Registration Dossier

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
November 27th, 2012 - April 7th, 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
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:
other: Effusion method: Isothermal thermogravimetry
Key result
Temp.:
25 °C
Vapour pressure:
0.003 Pa
Remarks on result:
other: 1.9E-5 mm Hg
Temp.:
20 °C
Vapour pressure:
0.001 Pa
Remarks on result:
other: 1.0E-5 mm Hg

Table:  Results of the isothermal TGA analysis

 

Temperature [°C]

Weight loss [µg/min]

νT [g/cm2/h]

log νT

log PT

PT [Pa]

170

121.2

1.45 E-2

-1.84

2.38

2.4 E2

130.7

1.56 E-2

-1.81

2.42

2.6 E2

180

209.4

2.50 E-2

-1.60

2.63

4.3 E2

214.7

2.56 E-2

-1.59

2.64

4.4 E2

190

333.5

3.98 E-2

-1.40

2.84

7.0 E2

331.0

3.95 E-2

-1.40

2.84

6.9 E2

 

Log PT 20°C= -2.86

Log PT 25°C= -2.60

Conclusions:
The vapour pressure of the substance was determined to be 2.5E-3 Pa at 25°C (1.4E-3 Pa at 20°C) using the isothermal thermogravimetric effusion method (in accordance with EC A.4, OECD 104 and EPA OPPTS 830.7950 and in compliance with GLP).

Description of key information

The vapour pressure of the substance

was determined to be 2.5E-3 Pa at 25°C

(1.4E-3 Pa at 20°C) using the

isothermal thermogravimetric

effusion method (in accordance

with EC A.4, OECD 104 and

EPA OPPTS 830.7950 and in compliance with GLP).

Key value for chemical safety assessment

Vapour pressure:
0.003 Pa
at the temperature of:
25 °C

Additional information