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:
2014-05-21 to 2014-06-17
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
adopted 23 March 2006
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
dated 31 May 2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
LAUS GmbH Auf der Schafweide 20, D-67489 Kirrweiler, Germany
Type of method:
effusion method: by loss of weight or by trapping vaporisate
Key result
Temp.:
20 °C
Vapour pressure:
0 Pa
Remarks on result:
other: Calculated value based on the regression equation.
Key result
Temp.:
25 °C
Vapour pressure:
0 Pa
Remarks on result:
other: Calculated value based on the regression equation.

The measured values for temperature and vapour pressure were evaluated as follows:

Parameter

T

P

1/T

log P

Unit

K

Pa

1/K

log Pa

Values

333.2

6.93E-03

3.0012E-03

-2.1591

348.2

2.86E-02

2.8719E-03

-1.5431

363.2

1.36E-01

2.7533E-03

-0.8671

378.2

4.41E-01

2.6441E-03

-0.3557

 

A graph with log P vs. 1/T was plotted. Since the values were correlated by a linear rela-tion, the data could be fitted by linear regression 

Parameter

Value

Slope

-5114.8

Intercept

13.1804

Correlation Coefficient r

-0.9993

Coefficient of Determination r2

0.9986

 

The following vapour pressures were determined experimentally and considered as valid (mean and standard deviation given): 

T

T

P

Stand. Dev. P

RSD P

°C

K

Pa

Pa

%

60.0

333.2

6.93E-03

9.34E-04

13.5

75.0

348.2

2.86E-02

1.70E-03

5.9

90.0

363.2

1.36E-01

1.56E-02

11.5

105.0

378.2

4.41E-01

4.79E-03

1.09

 

 

Conclusions:
The vapour pressure of the test item was determined to be 0.000054 Pa at 20 °C and 0.000106 Pa at 25 °C respectively.
Executive summary:

A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item SIKA Hardener MTJ. The vapour pressure of the test item SIKA Hardener MTJ was determined at three different temperatures (30, 45 and 60 °C) using the effusion method (weight loss). All measured values showed good reproducibility, giving relative standard deviations of less than 25 %, and perfect correlation. Therefore, the result of the test according to the guideline criteria was considered to be valid. The vapour pressure was calculated using the linear regression equation of the Log P versus 1/T function. The vapour pressure was calculated to be 0.000054 Pa at 20 °C and 0.000106 Pa at 25 °C respectively.

Description of key information

The vapour pressure of the test item was determined to be 0.000054 Pa at 20 °C and 0.000106 Pa at 25 °C respectively.

Key value for chemical safety assessment

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

Additional information

A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item SIKA Hardener MTJ. The vapour pressure of the test item SIKA Hardener AI was determined at three different temperatures (30, 45 and 60 °C) using the effusion method (weight loss). All measured values showed good reproducibility, giving relative standard deviations of less than 25 %, and perfect correlation. Therefore, the result of the test according to the guideline criteria was considered to be valid. The vapour pressure was calculated using the linear regression equation of the Log P versus 1/T function. The vapour pressure was calculated to be 0.000054 Pa at 20 °C and 0.000106 Pa at 25 °C respectively.