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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
17 June 2015 - 16 July 2015
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:
effusion method: isothermal thermogravimetry
Temp.:
20 °C
Vapour pressure:
0.097 Pa
Remarks on result:
other: 7.3E-04 mm Hg
Key result
Temp.:
25 °C
Vapour pressure:
0.19 Pa
Remarks on result:
other: 1.4E-03 mm Hg

Table: Results of the isothermal TGA analysis (test substance)

Temperature

[°C]

Weight loss[µg/min]

νT

[g/cm2/h]

log νT

log PT

PT

[Pa]

 

 

 

 

 

 

60

6.860

8.19E-04

-3.09

1.04

11

 

6.990

8.34E-04

-3.08

1.05

11

 

 

 

 

 

70

17.26

2.06E-03

-2.69

1.51

32

 

17.38

2.07E-03

-2.68

1.51

32

 

 

 

 

 

 

80

39.05

4.66E-03

-2.33

1.92

84

 

39.19

4.68E-03

-2.33

1.92

84

 

 

 

 

 

 

90

81.91

9.78E-03

-2.01

2.30

2.0E02

 

79.92

9.54E-03

-2.02

2.29

1.9E02

 

 

 

 

 

 

Conclusions:
Using the isothermal thermogravimetric effusion method, the vapour pressure of Dibutyl itaconate at 25°C has been determined as 0.19 Pa (0.097 Pa at 20°C). The study is performed in accordance with EC A.4, OECD 104 and EPA OPPTS 830.7950 guidelines and in compliance with GLP.

Description of key information

Using the isothermal thermogravimetric effusion method, the vapour pressure of Dibutyl itaconate at 25°C has been determined as 0.19 Pa (0.097 Pa at 20°C). The study is performed in accordance with EC A.4, OECD 104 and EPA OPPTS 830.7950 guidelines and in compliance with GLP.

Key value for chemical safety assessment

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

Additional information