratory protection where dust generation is possible.
What is Hafnium Tetrachloride used for?
Hafnium tetrachloride (HfCl₄) is a versatile inorganic compound that, owing to its unique chemical properties, finds extensive applications in numerous high-tech fields:
- Semiconductors and Electronic Materials: It serves as a key precursor for preparing high-dielectric-constant materials (such as hafnium dioxide), used in transistor gate insulating layers to significantly enhance chip performance. It is also widely employed in chemical vapor deposition (CVD) processes to deposit metallic hafnium or hafnium compound thin films, applied in high-performance transistors, memory devices, etc.
- Ultra-High Temperature Ceramics and Aerospace: Used in the manufacture of ultra-high temperature ceramic materials, which exhibit excellent high-temperature resistance, wear resistance, and corrosion resistance. These ceramics are suitable for extreme environments such as aircraft engine hot sections and rocket nozzles. Additionally, it can be used in high-power LED packaging materials to improve device heat dissipation and lifespan.
- Catalysis and Organic Synthesis: As an efficient Lewis acid catalyst, it promotes reactions such as olefin polymerization (e.g., as a precursor for Ziegler-Natta catalysts), esterification of alcohols and acids, acylation, and 1,3-dipolar cycloadditions, enhancing reaction rates and selectivity. It is also utilized in fine chemical synthesis of fragrances and pharmaceuticals.
- Nuclear Industry: Leveraging its good thermal and chemical stability, it is applied in nuclear reactor cooling systems and as coating materials for nuclear fuels, improving corrosion resistance and thermal stability.
- Energy Sector: Used as a raw material for synthesizing solid electrolyte materials like lithium hafnium phosphate for developing high ionic conductivity lithium batteries. It also serves as a precursor for high-capacity cathode materials in lithium and sodium-ion batteries.
- Zirconium-Hafnium Separation: Exploiting the difference in volatility between zirconium tetrachloride and hafnium tetrachloride, they can be efficiently separated via fractional distillation or gas chromatography. This is an important industrial method for obtaining pure hafnium.
In summary, hafnium tetrachloride plays an irreplaceable role in semiconductors, advanced materials, catalysis, nuclear energy, and new energy sectors, establishing itself as a core raw material in modern high-tech industries.
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Trimethylaluminum(TMAI)
Trimethylaluminum (TMAI) is a critical raw material for the production of other metal-organic sources utilized in atomic layer deposition (ALD) and chemical vapor deposition (CVD) processes.
Trimethylaluminum represents one of the simplest organoaluminum compounds. Although its name suggests a monomeric structure, it actually has the formula Al2(CH3)6 (abbreviated as Al2Me6 or TMAI), existing as a dimer. This colorless liquid is pyrophoric and plays an industrially significant role, closely related to triethylaluminum.
UrbanMines ranks among the leading suppliers of Trimethylaluminum (TMAI) in China. Leveraging our advanced production techniques, we offer TMAI with varying levels of purity, tailored specifically for applications in the semiconductor, solar cell, and LED industries.
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Nickel(II) carbonate(Nickel Carbonate)(Ni Assay Min.40%) Cas 3333-67-3
Nickel Carbonate is a light green crystalline substance, which is a water insoluble Nickel source that can easily be converted to other Nickel compounds, such as the oxide by heating (calcination).
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Industrial Grade/Battery Grade/Micropowder Battery Grade Lithium
Lithium Hydroxide is an inorganic compound with the formula LiOH.The overall chemical properties of LiOH are relatively mild and somewhat similar to alkaline earth hydroxides than other alkaline hydroxides.
Lithium hydroxide, solution appears as a clear to water-white liquid which may have a pungent odor. Contact may cause severe irritation to skin, eyes, and mucous membranes.
It can exist as anhydrous or hydrated, and both forms are white hygroscopic solids. They are soluble in water and slightly soluble in ethanol. Both are available commercially. While classified as a strong base, lithium hydroxide is the weakest known alkali metal hydroxide.
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High Purity Tellurium Dioxide Powder(TeO2) Assay Min.99.9%
Tellurium Dioxide, has the symbol TeO2 is a solid oxide of tellurium. It is encountered in two different forms, the yellow orthorhombic mineral tellurite, ß-TeO2, and the synthetic, colourless tetragonal (paratellurite), a-TeO2.
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Nickel(II) oxide powder (Ni Assay Min.78%) CAS 1313-99-1
Nickel(II) Oxide, also named Nickel Monoxide, is the principal oxide of nickel with the formula NiO. As a highly insoluble thermally stable Nickel source suitable, Nickel Monoxide is soluble in acids and ammonium hydroxide and insoluble in water and caustic solutions. It is an inorganic compound used in electronics, ceramics, steel and alloy industries.