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SULFUR
HEXAFLUORIDE

M.W. [1]

146.056

N.B.P [2]

222.45 K

T.P [2]

223.15 K

SF6

Pc [2]

3.76 MPa

Tc [2]

318.7 K

Vc [3]

0.19582 m3/kmol

Note: In the tables, #RED is used for properties obtained from estimation methods. *,†Other colors are used to distinguish between differing data sets within a single column. If no uncertainty is specified, then no uncertainty was provided by the reference.

T

K

 semiprop equation

Vapor Pressure

MPa

B(T)

cmmol-1

dB/dT·T

cm3·mol-1

C(T)

cmmol-2

dC/dT·T

cmmol-2

λ

mW/(m·K)

η

µPa·s

Estimated
Uncertainty

1%/0.1%

1%

Gas densities are calculated to better than 0.1% over the temperature and pressure ranges of the reference.

5.0%

0.5%

Reference

1,5

6

5

5

5

5

7

7

223

9.17

0.23

-528.8

1190.2

-22326

450223

7.0

11.76

225

9.25

0.25

-518.2

1164.6

-18470

413996

7.1

11.86

230

9.43

0.31

-493.3

1104.5

-10258

335752

7.4

12.09

235

9.61

0.37

-470.2

1049.6

-3741

272172

7.6

12.33

240

9.79

0.45

-448.6

999.3

1426

220292

7.9

12.56

245

9.97

0.54

-428.5

952.9

5517

177801

8.2

12.80

250

10.09

0.64

-409.7

910.2

8747

142881

8.4

13.03

255

10.26

0.75

-392.0

870.7

11283

114101

8.7

13.26

260

10.43

0.88

-375.5

834.1

13261

90319

9.0

13.49

265

10.60

1.02

-359.9

800.1

14789

70626

9.3

13.73

270

10.76

1.18

-345.3

768.4

15952

54291

9.5

13.96

275

10.92

1.36

-331.4

738.9

16820

40723

9.8

14.19

280

11.08

1.55

-318.4

711.4

17449

29444

10.1

14.42

285

11.23

1.77

-306.0

685.6

17885

20064

10.4

14.65

290

11.38

2.00

-294.3

661.4

18164

12264

10.7

14.88

295

11.53

2.26

-283.2

638.7

18317

5783

11.0

15.10

300

11.68

2.53

-272.6

617.4

18368

404

11.3

15.33

305

11.82

2.83

-262.6

597.3

18337

-4049

11.6

15.56

310

11.96

3.16

-253.0

578.3

18240

-7727

11.9

15.78

315

12.10

3.50

-243.9

560.4

18091

-10750

12.2

16.01

318.7

12.20

3.77

-237.5

547.8

17955

-12628

12.4

16.18

320

12.23

-

-235.2

543.5

17902

-13224

12.5

16.23

340

12.74

-

-204.1

484.2

16896

-19136

13.6

17.12

360

13.21

-

-177.9

435.6

15733

-21118

14.8

18.00

380

13.64

-

-155.4

395.3

14585

-21099

16.0

18.87

400

14.03

-

-136.1

361.3

13526

-20092

17.2

19.73

420

14.38

-

-119.1

332.3

12580

-18635

18.3

20.57

440

14.70

-

-104.3

307.3

11750

-17016

19.4

21.40

460

14.99

-

-91.1

285.6

11030

-15390

20.5

22.22

480

15.20

-

-79.4

266.6

10408

-13834

21.6

23.02

500

15.44

-

-68.8

249.8

9873

-12386

22.6

23.81

550

15.95

-

-46.7

215.4

8843

-9300

25.2

25.74

600

16.37

-

-29.1

188.8

8141

-6925

27.7

27.59

650

16.71

-

-14.9

167.7

7661

-5121

30.0

29.37

700

16.99

-

-3.1

150.6

7334

-3752

32.3

31.08

750

17.22

-

6.8

136.5

7112

-2709

34.4

32.73

800

17.42

-

15.2

124.6

6964

-1910

36.5

34.32

850

17.58

-

22.4

114.5

6867

-1295

38.4

35.84

900

17.73

-

28.7

105.8

6807

-819

-

-

950

17.85

-

34.2

98.2

6773

-449

-

-

1000

17.95

-

39.1

91.5

6758

-162

-

-

 

References:

  1. IUPAC; "Atomic Weights of the Elements 1993"; J. Phys. Chem. Ref. Data (24, 1561, 1995).
  2. Horvath, A.L., "Physical Properties of Inorganic Compounds"; Crane Russak, New York (1975).
  3. Mathews, J.F., "The Critical Constants of Inorganic Substances", Chem. Rev.(72, 71, 1972).
  4. "JANAF Thermochemical Tables", J. Phys. Chem. Ref. Data (7, 793, 1978) (1978 Supplement).
  5. Hurly, J.J., Defibaugh, D.R., and Moldover, M.R., "Thermodynamic Properties of Sulfur Hexafluoride", Int. J. Thermophys. (21, 3, 2000).
  6. Verdelli, L.S., Miller, H.C., and Gall, J.F., "Some Physical Properties of Sulfur Hexafluoride"; Ind. Eng. Chem. (43, 1126, 1951).
  7. Strehlow, T. and Vogel, E., "Temperature Dependence and Initial Density Dependence of the Viscosity of Sulphur Hexafluoride", Physica A, (161, 101, 1989).


Footnote:

#RED is used for properties obtained from estimation methods.
*BLUE, ORANGE Other colors are used to distinguish between differing data sets within a single column.



Contacts:

Keith Gillis
301-975-2468
keith.gillis@nist.gov

Michael Moldover
301-975-2459
michael.moldover@nist.gov

100 Bureau Drive, M/S 8360
Gaithersburg, MD 20899-8360