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Tellurium dioxide

Tellurium dioxide Structure
Tellurium dioxide structure
CAS No.
7446-07-3
Chemical Name:
Tellurium dioxide
Synonyms
TeO2;TelluriumDiox;TELLERIUM OXIDE;Tellurium dioxide;TELLURIUM(+4)OXIDE;TELLURIUM(IV) OXIDE;Tellurous anhydride;telluriumoxide(teo2);Tellurium(IV)dioxide;Tellurium oxide, 99%+
CBNumber:
CB1670143
Molecular Formula:
O2Te
Lewis structure
teo2 lewis structure
Molecular Weight:
159.6
MDL Number:
MFCD00011263
MOL File:
7446-07-3.mol
MSDS File:
SDS
Last updated:2024-11-13 18:13:23
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Tellurium dioxide Properties

Melting point 733 °C (lit.)
Boiling point 1245 °C
Density 5.67 g/mL at 25 °C (lit.)
vapor pressure 0Pa at 25℃
storage temp. no restrictions.
solubility insoluble in H2O; soluble in alkaline solutions, acid solutions
form Powder
color White to slightly yellow
Specific Gravity 5.8
Water Solubility insoluble
λmax 360nm(neat)(lit.)
Merck 14,9123
crystal system square
Space group P41212
Lattice constant
a/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.481220.481220.761579090900.1764
Exposure limits ACGIH: TWA 0.1 mg/m3
NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3
Stability Stable. Incompatible with strong acids, strong oxidizing agents.
CAS DataBase Reference 7446-07-3(CAS DataBase Reference)
EWG's Food Scores 1
FDA UNII 397E9RKE83
NIST Chemistry Reference tellurium(IV) dioxide(7446-07-3)
EPA Substance Registry System Tellurium oxide (TeO2) (7446-07-3)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
GHS07,GHS08,GHS09
Signal word  Danger
Hazard statements  H317-H332-H360D-H411
Precautionary statements  P202-P273-P280-P302+P352-P304+P340+P312-P308+P313
Safety Statements  24/25
RIDADR  UN 3284 6.1/PG 3
WGK Germany  2
RTECS  WY2675000
TSCA  Yes
HazardClass  6.1(a)
PackingGroup  II
HS Code  28112900
Toxicity LD50 orally in Rabbit: > 2000 mg/kg
NFPA 704
0
2 0

Tellurium dioxide price More Price(42)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 204552 Tellurium dioxide 99.995% trace metals basis 7446-07-3 10g $108 2024-03-01 Buy
Sigma-Aldrich 204552 Tellurium dioxide 99.995% trace metals basis 7446-07-3 50g $358 2024-03-01 Buy
Sigma-Aldrich 1.12356 Tellurium dioxide 99.5+ 7446-07-3 10g $105 2024-03-01 Buy
Sigma-Aldrich 1.12356 Tellurium dioxide 99.5+ 7446-07-3 25g $127 2024-03-01 Buy
Sigma-Aldrich 435902 Tellurium dioxide 99.9995% 7446-07-3 5G $88.2 2023-01-07 Buy
Product number Packaging Price Buy
204552 10g $108 Buy
204552 50g $358 Buy
1.12356 10g $105 Buy
1.12356 25g $127 Buy
435902 5G $88.2 Buy

Tellurium dioxide Chemical Properties,Uses,Production

Chemical Properties

Heavy, white, crystalline powder; odorless. Soluble in concentrated acids, alkalies; slightly soluble in dilute acids, water.
Tellurium dioxide.jpg

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

TeO2 can be potentially used in medical imaging and industrial monitoring processes.

Uses

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.

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.

Production Methods

Tellurium dioxide in its orthorhombic form occurs in nature as mineral tellurite. It is mined from natural deposits. Also, tellurium dioxide is produced as an intermediate during recovery of tellurium metal from anode slimes of electrolytic copper refining (See Tellurium, Production). The dioxide also is prepared by treating tellurium metal with hot nitric acid to form 2TeO2?HNO3. The product then is heated to drive off nitric acid.

General Description

Tellurium dioxide (TeO2) is a ceramic material that can be used as a semiconducting oxide. It has a wide band gap and high mobility as determined by density functional theory (DFT) calculations. In bulk quantity, it exists in two polymorphs which include tetragonal α-TeO2 and orthorhombic β-TeO2.

