Tellurium

Base Information

• Chemical Name: Tellurium
• CAS No.: 13494-80-9
• Deprecated CAS: 137322-20-4
• Molecular Formula: Te
• Molecular Weight: 129.616
• Hs Code.: 28045000
• European Community (EC) Number: 236-813-4,231-981-5
• ICSC Number: 0986
• UN Number: 1325
• UNII: NQA0O090ZJ,7F4735942K
• DSSTox Substance ID: DTXSID9032119,DTXSID20228446
• Wikipedia: Tellurium
• Wikidata: Q1100
• NCI Thesaurus Code: C95192
• Mol file: 13494-80-9.mol

Synonyms:Tellurium

Chemical Property of Tellurium

Chemical Property:

• Appearance/Colour: solid
• Vapor Pressure: 0Pa at 25℃
• Melting Point: 722.66 K,?449.51 °C,?841.12 °F
• Boiling Point: 1261 K,?988 °C,?1810 °F
• PSA: 0.00000
• Density: 6.24 g/cm³
• LogP: -0.15580
• Storage Temp.: Sealed in dry,Room Temperature
• Water Solubility.: insoluble H2O, benzene, CS2 [MER06]
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 129.9062227
• Heavy Atom Count: 1
• Complexity: 0

Purity/Quality:

99.99% ^*data from raw suppliers

Tellurium powder (99.9%) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): T
• Hazard Codes: T
• Statements: 25
• Safety Statements: 45-28A

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metalloid Compounds (Tellurium)
• Canonical SMILES: [Te]
• Recent EU Clinical Trials: Open, Blindly Evaluated, Prospective, Controlled, Randomized, Multicenter Phase III Clinical Trial to Compare Intra-individually the Efficacy and Tolerance of Oleogel-S10 versus Standard of Care in Accelerating the Wound Healing of Split-Thickness Skin Graft Donor Sites
• Inhalation Risk: Evaporation at 20 °C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
• Effects of Short Term Exposure: The aerosol is irritating to the eyes and respiratory tract. The substance may cause effects on the liver and central nervous system. Exposure could cause garlic-like breath. Medical observation is indicated.
• Uses: Small amounts of tellurium are added to stainless steel and copper to improve their machinability. It enhances the strength and hardness of lead and protects lead from the corrosive action of sulfuric acid. Tellurium also is a strong chilling agent in iron castings. It controls the chill and imparts a tough abrasion resistance to the surface. Tellurium is a curing agent for natural and synthetic rubber. It improves mechanical properties of the rubber imparting resistance to heat and abrasion. Tellurium is a coloring agent in glass, ceramics, and enamels. Traces of tellurium incorporated into platinum catalysts make the catalytic hydrogenation of nitric oxide favorable to forming hydroxylamine. A major application of tellurium is in semiconductor research. Tellurides of lead and bismuth are used in thermoelectric devices for power generation and refrigeration. Tellurium is a common constituent of ores that contain silver, gold, lead, antimony, and bismuth, and it is often present in small amounts in coal. Tellurium is widely used in metallurgy because it improves the properties of copper, tin, lead-based alloys, steel, and cast iron. It is used in rubber manufacturing to increase heat resistance and to retard the aging of rubber hoses and cable coatings. Small amounts are used in the electronics industry for lasers and photoreceptors. Tellurium is not an essential micronutrient; therefore, it is not found in nutritional supplements. As coloring agent in chinaware, porcelains, enamels, glass; reagent in producing black finish on silverware; in manufacture of special alloys of marked electrical resistance; in semiconductor research. Tellurium’s major use is as an alloy with copper and stainless steel. It makes these metalseasier to machine and mill (cut on a lathe). It is also used as a vulcanizing agent in the productionof rubber, as a coloring agent for glass and ceramics, and for thermoelectrical devices.Along with lithium, it is used to make special batteries for spacecraft and infrared lamps.Tellurium can be used as a p-type semiconductor, but more efficient elements can do a betterjob. It is also used as a depilatory, which removes hair from skin.Although tellurium forms many compounds, most of them have little commercial value. The metal is used in vulcanizing rubber, instorage batteries, and as a coloring agent inceramics. It is also used as an additive toiron, steel, and copper. Many tellurium saltsfind application on semiconductors.
• Description: Tellurium is one of the rarest elements on earth similar to selenium, and was discovered in Transylvania in 1782 by Franz-Joseph Muller von Reichenstein. The name derived from the Latin word for earth. Tellurium is occasionally found naturally, more often as telluride of gold, calaverite.
• Physical properties: Tellurium is a silver-white, brittle crystal with a metallic luster and has semiconductorcharacteristics. It is a metalloid that shares properties with both metals and nonmetals, andit has some properties similar to selenium and sulfur, located just above it in group 16 of theperiodic table.There are two allotropic forms of tellurium: (1) the crystalline form that has a silvery metallicappearance and a density of 6.24 g/cm3, a melting point of 499.51°C, and a boiling point of988°C; and (2) the amorphous allotrope that is brown in color and has a density of 6.015g/cm3and ranges for the melting and boiling point temperatures similar to the crystalline form.

Technology Process of Tellurium

There total 89 articles about Tellurium which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 100.0%

tellurium (14683-12-6) + hydrogen → hydrogen telluride (13494-80-9,7783-09-7)

Guidance literature:

In gas; other Radiation; Laser thermochemical synthesis of gaseous TeH2 from gaseous H and Te atoms.;

Reference yield: 80.0%

aluminum telluride → hydrogen telluride (13494-80-9,7783-09-7)

Guidance literature:

In hydrogenchloride; addn. of pure Al2Te3 (from Te vapor and heated Al) into excess of 4n HCl soln. free of air in special app. under exclusion of O2, moisture and light; gas with 40% H2Te;;

Reference yield: 8.3%

magnesium telluride + hydrogen cation → hydrogen telluride (13494-80-9,7783-09-7)

Guidance literature:

In not given; byproducts: H2; reactn. with acids;;

upstream raw materials:

sulfuric acid

Te(VI)

tellurium(IV) oxide

tellurium

Downstream raw materials:

tellurium

vanadium

tellurium tetrachloride

platinum

Refernces

3,4-DICHALCOGEN-BRIDGED FLUORANTHENES AS NEW ELECTRON DONORS

10.1016/S0040-4039(00)84435-4

The research aimed to develop new electron donors by synthesizing three 3,4-dichalcogen-bridged fluoranthenes, with the donor strength increasing in the order of the chalcogen triad: sulfur, selenium, and tellurium. The study focused on polycyclic aromatic compounds with peri-dichalcogen bridges, which are known for their electron-donating properties. The researchers synthesized fluorantheno[3,4-cdl-1,2-dithiole], -diselenole, and -ditellurole, using a multistage pathway starting with acenaphthene and involving various chemical reactions such as chlorination, dehydrogenation, bromination, and Diels-Alder reactions. The synthesized compounds were characterized by elemental and spectroscopic analyses, and their electronic spectra and cyclic voltammetry results indicated an enhanced electronic interaction between the fluoranthene and the heavy chalcogen, which strengthened the donor character.

Post a RFQ

Cas No.:

Product Name:

Quantity:

Please select Metric Ton KG G Pound L ML

Email:

Company name:

Valid Period:

Detailed Requirements:

• Sample
• MOQ
• GMP
• FDA
• Price
  FOB CIF CFR EXW
• Urgent purchase

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

Remove

Submit

1

What can I do for you?
Get Best Price

Get Best Price for 13494-80-9 Tellurium

Send

Send

Metric Ton KG G Pound L ML

Send

Send