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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
24 December 2015 to 08 March 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study according to the guideline under GLP
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Qualifier:
according to
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
GLP compliance:
yes
Type of method:
effusion method: by loss of weight or by trapping vaporisate
Temp.:
20 °C
Vapour pressure:
0 Pa
Remarks on result:
other: weight loss of the substance was less than that of reference compound chrysene
Temp.:
25 °C
Vapour pressure:
0
Remarks on result:
other: weight loss of the substance was less than that of reference compound chrysene

Results of the isothermal TGA analysis

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

logνT

logPT

PT
[Pa]

 

 

 

 

 

 

170

4.888

5.83´10-4

-3.23

0.87

7.3

 

7.139

8.52´10-4

-3.07

1.06

11

 

 

 

 

 

 

180

6.579

7.85´10-4

-3.10

1.02

10

 

9.316

1.11´10-3

-2.95

1.19

16

 

 

 

 

 

 

190

8.792

1.05´10-3

-2.98

1.16

15

 

12.57

1.50´10-3

-2.82

1.35

22

 

 

 

 

 

 

200

12.24

1.46´10-3

-2.84

1.33

22

 

17.17

2.05´10-3

-2.69

1.50

32

 

 

 

 

 

 

Vapour pressure of the test item

 

20°C

25°C

 

[Pa]

[mm Hg]

[Pa]

[mm Hg]

 

 

 

 

 

Test item

< 8.4´10-7

< 6.3´10-9

< 1.3´10-6

< 9.6´10-9

 

 

 

 

 

 

 

Conclusions:
The vapour pressure of the substance is < 8.4E-07 Pa at 20 °C
Executive summary:

The vapour pressure was determined for the substance with the isothermal thermogravimetric effusion method. The vapour pressure is lower than that of the reference compound chrysene: < 8.4E-07 Pa at 20 °C and 1.3E-06 Pa at 25 °C.

Description of key information

The vapour pressure was determined for the substance with the isothermal thermogravimetric effusion method. The vapour pressure is lower than that of the reference compound chrysene: < 8.4E-07 Pa at 20 °C and 1.3E-06 Pa at 25 °C.

For risk assessment the vapour pressure is set at 1E-06 Pa at 20°C (minimum value in EUSES)

Key value for chemical safety assessment

Vapour pressure:
0 Pa
at the temperature of:
20 °C

Additional information