CAS No.7783-80-4,TELLURIUM HEXAFLUORIDE Suppliers,MSDS download

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Basic Information

Molecular Structure:
CAS No.:	7783-80-4
Name:	TELLURIUM HEXAFLUORIDE
Article Data:	30

Formula:	TeF₆
Molecular Weight:	241.59
Synonyms:	Telluriumfluoride (TeF6) (6CI,7CI,8CI);Hexafluorotellurium;Tellurium hexafluoride;hexafluoro-λ⁶-tellane;
EINECS:	232-027-0
Density:	(solid; -191°) 4.006; d (liq; -10°) 2.499
Melting Point:	-37
Boiling Point:	-38,9°C
Solubility:	slowly mixes with H2O, hydrolyzing to telluric acid [MER06]
Hazard Symbols:	T
Risk Codes:	20-31-34
Safety:	3/7-9-36/37/39-45
PSA:	0.00000
LogP:	2.14040

Synthetic route

: 19610-51-6
K(1+)*TeF5O(1-)=KTeF5O

: 7782-41-4
fluorine

A: 83314-21-0
TeF5OF

B: 7783-80-4
tellurium hexafluoride

Conditions

Conditions	Yield
In neat (no solvent) KTeF5O was treated with F2 (molar ratio 1:3.11) for 6 wk at -45°C;	A 0% B 80%
In neat (no solvent) KTeF5O was treated with F2 (molar ratio 1:3.11) for 8 d at -45°C;	A 0% B 26%

...Expand

: tellurium

: 7446-07-3
tellurium(IV) oxide

: 7782-41-4
fluorine

A: ditellurium decafluoride

B: Te3F14O2

C: 7783-80-4
tellurium hexafluoride

Conditions

Conditions	Yield
In neat (no solvent) a mixture of TeO2:Te=1:1 was treated with F2 (4 l/h) dild. with N2 (10 l/h) at a furnace temp. of 50-60°C;;	A 25% B 2% C 73%
In neat (no solvent) a mixture of TeO2:Te=1:1 was treated with F2 (4 l/h) dild. with O2 (10 l/h) at a furnace temp. of 50-60°C; the yield of Te2F10 is almost 50%;;

...Expand

: 13536-85-1
fluorosulfuryl hypofluorite

: cesium pentafluoroorthotellurate

A: 57458-27-2
teflic acid

B: 83314-21-0
TeF5OF

C: 7783-80-4
tellurium hexafluoride

Conditions

Conditions	Yield
In neat (no solvent) byproducts: CsSO3F; CsTeF5O was evacuated and cooled to -196°C, FOSO2F (molar ratio 1.22:1) was added from vac. line, closed, warmed slowly to -78°C in liq. N2-CO2 slush bath, kept at -45°C for 9 d, cooled to -196°C; pumped off, sepd. by fractional condensation in traps (-78, -126 and -196°C);	A n/a B 68% C n/a

...Expand

: 56395-49-4
titanium(IV) tetrakis(pentafluoroorthotellurate)

A: 13537-16-1
titanium oxyfluoride

B: 20533-01-1
F5TeOTeF5

C: 63569-53-9, 63598-94-7, 84823-51-8
F5Te(OTeF4)OTeF5

D: 7783-80-4
tellurium hexafluoride

Conditions

Conditions	Yield
heated at 250°C for 15 h in autoclave;	A 19% B 26% C 51% D 3.9%

...Expand

: cesium pentafluoroorthotellurate

: 7782-41-4
fluorine

A: 83314-21-0
TeF5OF

B: 7783-80-4
tellurium hexafluoride

Conditions

Conditions	Yield
In neat (no solvent) CsTeF5O was treated with F2 (molar ratio 1:3.11) for 2 wk at -10°C;	A 0% B 48%
In neat (no solvent) CsTeF5O was treated with F2 (molar ratio 1:3.11) for 8 d at -45°C;	A 0% B 26%

...Expand

: 7446-07-3
tellurium(IV) oxide

: 7637-07-2
boron trifluoride

A: ditellurium decafluoride

B: Te3F14O2

C: 7783-80-4
tellurium hexafluoride

D: 15192-26-4
tellurium(IV) fluoride

Conditions

Conditions	Yield
In neat (no solvent) TeO2 was treated with a continous stream of BF3 with He as carrier gas at 100-450°C;;
In neat (no solvent) TeO2 was treated with a continous stream of BF3 with He as carrier gas at 100-450°C;;

...Expand

: 7446-07-3
tellurium(IV) oxide

: 7782-41-4
fluorine

: 7783-80-4
tellurium hexafluoride

Conditions

Conditions	Yield
In neat (no solvent) TeO2 was treated with F2 (0.5-10 l/h) dild. with N2 (0-5 l/h) at a furnace temp. of 100-200°C;;

