Hydrogen telluride
- CAS No.
- 7783-09-7
- Chemical Name:
- Hydrogen telluride
- Synonyms
- TeH2;ellane;tellane;Einecs 231-981-5;Dihydrotellurium;Tellurium hydride;Dihydridetellurium;Hydrogen telluride;Hydrogen telluride(H2Te);Hydrogen telluride ISO 9001：2015 REACH
- CBNumber:
- CB0852081
- Molecular Formula:
- H2Te
Lewis structure
- Molecular Weight:
- 129.61588
- MDL Number:
- MOL File:
- 7783-09-7.mol
- MSDS File:
- SDS
| Melting point | -49° |
|---|---|
| Boiling point | bp -2° |
| Density | dliq-12 2.68 |
| solubility | soluble in H2O, ethanol, alkaline solutions |
| form | colorless gas |
| color | colorless |
| Water Solubility | soluble H2O, unstable solution; soluble alcohol and alkalies [HAW93] |
| CAS DataBase Reference | 7783-09-7 |
| EWG's Food Scores | 1 |
| FDA UNII | 7F4735942K |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |    GHS02,GHS04,GHS06 |
|---|---|
| Signal word | Danger |
| Hazard statements | H330-H220-H280 |
| Precautionary statements | P260-P271-P284-P304+P340-P310-P320-P403+P233-P405-P501-P210-P377-P381-P403-P410+P403 |
Hydrogen telluride Chemical Properties,Uses,Production
Description
Hydrogen telluride has the formula, H2Te. The simplest hydride of Te, it is rarely encountered because of its tendency to decompose to the constituent elements. Most compounds with Te–H bonds are unstable with respect to loss of H2. H2Te is chemically and structurally similar to H2S, and both are acidic species with H–X–H angles approaching 90°.The tellurides of the alkaline earth metals tend to immediately decompose on exposure to air, with liberation of tellurium. H2Te is prepared by the acidification of salts of Te2-,such as Al2Te3 and Na2Te.
Na2Te can be generated by the reaction of Na and Te in anhydrous ammonia. The intermediate in the acidification, the HTe is a stable anion.
H2Te is an endothermic compound, and is unstable in air, rapidly decomposing into water and elemental tellurium:
2H2Te+ O2 → 2H2O+ 2Te
It is almost as acidic as phosphoric acid (pKa=8.1×10-3), having a pKa value of about 2.3×10-3. It reacts with many metals to form tellurides. However, many of these are unstable relative to their decomposition to the elements. Its CAS number is 7783-09-7 and its molecular weight is 129.6158 g/mol. It is a colorless gas and is toxic if breathed. Its density is 3.310 g/cm3 and its melting point is –49°C with a boiling point of –2.2°C. Its solubility in water is 0.701 g/100 ml of water at 20°C.
Chemical Properties
Colorless gas.Soluble in water but unstable; soluble in alcohol and alkalies.
Physical properties
Colorless gas; strong garlic-like odor; stable to light when dry but under-goes photochemical decompostion in the presence of moisture and dust; den-sity 5.68 g/L; liquefies to a colorless unstable liquid at -2°C, decomposed bylight; liquid density 2.57 g/mL at -20°C; solidifies at -49°C; soluble in water,alcohol and alkalies; pKa 2.6 (for first dissociation constant at 18°C) and 11.0(the dissociation constant at 25°C) for the second replaceable hydrogen.
Uses
It is synthesized by the action of acid on aluminum telluride. It has no industrial uses.
Preparation
Hydrogen telluride is prepared by the reaction of aluminum telluride,Al2Te3 with hydrochloric acid:
Al2Te3 + 6HCl → 3H2Te + 2AlCl3
It also may be prepared by electrolysis of a 50% sulfuric acid solution using atellurium cathode.
Hazard
See hydrogen selenide.
Hydrogen telluride Preparation Products And Raw materials
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| Hubei Jusheng Technology Co.,Ltd. | 18871490254 | linda@hubeijusheng.com | CHINA | 28180 | 58 |
| Shaanxi Dideu Medichem Co. Ltd | +86-029-89586680 +86-18192503167 | 1026@dideu.com | China | 9320 | 58 |
| Hu Bei Jiutian Bio-medical Technology CO.,Ltd | 027-88013699 17354350817 | Ryan@jiutian-bio.com | China | 7433 | 58 |
| Mainchem Co., Ltd. | +86-0592-6210733 | sale@mainchem.com | China | 32360 | 55 |
| Shanghai Meishui Chemical Technology Co., Ltd | 021-60549325 18616193163 | China | 4528 | 56 | |
| JinJin Le Chemical Co., Ltd | 10106090 | jjlchem2@163.com | China | 9986 | 58 |
| Shaanxi DIDU pharmaceutical and Chemical Co., Ltd | 17691182729 18161915376 | 1046@dideu.com | China | 10008 | 58 |
View Lastest Price from Hydrogen telluride manufacturers
| Image | Update time | Product | Price | Min. Order | Purity | Supply Ability | Manufacturer | |
|---|---|---|---|---|---|---|---|---|
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2021-08-12 | Hydrogen telluride
7783-09-7
|
US $15.00-10.00 / KG | 1KG | 99%+ HPLC | Monthly supply of 1 ton | Zhuozhou Wenxi import and Export Co., Ltd |
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- Hydrogen telluride
7783-09-7
- US $15.00-10.00 / KG
- 99%+ HPLC
- Zhuozhou Wenxi import and Export Co., Ltd