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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: vapour pressure balance
Specific details on test material used for the study:
Identification: 1,1'-[ethane-1,2-diylbis(thio)]bisbenzene
Appearance/Physical state: White solid
Batch: 7061415
Purity: 99.96%
Expiry date: 13 February 2019
Storage conditions: Room temperature in the dark
Key result
Test no.:
#3
Temp.:
25 °C
Vapour pressure:
< 0.006 Pa

Run 1

 

Temperature (ºC)

Temperature (K)

Reciprocal Temperature (K-1)

Mass Difference (μg)

Mass Difference (kg)

Vapor Pressure (Pa)

Log10Vp

45

318.15

0.003143171

5.19

5.190E-09

0.007205050

-2.142363021

46

319.15

0.003133323

3.69

3.690E-09

0.005122665

-2.290504013

47

320.15

0.003123536

4.89

4.890E-09

0.006788573

-2.168221520

48

321.15

0.003113810

3.29

3.290E-09

0.004567363

-2.340334481

49

322.15

0.003104144

4.39

4.390E-09

0.006094445

-2.215065858

50

323.15

0.003094538

2.90

2.900E-09

0.004025943

-2.395132381

51

324.15

0.003084992

2.30

2.300E-09

0.003192989

-2.495802543

52

325.15

0.003075504

2.90

2.900E-09

0.004025943

-2.395132381

53

326.15

0.003066074

3.19

3.190E-09

0.004428537

-2.353739696

54

327.15

0.003056702

3.00

3.000E-09

0.004164769

-2.380409124

55

328.15

0.003047387

2.50

2.500E-09

0.003470640

-2.459590370

  

 

Run 2 

 

Temperature (ºC)

Temperature (K)

Reciprocal Temperature (K-1)

Mass Difference (μg)

Mass Difference (kg)

Vapor Pressure (Pa)

Log10Vp

45

318.15

0.003143171

4.69

4.690E-09

0.006510922

-2.186357536

46

319.15

0.003133323

3.39

3.390E-09

0.004706189

-2.327330681

47

320.15

0.003123536

2.00

2.000E-09

0.002776512

-2.556500383

48

321.15

0.003113810

2.40

2.400E-09

0.003331815

-2.477319137

49

322.15

0.003104144

2.20

2.200E-09

0.003054164

-2.515107698

50

323.15

0.003094538

2.10

2.100E-09

0.002915338

-2.535311084

51

324.15

0.003084992

2.40

2.400E-09

0.003331815

-2.477319137

52

325.15

0.003075504

2.40

2.400E-09

0.003331815

-2.477319137

53

326.15

0.003066074

2.20

2.200E-09

0.003054164

-2.515107698

54

327.15

0.003056702

2.90

2.900E-09

0.004025943

-2.395132381

55

328.15

0.003047387

2.90

2.900E-09

0.004025943

-2.395132381

 

 

Run 3

 

Temperature (ºC)

Temperature (K)

Reciprocal Temperature (K-1)

Mass Difference (μg)

Mass Difference (kg)

Vapor Pressure (Pa)

Log10Vp

45

318.15

0.003143171

6.59

6.590E-09

0.009148608

-2.038644964

46

319.15

0.003133323

3.59

3.590E-09

0.004983840

-2.302435930

47

320.15

0.003123536

1.70

1.700E-09

0.002360036

-2.627081457

48

321.15

0.003113810

2.00

2.000E-09

0.002776512

-2.556500383

49

322.15

0.003104144

2.60

2.600E-09

0.003609466

-2.442557031

50

323.15

0.003094538

3.29

3.290E-09

0.004567363

-2.340334481

51

324.15

0.003084992

2.40

2.400E-09

0.003331815

-2.477319137

52

325.15

0.003075504

3.00

3.000E-09

0.004164769

-2.380409124

53

326.15

0.003066074

3.10

3.100E-09

0.004303594

-2.366168685

54

327.15

0.003056702

2.40

2.400E-09

0.003331815

-2.477319137

55

328.15

0.003047387

3.49

3.490E-09

0.004845014

-2.314704952

 

Conclusions:
The vapor pressure of 1,1'-[ethane-1,2-diylbis(thio)]bisbenzene has been determined to be less than 5.7 x 10-3 Pa at 25 °C
Executive summary:

The vapor pressure of 1,1'-[ethane-1,2-diylbis(thio)]bisbenzene has been determined to be less than 5.7 x 10-3 Pa at 25 °C, using the vapor pressure balance method, designed to be compatible with Method A.4 Vapour Pressure of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 104 of the OECD Guidelines for Testing of Chemicals, 23 March 2006.

Description of key information

Key value for chemical safety assessment

Additional information