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:

2-[4-(4-chlorobenzenesulfinyl)phenyl]-1H-benzimidazole-5-carboxylic acid

tellurite^(2-)

tellurium tetrachloride

tellurous acid