Flammability and Explosibility

Non flammable

Safety Profile

Poison by intratracheal route. An experimental teratogen. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of Te. See also TELLURIUM COMPOUNDS.

Purification Methods

Dissolve it in 5M NaOH, filter it and precipitate it by adding 10M HNO3 to the filtrate until the solution is acid to phenolphthalein. After decanting the supernatant, the precipitate is washed five times with distilled water, then dried for 24hours at 110o [Horner & Leonhard J Am Chem Soc 74 3694 1952].

Tellurium dioxide synthesis

7803-68-1
7446-07-3
Synthesis of Tellurium dioxide from TELLURIC ACID

Tellurium dioxide Preparation Products And Raw materials

Raw materials

Tellurium tetrafluoride. TELLURIUM (IV) IODIDE Tellurium tetrachloride dihydrogen trioxotellurate TELLURIC ACID
Nitric acid Tellurium

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Preparation Products

TELLURIUM HEXAFLUORIDE

Tellurium dioxide Suppliers

Global( 264)Suppliers
Supplier Tel Email Country ProdList Advantage
Zhuoer Chemical Co., Ltd
02120970332; +8613524231522 sales@zhuoerchem.com China 2904 58
Hebei Weibang Biotechnology Co., Ltd 		+8615531157085 abby@weibangbio.com China 8810 58
Hebei Mojin Biotechnology Co., Ltd 		+86 13288715578 +8613288715578 sales@hbmojin.com China 12839 58
Hebei Chuanghai Biotechnology Co,.LTD 		+86-13131129325 sales1@chuanghaibio.com China 5892 58
Hebei Weibang Biotechnology Co., Ltd 		+8617732866630 bess@weibangbio.com China 18153 58
Henan Tianfu Chemical Co.,Ltd. 		+86-0371-55170693 +86-19937530512 info@tianfuchem.com China 21634 55
career henan chemical co 		+86-0371-86658258 +8613203830695 sales@coreychem.com China 29881 58
Hubei Jusheng Technology Co.,Ltd. 		18871490254 linda@hubeijusheng.com CHINA 28172 58
Hubei xin bonus chemical co. LTD 		86-13657291602 linda@hubeijusheng.com CHINA 22963 58
Chongqing Chemdad Co., Ltd 		+86-023-6139-8061 +86-86-13650506873 sales@chemdad.com China 39894 58
Supplier Advantage
Zhuoer Chemical Co., Ltd
58
Hebei Weibang Biotechnology Co., Ltd 		58
Hebei Mojin Biotechnology Co., Ltd 		58
Hebei Chuanghai Biotechnology Co,.LTD 		58
Hebei Weibang Biotechnology Co., Ltd 		58
Henan Tianfu Chemical Co.,Ltd. 		55
career henan chemical co 		58
Hubei Jusheng Technology Co.,Ltd. 		58
Hubei xin bonus chemical co. LTD 		58
Chongqing Chemdad Co., Ltd 		58

View Lastest Price from Tellurium dioxide manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Tellurium dioxide pictures 2024-11-13 Tellurium dioxide
7446-07-3
 US $10.00 / KG 1KG 99% 10 mt Hebei Weibang Biotechnology Co., Ltd
Tellurium dioxide pictures 2024-11-01 Tellurium dioxide
7446-07-3
 US $0.00-0.00 / KG 1KG 99% 500000kg Hebei Weibang Biotechnology Co., Ltd
Tellurium dioxide pictures 2024-10-11 Tellurium dioxide
7446-07-3
 US $150.00-90.00 / KG 1KG 99% 10000kg Hebei Chuanghai Biotechnology Co,.LTD
  • Tellurium dioxide pictures
  • Tellurium dioxide
    7446-07-3
  • US $150.00-90.00 / KG
  • 99%
  • Hebei Chuanghai Biotechnology Co,.LTD

Tellurium dioxide Spectrum

Tellurium dioxide(7446-07-3)IR1Tellurium dioxide(7446-07-3)Raman

7446-07-3(Tellurium dioxide)Related Search:

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RUBIDIUM TELLURATE Tellurium dioxide STRONTIUM TELLURATE

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