1,4-phenylenebis(nitrilo-2,2-dimethylprop-1-yl-3-ylidene) didodecanoate

Vapour pressure

Link to relevant study record(s)

Reference

Endpoint:

vapour pressure

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2015-06-18 to 2015-06-30

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Version / remarks:

dated 31 May 2008

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

adopted 23. Mar 2006

Deviations:

no

Qualifier:

according to guideline

Guideline:

EPA OPPTS 830.7950 (Vapor Pressure)

Version / remarks:

dated August 1996

Deviations:

no

GLP compliance:

yes (incl. QA statement)

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:

0.004 Pa

Key result

Temp.:

25 °C

Vapour pressure:

0.005 Pa

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

Parameter	T	Mean P	1/T	log P
Unit	K	Pa	1/K	log Pa
Value	318.2	1.00E-02	3.1427E-03	-1.9982
	333.2	1.52E-02	3.0012E-03	-1.8194
	348.2	2.37E-02	2.8719E-03	-1.6254

 

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

Parameter	Value
Slope	-1375.1
Intercept	2.3182
Correlation Coefficient r	-0.9988
Coefficient of Determination r^2	0.9976

 

 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	%
45.0	318.2	1.00E-02	2.31E-03	23.0%
60.0	333.2	1.52E-02	3.32E-03	21.9%
75.0	348.2	2.37E-02	2.90E-03	12.2%

 

 

Conclusions:

The vapour pressure of the test item was determined to be 0.00424 Pa at 20 °C and 0.00508 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. The vapour pressure of the test item was determined at three different temperatures (45, 60 and 75 °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 0.00424 Pa at 20 °C and 0.00508 Pa at 25 °C respectively.

Description of key information

The vapour pressure of the test item was determined to be 0.00424 Pa at 20 °C and 0.00508 Pa at 25 °C respectively.

Key value for chemical safety assessment

Vapour pressure:

0.004 Pa

at the temperature of:

20 °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 LPP. The vapour pressure of the test item SIKA Hardener LPP was determined at three different temperatures (45, 60 and 75 °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 0.00424 Pa at 20 °C and 0.00508 Pa at 25 °C respectively.