Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
30 March 2020 to 29 April 2020
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
2016
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
2006
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Date of Inspection: 10-17 December 2019; Date of Signature on Certificate: 24 February 2020
Type of method:
effusion method: isothermal thermogravimetry
Temp.:
25 °C
Vapour pressure:
3.5 Pa
Key result
Temp.:
20 °C
Vapour pressure:
2.4 Pa

The results of the isothermal TGA analysis for the test item and the vapour pressure at 20°C and 25°C are given in Table 1 and Table 2 below.

The equation of the vapour pressure regression curve was: log PT = -2653 ´ 1/T + 9.44 (r = 0.991, n = 8).

Table 1          
Results of the Vapour pressure Isothermal TGA Analysis

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

log νT

log PT

PT
[Pa]

30

2.93250

3.50 x 10-4

-3.46

0.74

5.5

 

2.33038

2.78 x 10-4

-3.56

0.62

4.2

40

5.32807

6.36 x 10-4

-3.20

1.03

11

 

4.34471

5.19 x 10-4

-3.29

0.93

8.5

50

7.73515

9.23 x 10-4

-3.03

1.21

16

 

7.77351

9.28 x 10-4

-3.03

1.21

16

60

13.8481

1.65 x 10-3

-2.78

1.49

31

 

12.9799

1.55 x 10-3

-2.81

1.46

29

 

Table 2           
Vapour Pressure of the Test Item

Temperature
[°C]

log PT

PT
[Pa]

PT
[mm Hg]

20

0.39

2.4

1.8 ´ 10-2

25

0.54

3.5

2.6 ´ 10-2
Conclusions:
The vapour pressure was determined to be 2.4 Pa and 20°C and 3.5 Pa at 25°C.
Executive summary:

The isothermal thermogravimetric effusion method was applied for the determination of the vapour pressure of the test item. 

The vapour pressure was determined to be 2.4 Pa at 20°C and 3.5 Pa at 25°C.

Description of key information

2.4 Pa at 20°C; OECD 104; Jovic Madzarevic, Z. (2020)

Key value for chemical safety assessment

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

Additional information

The vapour pressure was also determined to be 3.5 Pa at 25°C.