Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
13 March 2018 - 27 March 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
2016
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
2006
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Version / remarks:
1996
Deviations:
no
GLP compliance:
yes
Type of method:
effusion method: isothermal thermogravimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
liquid: viscous
Details on test material:
- Physical appearance: dark brown to black viscous liquid
- Storage conditions: in refrigerator (2-8°C) protected from light

Results and discussion

Vapour pressureopen allclose all
Key result
Temp.:
20 °C
Vapour pressure:
9.8 Pa
Key result
Temp.:
25 °C
Vapour pressure:
16 Pa

Any other information on results incl. tables

Table: Results of the Vapour pressure Isothermal TGA Analysis

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

logνT

logPT

PT
[Pa]

45

32.0932

3.83E-3

-2.42

2.04

1.1E2

 

30.9307

3.69E-3

-2.43

2.02

1.1E2

50

43.2338

5.16E-3

-2.29

2.21

1.6E2

 

48.6273

5.80E-3

-2.24

2.27

1.9E2

55

67.6087

8.07E-3

-2.09

2.46

2.9E2

 

64.5980

7.71E-3

-2.11

2.43

2.7E2

60

84.6368

1.01E-2

-2.00

2.58

3.8E2

 

84.7215

1.01E-2

-2.00

2.58

3.8E2

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the substance at 20°C was determined to be 9.8 Pa.
The vapour pressure of the substance at 25°C was determined to be 16 Pa.
Executive summary:

The vapour pressure of the substance was determined using the isothermal thermogravimetric effusion method in a GLP study according to EC A.4, OECD 104 and OPPTS 830.7950.

The constants specific for the experimental arrangement were determined using a set of 5 reference compounds. A vapour pressure curve for the test item was constructed from duplicate measurements at 45°C, 50°C, 55°C and 60°C. The vapour pressure of the substance at 20°C and 25°C was calculated by extrapolation to be 9.8 Pa and 16 Pa, resp.