Tellurium dioxide

Base Information

• Chemical Name: Tellurium dioxide
• CAS No.: 7446-07-3
• Molecular Formula: TeO2
• Molecular Weight: 159.599
• Hs Code.: 28112900
• European Community (EC) Number: 231-193-1
• NSC Number: 8956
• UNII: 397E9RKE83
• DSSTox Substance ID: DTXSID8052487
• Nikkaji Number: J95.286I
• Wikipedia: Tellurium(IV) oxide,Tellurium dioxide,Tellurium_dioxide
• Wikidata: Q425220
• Mol file: 7446-07-3.mol

Synonyms:tellurium dioxide

Chemical Property of Tellurium dioxide

Chemical Property:

• Appearance/Colour: white crystalline powder
• Vapor Pressure: 0Pa at 25℃
• Melting Point: 733 °C(lit.)
• Boiling Point: 1245 °C
• PSA: 34.14000
• Density: 5.67g/mLat 25°C(lit.)
• LogP: -0.61840
• Storage Temp.: Storage temperature: no restrictions.
• Water Solubility.: insoluble
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 2
• Rotatable Bond Count: 0
• Exact Mass: 161.8960520
• Heavy Atom Count: 3
• Complexity: 18.3

Purity/Quality:

99.9% -99.999%, ^*data from raw suppliers

Tellurium(IV) Oxide >98.0%(W) ^*data from reagent suppliers

Safty Information:

• Safety Statements: 24/25

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Chemical Classes: Metals -> Metalloid Compounds (Tellurium)
• Canonical SMILES: O=[Te]=O
• Physical properties: White crystals; dimorphic; exists in tetragonal and orthorhombic forms; density 5.75 g/cm3 (tetragonal), 6.04 g/cm3 (orthorhombic); melts at 733°C forming a deep yellow liquid; vaporizes at 1,245°C; insoluble in water; soluble in acids and alkalies.
• Uses: Tellurium dioxide is also used in devices which can convert light into sound (acousto-optic material). Glasses made of tellurium oxide have high refractive indices and transmit into mid-IR region. It is used to make glasses with special properties. It is useful in optical waveguides and optical fiber amplification. Tellurium dioxide is used to prepare tellurium metal, telluric acid, and many tellurium salts. It may also be used in the preparation of Ag2Te nanoparticles. TeO2 can be potentially used in medical imaging and industrial monitoring processes.

Technology Process of Tellurium dioxide

There total 282 articles about Tellurium dioxide 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: 27.6%

SbTeO3Br + oxygen (80937-33-3) → paratellurite (7446-07-3) + antimony orthoantimonate + tellurium(IV) tetrabromide (10031-27-3)

Guidance literature:

thermolyse at 950°C;

Reference yield:

tellurium (14683-12-6) → tellurium(IV) oxide (7446-07-3) + tellurium tetrachloride (10026-07-0)

Guidance literature:

With aqua regia; In further solvent(s); with aqua regia;;

Reference yield:

tellurium (14683-12-6) + oxygen (80937-33-3) → tellurium(IV) oxide (7446-07-3) + tellurium monoxide (13451-17-7) + TeTeOO + (TeO2)2 (149081-89-0) + tellurium oxide (13451-18-8)

Guidance literature:

In solid matrix; other Radiation; laser ablation of Te using Nd:YAG laser in the presence of O2 in Ar matrix - other products TeOTe, cyclic-TeTeO and O3; identified by IR;

DOI:10.1016/j.molstruc.2007.06.021

upstream raw materials:

tellurium dichloride

dinitrogen tetraoxide

cerium telluride

water

Downstream raw materials:

tellurite^(2-)

tellurium tetrachloride

tellurous acid

telluric acid dihydrate

Refernces

• 1、 Forzatti, P.,Tieghi, G.. "". . p. 387 - 390. Retrieved 1978.
• 2、 Ok, Kang Min,Shiv Halasyamani. "Synthesis, structure, and characterization of a new one-dimensional tellurite phosphate, Ba2TeO(PO4)2". . p. 1345 - 1350. Retrieved 2006.
• 3、 Castro, Alicia,Jerez, Antonio,Pico, Carlos,Veiga, Maria Luisa. "Preparation and Characterization of Mixed Oxides of Selenium and Tellurium". . p. 733 - 736. Retrieved 1982.
• 4、 Ijjaali, Ismail,Flaschenriem, Christine,Ibers, James A.. "Synthesis and characterization of the wide band-gap compound Pr2Te4O11". . p. 115 - 119. Retrieved 2003.
• 5、 Jiang, Zhi-Yuan,Xie, Zhao-Xiong,Zhang, Xian-Hua,Xie, Su-Yuan,Huang, Rong-Bin,Zheng, Lan-Sun. "Synthesis of α-tellurium dioxide nanorods from elemental tellurium by laser ablation". . p. 179 - 181. Retrieved 2004.
• 6、 Mirgorodsky,Merle-Méjean,Thomas,Champarnaud-Mesjard,Frit. "Dynamics and crystal chemistry of tellurites - 1. Raman spectra of thallium tellurites: Tl2TeO3, Tl2Te2O5 and Tl2Te3O7". . p. 545 - 554. Retrieved 2002.
• 7、 Porter, Yetta,Halasyamani, P. Shiv. "Syntheses, structures, and characterization of new lead(II)-tellurium(IV)-oxide halides: Pb3Te2O6X2 and Pb3TeO4X2 (X = Cl or Br)". . p. 205 - 209. Retrieved 2003.
• 8、 Konings, R. J. M.,Cordfunke, E. H. P.,Booij, A. S.. "". . p. 499 - 502. Retrieved 1990.
• 9、 Mallika, C.,Sreedharan, O. M.. "Thermodynamic stabilities of TeO2 and Sb2Te3 by a solid-oxide electrolyte e.m.f. technique". . p. 727 - 734. Retrieved 1986.
• 10、 Udovic,Thomas,Mirgorodsky,Durand,Soulis,Masson,Merle-Mejean,Champarnaud-Mesjard. "Thermal characteristics, Raman spectra and structural properties of new tellurite glasses within the Bi2O3-TiO2-TeO2 system". . p. 3252 - 3259. Retrieved 2006.