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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study performed under GLP. All relevant validity criteria were met.
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to
Guideline:
other: OECD Test Guideline 113 (1981) Screening Test for Thermal Stability and Stability in Air
Deviations:
not specified
Qualifier:
equivalent or similar to
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Remarks:
inspected January 2013; signature: March 2013
Type of method:
dynamic method
Temp.:
20 °C
Vapour pressure:
25 Pa
Temp.:
25 °C
Vapour pressure:
34 Pa
Temp.:
50 °C
Vapour pressure:
120 Pa

Thermal Stability

The DSC run in a closed glass crucible under an inert atmosphere was determined. The test item showed an exothermic effect starting at temperature of 240 °C.

Dynamic method: Vapour-liquid equilibrium (VLE)

The vapour pressure was measured in the temperature range of 108.1 to 170.2 °C. The measured vapour pressure values together with the measured temperatures are listed.

Table 1: Results of the dynamic method

No.

Temperature / °C

Vapour pressure / hPa

Remark

1

108.1

12.8

measured up

2

122.4

19.5

measured up

3

138.4

29.6

measured up

4

148.4

39.5

measured up

5

155.8

49.3

measured up

6

170.2

79.0

measured up

7

163.8

64.1

measured down

8

148.4

39.7

measured down

9

132.3

25.1

measured down

 The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C.

Conclusions:
The vapour pressure of the test substance was determined to be at 20°C: 25 Pa and at 25°C: 34 Pa respectively
Executive summary:

The vapour pressure was determined using by the dynamic method in EU Method A.4 and OECD TG 104. The vapour pressure of the test substance was determined to be at test substance was determined to be at 20°C: 25 Pa and at 25°C: 34 Pa respectively.

Description of key information

Vapour Pressure: 25 Pa at 20 °C and 34 Pa at 25 °C, EU Method A.4, 2015

Key value for chemical safety assessment

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

Additional information

Key data : EU Method A.4, 2015 : The vapour pressure was determined using by the dynamic method in EU Method A.4 and OECD TG 104. The vapour pressure of the test substance was determined to be at test substance was determined to be at 20°C: 25 Pa and at 25°C: 34 Pa respectively.