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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:
27 Nov 1995 to 15 Dec 1995
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
Type of method:
gas saturation method
Key result
Temp.:
20 °C
Vapour pressure:
0 Pa
Temp.:
25 °C
Vapour pressure:
0 Pa

RESULTS

Control of the equipment with hexachlorobenzene

File

Temperature

(°C)

Nitrogen

Amount of substance (µg)

Vapour pressure (Pa)

Flow rate (ln/h)

Volume (ln)

450

50.15

8.05

17.28

142.5

6.55E-02

451

39.90

8.94

19.53

48.5

1.98E-02

452

30.02

7.99

132.50

90.8

5.47E-03

Remark: the volume of nitrogen is given in litres at normal conditions (0 °C and 1 atmosphere)

Results of test substance:

File

Temperature

(°C)

Nitrogen

Duration of experiment (h)

Amount of substance (µg)

Vapour pressure (Pa)

Flow rate (ln/h)

Volume (ln)

495

90.5

8.06

922.67

114.39

9.31

7.86E-05

493

100.7

8.03

518.66

64.61

13.0

1.95E-04

492

110.8

8.04

155.77

19.35

14.8

7.40E-04

491

121.0

12.11

74.45

6.14

19.2

2.01 E-03

494

121.0

7.98

167.30

20.94

35.4

1.65E-03

489

121.0

7.93

142.92

18.01

35.5

1.93E-03

490

121.0

4.09

63.92

15.60

17.5

2.13E-03

Conclusions:
Test substance has a vapour pressure of 2.7E-09 Pa at 20 °C.
Executive summary:

The vapour pressure of the test item was determined by the gas saturation method in accordance with OECD TG 104 and in compliance with GLP. The vapour pressure of the test item, measured at 20 °C was 2.7E-09 Pa and at 25 °C was 6.6E-09 Pa.

Description of key information

2.7E-9 Pa at 20 °C, OECD 104, gas saturation method, Geoffroy 1995

Key value for chemical safety assessment

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

Additional information