Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20 Nov 2017 - 20 Dec 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:
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:
- Appearance: White powder
- Storage condition of test material: 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
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]

logνT

logPT

PT
[Pa]

140

0.513232

6.13 x 10-5

-4.21

-0.26

0.56

 

0.614554

7.34 x 10-5

-4.13

-0.16

0.70

150

1.20324

1.44 x 10-4

-3.84

0.22

1.7

 

1.40420

1.68 x 10-4

-3.78

0.30

2.0

160

2.63378

3.14 x 10-4

-3.50

0.65

4.5

 

2.92870

3.50 x 10-4

-3.46

0.71

5.2

170

4.82646

5.76 x 10-4

-3.24

0.99

9.8

 

5.11513

6.11 x 10-4

-3.21

1.02

11

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the substance at 20°C was determined to be 2.8E-8 Pa.
The vapour pressure of the substance at 25°C was determined to be 7.4E-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 140°C, 150°C, 160°C and 170°C. The vapour pressure of the substance at 20°C and 25°C was calculated by extrapolation to be 2.8E-8 Pa and 7.4E-8, resp.