Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
03 January 2012- 19 March 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study has been performed according to OECD, EC and OPPTS guidelines and according to the principles of GLP.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report Date:
2012

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 (incl. certificate)
Type of method:
effusion method: by loss of weight or by trapping vaporisate
Remarks:
(Isothermal thermogravimetric effusion method)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
- Physical state: Clear colourless/slightly yellow, sticky resin
- Stability under test conditions: Stable
- Storage condition of test material: At room temperature protected from light
-Stability at higher temperatures: Maximum 1 month at 50°C
- General information: Avoid heat, direct sunlight, acid and base

Results and discussion

Vapour pressureopen allclose all
Temp.:
20 °C
Vapour pressure:
0.006 Pa
Remarks on result:
other: 4.5 x 10^-5 mm Hg
Temp.:
25 °C
Vapour pressure:
0.009 Pa
Remarks on result:
other: 7.1 x 10^-5 mm Hg

Any other information on results incl. tables

A representative weight loss curve of the test substance is shown in Figure 6 (see attachment). The plot of the log PTof the test substance as function of the reciprocal temperatures is shown in Figure 7 (see attachment). Equation: log PT,20= -3432 x 1/T + 9.49 (r = 0.994, n = 8).

Table:    Results of the isothermal TGA analysis

   

 

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

logνT

logPT

PT
[Pa]

 

 

 

 

 

 

110

3.113

3.72´10-4

-3.43

0.55

3.6

 

3.065

3.66´10-4

-3.44

0.55

3.5

 

 

 

 

 

 

120

4.736

5.65´10-4

-3.25

0.76

5.8

 

4.178

4.99´10-4

-3.30

0.70

5.0

 

 

 

 

 

 

130

7.271

8.68´10-4

-3.06

0.98

9.5

 

6.879

8.21´10-4

-3.09

0.95

8.9

 

 

 

 

 

 

140

11.33

1.35´10-3

-2.87

1.20

16

 

11.42

1.36´10-3

-2.87

1.20

16

 

 

 

 

 

 

log PT of the test substance at 20°C: -2.22. log PT of the test substance at 25°C: -2.02.

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the test substance at 20°C is 6.0 x10^-3 Pa.
The vapour pressure of the test substance at 25°C is 9.5 x10^-3 Pa.