Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
28 December 2017 - 11 January 2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019

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:
solid: particulate/powder
Details on test material:
- Physical appearance: off-white to beige powder
- Test item storage: at room temperature
Specific details on test material used for the study:
Decomposition temp.: > 225°C

Results and discussion

Vapour pressureopen allclose all
Key result
Temp.:
20 °C
Vapour pressure:
0 Pa
Remarks on result:
other: mean of 2 measurements
Key result
Temp.:
25 °C
Vapour pressure:
0 Pa
Remarks on result:
other: mean of 2 measurements

Any other information on results incl. tables

Results of the Vapour pressure Isothermal TGA Analysis

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

log νT

log PT

PT
[Pa]

140

0.689087

8.23x10-5

-4.08

-0.09

0.81

 

0.673180

8.04x10-5

-4.09

-0.10

0.79

150

1.21848

1.45x10-4

-3.84

0.23

1.7

 

1.16188

1.39x10-4

-3.86

0.20

1.6

160

2.63321

3.14x10-4

-3.50

0.65

4.5

 

2.43577

2.91x10-4

-3.54

0.61

4.1

170

5.62734

6.72x10-4

-3.17

1.08

12

 

5.56993

6.65x10-4

-3.18

1.07

12

 

 Vapour Pressure of the Test Item

Temperature
[°C]

log PT

PT
[Pa]

PT
[mm Hg]

20

-7.26

5.4x10-8

4.1x10-10

25

-6.85

1.4x10-7

1.1x10-9

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the substance at 20°C and 25°C was determined to be 5.4E-8 Pa and 1.4E-7 Pa, resp.
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.

A vapour pressure curve was constructed from 5 reference substances. The vapour pressure of the substance at 20°C and 25°C was concluded to be 5.4E-8 Pa and 1.4E-7 Pa, resp.