Tellurium(IV) chloride
Tellurium(IV) chloride
CAS: 10026-07-0
Molecular Formula: Cl4Te
Tellurium(IV) chloride - Names and Identifiers
| Name | Tellurium(IV) chloride |
| Synonyms | TELLURIUM CHLORIDE TELLURIUM(+4)CHLORIDE Tellurium(IV) chloride TELLURIUM (IV) CHLORIDE TELLURIUM TETRACHLORIDE Tellurium tetrachloride tetrachloro-lambda~4~-tellane Tellurium(IV) chloride(TeCl4) Telluriumchlorideoffwhitepowder (beta-4)-telluriumchloride(tecl4 Tellurium(IV) Chloride (Metals Basis Basis) tellurium(+4) dihydride cation tetrachloride |
| CAS | 10026-07-0 |
| EINECS | 233-055-6 |
| InChI | InChI=1/4ClH.H2Te/h4*1H;1H2/q;;;;+4/p-4 |
Tellurium(IV) chloride - Physico-chemical Properties
| Molecular Formula | Cl4Te |
| Molar Mass | 269.41 |
| Density | 3.26g/mLat 25°C(lit.) |
| Melting Point | 224°C(lit.) |
| Boling Point | 380°C(lit.) |
| Flash Point | 380°C |
| Water Solubility | MAY DECOMPOSE |
| Appearance | Powder |
| Specific Gravity | 3.26 |
| Color | Off-white to light yellow |
| Exposure Limit | ACGIH: TWA 0.1 mg/m3NIOSH: IDLH 25 mg/m3; TWA 0.1 mg/m3 |
| Merck | 14,9126 |
| Sensitive | Moisture Sensitive |
Tellurium(IV) chloride - Risk and Safety
| Hazard Symbols | C - Corrosive |
| Risk Codes | 34 - Causes burns |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 3260 8/PG 2 |
| WGK Germany | 3 |
| RTECS | WY2635000 |
| TSCA | Yes |
| HS Code | 28121099 |
| Hazard Class | 8 |
| Packing Group | II |
Tellurium(IV) chloride - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| product description | tellurium tetrachloride is a white to yellow hygroscopic crystal with a melting point of 380±6 ℃ and a relative density of 3.2615. Tellurium tetrachloride is soluble in absolute ethanol and toluene. Tellurium tetrachloride deliquescates in humid air, and at the same time, part of the hydrolysis reaction occurs to produce HCl and TeO2. The melt is yellow and its vapor is brown-red. |
| Preparation | Put tellurium dioxide with purity of 99.9% in a graphite burning boat and put it in a tubular electric furnace with stainless steel furnace tubes; In the tubular electric furnace, hydrogen is introduced at a flow rate of 3L-30 L /min, and the metal tellurium powder with purity of 99.9% is reduced at 500-550 ℃ for 7-9h, and the reaction ends; the metal tellurium powder obtained by hydrogen reduction is loaded into a three-port heat-resistant glass flask with a volume of 1-5L, and a thin heat-resistant glass tube is inserted into the bottom of the bottle from one side of the three-port flask; first, the air in the three-port flask is removed with dried nitrogen, the three-port flask is heated to 250 ℃ with an electric heating insulation sleeve, dry chlorine gas is introduced through the thin heat-resistant glass tube at a flow rate of 2-200ml/min, and the metal tellurium powder, gradually transform into black tellurium dichloride liquid, continue to pass in chlorine, and tellurium dichloride gradually transforms into liquid tellurium tetrachloride. The product tellurium tetrachloride still contains a number of tellurium dichloride; use an electric heating sleeve to hold The three-port glass bottle of tellurium tetrachloride is heated to 420 ℃, and the materials in the three-port bottle are distilled with a chlorine gas stream to obtain tellurium tetrachloride with a purity of 99.99% in another, the inside of the distillation tower is replaced with nitrogen, heated to 420 ℃ with an electric heating sleeve, and the condenser is heated to 270 ℃. At this time, tellurium tetrachloride begins to distillate; about 10% of the primary distillate is separated, and then about 90% of the distillate is obtained. Anhydrous tellurium tetrachloride with purity greater than 99.99%. |
| category | corroded articles |
| toxicity classification | highly toxic |
| flammability hazard characteristics | flammable in case of h-hole agent; toxic hydrogen cyanide gas is emitted in case of cyanide; toxic chloride and telluride-containing smoke generated by heating |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from oxidant, cyanide, h-pore agent and alkali. |
| fire extinguishing agent | sand, mist water, carbon dioxide |
| occupational standard | TLV-TWA 0.1 mg (tellurium)/m3; STEL 0.3 mg (tellurium)/m3 |
Last Update：2024-04-09 02:00:05
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CAS: 10026-07-0
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