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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 - 28 Jun 2005
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
GLP compliance:
yes
Type of method:
static method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: PDC Lot 1, Pail 2
- Expiration date of the lot/batch: 23 Mar 2006
- Purity: 99.959%
- Synonyms: MTDID 665
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature in the dark
Key result
Temp.:
20 °C
Vapour pressure:
6.25 kPa
Remarks on result:
other: ±0.06 kPa
Test no.:
#1
Temp.:
37.92 °C
Vapour pressure:
14 879 Pa
Remarks on result:
other: First vapour pressure
Test no.:
#2
Temp.:
32.38 °C
Vapour pressure:
11 545 Pa
Remarks on result:
other: Second vapour pressure
Test no.:
#3
Temp.:
24.69 °C
Vapour pressure:
7 915 Pa
Remarks on result:
other: Third vapour pressure

Table, Measurements from the vapor pressure experiment

Trial 1 (37.92 °C)

P (Pa)

ln P

Trial 2 (32.38 °C)

P (Pa)

ln P

Trial 3 (24.69 °C)

P (Pa)

ln P

12¹

11537

9.35

24¹

7918

8.98

1

14879

9.61

13

11544

9.35

25

7916

8.98

2

14881

9.61

14

11547

9.35

26

7915

8.98

3

14881

9.61

15

11545

9.35

27

7914

8.98

4

14876

9.61

16

11548

9.35

28

7915

8.98

5

14880

9.61

17

11548

9.35

29

7914

8.98

6

14879

9.61

18

11545

9.35

30

7914

8.98

7

14883

9.61

19

11543

9.35

31

7916

8.98

8

14879

9.61

20

11545

9.35

32

7915

8.98

9

14876

9.61

21

11545

9.35

33

7914

8.98

10

14878

9.61

22

11546

9.35

34

7915

8.98

11

14876

9.61

23

11544

9.35

35

7916

8.98

average

14879 ± 4²

9.61 ± 0.01

11545 ± 3

9.35 ± 0.01

7915 ± 2

8.98 ± 0.01

1, System instability. The lnP value obtained in this measurement was not used for the calculations

2, Mean ± 2 x error calculation

Conclusions:
The vapor pressure of HFE s-601 at 20 °C is 6.25 ± 0.06 kPa (46.9 ± 0.5 mm Hg) (OECD 104)
Executive summary:

The vapor pressure of of HFE s-601 was determined by the static method. Eleven vapor pressures were taken at each of three, thermostatted temperatures and the values entered into a Clapeyron equation to extrapolate to 20 °C. The test was done according to OECD guidelines and in accord with GLP, and is therefore considered reliable without restrictions.

Description of key information

The vapor pressure of HFE s-601 at 20 °C is 6.25 ± 0.06 kPa (46.9 ± 0.5 mm Hg) (OECD 104)

Key value for chemical safety assessment

Vapour pressure:
6.25 kPa
at the temperature of:
20 °C

Additional information

The vapor pressure of of HFE s-601 was determined by the static method. Eleven vapor pressures were taken at each of three, thermostatted temperatures and the values entered into a Clapeyron equation to extrapolate to 20 °C. The test was done according to OECD guidelines and in accord with GLP, and is therefore considered reliable without restrictions.