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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
11-07-2019 to 18-12-2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Guideline study performed under GLP. All relevant validity criteria were met.
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
equivalent or similar to guideline
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Deviations:
no
GLP compliance:
yes
Type of method:
effusion method: isothermal thermogravimetry
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
0.82 Pa
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
1.5 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 the following tables.

 

Table 2 Results of the isothermal TGA analysis

Temperature

[°C]

Weight loss

[µg/min]

νT

[g/cm2/h]

log νT

log PT

PT

[Pa]

80

1.42834

1.70 × 10^-4

-3.77

0.29

1.9

 

1.75671

2.10 × 10^-4

-3.68

0.40

2.5

90

2.52355

3.01 × 10^-3

-3.52

0.60

4.0

 

2.91287

3.48 × 10^-3

-3.46

0.68

4.8

100

4.95749

5.92 × 10^-3

-3.23

0.97

9.4

 

5.16368

6.16 × 10^-3

-3.21

1.00

9.9

110

10.9933

1.31 × 10^-3

-2.88

1.41

26

 

9.53061

1.14 × 10^-3

-2.94

1.33

22

 

Table 2 Vapour pressure of the test item

Temperature

[°C]

log PT

PT

[Pa]

PT

[mm Hg]

20 

-2.36

4.3 × 10^-3 

3.3 × 10^-5 

25

-2.10

8.0 × 10^-3 

6.0 × 10^-5

 

The plot of the log PT of the test item as function of the reciprocal temperatures was performed. The equation of the curve was: log PT,20 = -4620 × 1/T + 13.40 (r = 0.991, n = 8).

Conclusions:
The vapour pressure of the test item was determined to be 0.0043 Pa at 20°C and 0.0080 Pa at 25°C, respectively.
Executive summary:

The vapour pressure was determined according to EU Method A.4 and OECD TG 104 using the thermogravimetric effusion method under GLP. The vapour pressure of the test item was determined to be 0.0043 Pa (or 3.3 × 10^-5 mm Hg) at 20°C, and 0.0080 Pa (or 6.0 × 10^-5 mm Hg) at 25°C.

Description of key information

Vapour Pressure: 0.0043 Pa at 20°C and 0.0080 Pa at 25°C, OECD TG 104 - thermogravimetric effusion method, 2019

Key value for chemical safety assessment

Vapour pressure:
0.008 Pa
at the temperature of:
25 °C

Additional information

Key study : EU Method A.4, 2019 : The vapour pressure was determined according to EU Method A.4 and OECD TG 104 using the thermogravimetric effusion method under GLP. The vapour pressure of the test item was determined to be 0.0043 Pa (or 3.3 × 10^-5 mm Hg) at 20°C, and 0.0080 Pa (or 6.0 × 10^-5 mm Hg) at 25°C.