: tellurium

: 7782-41-4
fluorine

A: 7783-80-4
tellurium hexafluoride

B: 15192-26-4
tellurium(IV) fluoride

Conditions

Conditions	Yield
In neat (no solvent) distd. Te; with inflammation;;

...Expand

: tellurium

: 7782-41-4
fluorine

: 7783-80-4
tellurium hexafluoride

Conditions

Conditions	Yield
In neat (no solvent) product mixture of TeF6 and lower tellurium fluorides;;
In neat (no solvent) from F2 and Te in very dry glass apparatus; 10-15 hours; on cooling since begin of reaction no inflammation;;
In neat (no solvent) passing pure F2 (purified from HF by waterfree NaF in copper tube) over Te in copper tube (1.5l F2 / hour; no explosion);; condensation on cooling with carbon dioxide-alc.-freezing mixture in Pyrex glass vessel; fractionated sublimation in vac.;;

: tungsten ditelluride

: 7782-41-4
fluorine

A: 7783-80-4
tellurium hexafluoride

B: 7783-82-6
tungsten(VI) fluoride

C: 15192-26-4
tellurium(IV) fluoride

Conditions

Conditions	Yield
In neat (no solvent) WTe2 placed in a tungsten saucer, addn. of a small amt. of sulfur as fuse, react. with fluorine in a prefluorinated perforated nickel crucible;

...Expand

Total:13 Page 1 of 1 1

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Consensus Reports

EPA Extremely Hazardous Substances List. Reported in EPA TSCA Inventory.

Standards and Recommendations

OSHA PEL: TWA 0.02 ppm (Te)
ACGIH TLV: TWA 0.02 ppm (Te)
DOT Classification: 2.3; Label: Poison Gas

Specification

The Tellurium hexafluoride, with the CAS registry number 7783-80-4 and EINECS registry number 232-027-0, has the systematic name of hexafluoro-λ⁶-tellane. And the molecular formula of this chemical is TeF₆. It is a colorless, highly toxic gas with an extremely unpleasant smell. And it is often used as chemical medicine.

The physical properties of Tellurium hexafluoride are as following: (1)ACD/LogP: -1.94; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): -1.94; (4)ACD/LogD (pH 7.4): -1.94; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 2.1; (8)ACD/KOC (pH 7.4): 2.1; (9)#H bond acceptors: 9; (10)#H bond donors: 5; (11)#Freely Rotating Bonds: 12; (12)Polar Surface Area: 83.07 Å²; (13)Index of Refraction: 1.622; (14)Molar Refractivity: 92.74 cm3; (15)Molar Volume: 263 cm³; (16)Polarizability: 36.76×10^-24cm³; (17)Surface Tension: 59.4 dyne/cm; (18)Density: 1.415 g/cm³; (19)Flash Point: 342.4 °C; (20)Enthalpy of Vaporization: 99.67 kJ/mol; (21)Boiling Point: 642.6 °C at 760 mmHg; (22)Vapour Pressure: 2.17E-17 mmHg at 25°C.

Properties of Tellurium hexafluoride: It is a highly symmetric octahedral molecule, and its physical properties resemble the sulfur and selenium analogs. Due to the increase in molecular weight, it is less volatile. At temperatures below -38 °C, this chemical condenses to a volatile white solid.

Preparation of Tellurium hexafluoride: It can be prepared by passing fluorine gas over tellurium metal at 150 °C. It can also be prepared by passing fluorine gas over TeO₃ or indirectly by reacting TeO₂ with SeF₄ to produce TeF₄ and then heating TeF4 in excess of 200 °C to make TeF₆ and Te.

You should be cautious while dealing with this chemical. It is harmful by inhalation, and it may also cause burns. Besides, if contact with acids, it will liberate toxic gas. Therefore, you had better take the following instructions: Keep container tightly closed in a cool place; Keep container in a well-ventilated place; Wear suitable protective clothing, gloves and eye/face protection; In case of accident or if you feel unwell, seek medical advice immediately (show label where possible).

You can still convert the following datas into molecular structure:
(1)SMILES: F[Te](F)(F)(F)(F)F
(2)InChI: InChI=1/F6Te/c1-7(2,3,4,5)6
(3)InChIKey: NNCGPRGCYAWTAF-UHFFFAOYAP

The toxicity data is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
guinea pig	LCLo	inhalation	5ppm/4H (5ppm)	LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA	Archiv fuer Toxikologie. Vol. 18, Pg. 140, 1960.
mouse	LCLo	inhalation	5ppm/1H (5ppm)	LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA	Archiv fuer Toxikologie. Vol. 18, Pg. 140, 1960.
rabbit	LCLo	inhalation	5ppm/4H (5ppm)	LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA	Archiv fuer Toxikologie. Vol. 18, Pg. 140, 1960.
rat	LCLo	inhalation	5ppm/4H (5ppm)	LUNGS, THORAX, OR RESPIRATION: ACUTE PULMONARY EDEMA	Archiv fuer Toxikologie. Vol. 18, Pg. 140, 1960.