TELLURIUM TETRABROMIDE
- CAS No.
- 10031-27-3
- Chemical Name:
- TELLURIUM TETRABROMIDE
- Synonyms
- Einecs 233-090-7;TELLURIUM BROMIDE;Tellurium(Ⅳ) bromide;TELLURIUM TETRABROMIDE;TELLURIUM (IV) BROMIDE;Tellurium bromide(TeBr4);Tellurium(IV) tetrabromide;Tellurium Bromide, 99.999%;TelluriuM BroMide, -4 Mesh;TELLURIUM TETRABROMIDE 99%
- CBNumber:
- CB1495676
- Molecular Formula:
- Br4Te
- Molecular Weight:
- 447.22
- MOL File:
- 10031-27-3.mol
- Modify Date:
- 2024/12/18 14:07:02
| Melting point | ~380 °C(lit.) |
|---|---|
| Boiling point | 420 °C(lit.) |
| Density | 4.3 g/mL at 25 °C(lit.) |
| Flash point | 420°C |
| solubility | reacts with H2O; soluble in ethyl ether |
| form | beads |
| color | yellow-orange monoclinic crystals, crystalline |
| Water Solubility | It reacts with water and ethanol. |
| Sensitive | Moisture Sensitive |
| Merck | 14,9125 |
| Exposure limits |
ACGIH: TWA 0.1 mg/m3 NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3 |
| CAS DataBase Reference | 10031-27-3(CAS DataBase Reference) |
| EPA Substance Registry System | Tellurium bromide (TeBr4), (T-4)- (10031-27-3) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |   GHS05,GHS06 |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Signal word | Danger | |||||||||
| Hazard statements | H300-H318-H314 | |||||||||
| Precautionary statements | P280-P305+P351+P338-P310-P260h-P301+P310a-P303+P361+P353-P405-P501a | |||||||||
| Hazard Codes | C | |||||||||
| Risk Statements | 34 | |||||||||
| Safety Statements | 22-26-27-36/37/39-45 | |||||||||
| RIDADR | UN 3260 8/PG 2 | |||||||||
| WGK Germany | 3 | |||||||||
| TSCA | Yes | |||||||||
| HazardClass | 8 | |||||||||
| PackingGroup | II | |||||||||
| NFPA 704 |
|
TELLURIUM TETRABROMIDE Chemical Properties,Uses,Production
Description
Tellurium tetrabromide is a iron-gray crystalline substance; stable even in moist air. Decomposes on heating, giving off I2. Hydrolyzed slowly in cold water, rapidly in warm water, forming TeO2 and HI.
Chemical Properties
Yellow crystals. Soluble in a little water (decomposes in excess water).
Uses
Tellurium tetrabromide?it acts as a chemical and organic intermediate. It is also acts a conductor.
Preparation
Pure Te (5 g.) is introduced through adapter a into the elongated reaction flask A of the apparatus shown in Fig.1. Adapter a is connected to a N2 purification train which furnishes either pure dry N2 or N2 containing bromine vapor. For the latter, the gas stream may be passed through a wash bottle containing dry Br2 , followed by a U tube containing P2O5-glass wool. First, the apparatus in purged with pure N2. Then A is cooled with ice water and the N2 -Br2 mixture is introduced. A portion of the Br2 condenses on the Te and reacts quietly with it, while the remainder is retained in the empty U tube D, cooled with an ice-salt mixture. The difference between the weight loss of the Br2 wash bottle and the weight of the condensate in D indicates the amount of bromine remaining in A. When this becomes about twice the amount needed for quantitative conversion to TeBr4, the gas stream is interrupted, stopcock C is closed, and the product slurry is allowed to stand at room temperature for several hours (better overnight) in order to complete the reaction. Then C is reopened and the excess bromine is purged by a stream of N2 while A is simultaneously heated to 50℃. To purify the product, it is sublimed in vacuum. Gas inlet tube a is sealed off at d, the whole apparatus is tilted to a horizontal position, and ground glass joint E is connected to an aspirator through a P2O5 drying tube. During evacuation, A is heated to sublimation temperature (about 350℃) with an electric furnace. Any black condensate which may separate in B at 200℃ is vaporized by heating with a burner. The subsequently deposited yellow to orange-red powder is quite pure TeBr4; if necessary, this can be further purified by an analogous sublimation in high vacuum.
TELLURIUM TETRABROMIDE Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | Inquiry |
|---|---|---|---|---|---|
| Alfa Chemistry | United States | 24072 | 58 | Inquiry | |
| Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 | China | 8797 | 58 | Inquiry |
| Shanghai Acmec Biochemical Technology Co., Ltd. | +86-18621343501; +undefined18621343501 | China | 33338 | 58 | Inquiry |
| Aladdin Scientific | United States | 57505 | 58 | Inquiry | |
| SHANGHAI KEAN TECHNOLOGY CO., LTD. | +8613817748580 | China | 40066 | 58 | Inquiry |
| XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. | +8618950047208 | China | 43416 | 58 | Inquiry |
| ABCR GmbH & CO. KG | 49 721 95061 0 | Germany | 6831 | 75 | Inquiry |
| 9ding chemical ( Shanghai) Limited | 021-021-52271985 17721149837 | China | 19800 | 60 | Inquiry |
| Baoji Funuokang Industrial Co., Ltd | 13220096790; 13220096790 | China | 2974 | 58 | Inquiry |
| HUNAN CHEMFISH SCIENTIFIC CO.,LTD | 0731-+86-0731-85567275 18932438858 | China | 6710 | 58 | Inquiry |
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