Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11 September 2017 - 20 October 2017
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:
2009
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:
solid: particulate/powder
Details on test material:
- Appearance: White to off-white powder
- Storage condition of test material: At room temperature

Results and discussion

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

Any other information on results incl. tables

Table: Results of the isothermal TGA analysis (test item)

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

log νT

log PT

PT
[Pa]

160

4.62661

5.52 x 10-4

-3.26

0.97

9.3

 

4.35410

5.19 x 10-4

-3.28

0.93

8.6

170

9.66331

1.15 x 10-3

-2.94

1.38

24

 

9.19183

1.10 x 10-3

-2.96

1.35

22

180

19.5779

2.34 x 10-3

-2.63

1.77

59

 

18.2840

2.18 x 10-3

-2.66

1.73

54

190

37.5664

4.48 x 10-3

-2.35

2.13

1.4 x 102

 

34.8646

4.16 x 10-3

-2.38

2.09

1.2 x 102

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the substance at 20°C was determined to be 2.5E-8 Pa.
The vapour pressure of the substance at 25°C was determined to be 6.9E-8 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 160°C, 170°C, 180°C and 190°C. The vapour pressure of the substance at 20°C and 25°C was determined by extrapolation to be 2.5E-8 Pa and 6.9E-8 Pa, resp.