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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Remarks:
FINAL REPORT STUDY STILL REQUIRED
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 June 2018 to 05 July 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: vapour pressure balance
Specific details on test material used for the study:
Batch number: 99101243
Purity: 76.39% (the balance being water)
Expiry Date: 23 November 2019
In order to achieve equilibrium in this method the test item was put under vacuum resulting in removal of water. As such the vapour value relates to the composition of the registered substance as reported in section 1.2 of this registration dossier.
Key result
Temp.:
20 °C
Vapour pressure:
ca. 0.007 Pa
Key result
Temp.:
25 °C
Vapour pressure:
ca. 0.009 Pa
Key result
Temp.:
50 °C
Vapour pressure:
ca. 0.019 Pa

Run

Log₁₀ vapour pressure

20 °C

25 °C

50 °C

4

-2.11

-2.02

-1.68

5

-2.10

-2.04

-1.68

6

-2.08

-2.01

-1.72

7

-2.22

-2.12

-1.73

8

-2.15

-2.07

-1.77

9

-2.09

-2.04

-1.76

10

-2.24

-2.15

-1.78

Mean

-2.14

-2.06

-1.73

Vapor Pressure

7.2E-03 Pa

8.63E-3 Pa

1.9E-02 Pa

 

The test item did not change in appearance under the conditions used in the determination. A total of 10 runs were completed for the main sequence. Equilibrium was deemed to have been reached over the final 7 runs, thus, the final 7 runs have been used to calculate the vapor pressure. Some of the runs required points to be removed due to being erroneous.

Conclusions:
The vapor pressure of the substance has been determined to be 8.6E-3 Pa at 25 °C, measured using the vapor pressure balance method, in a GLP study designed to be compatible with EC Method A.4 and OECD 104. From the test data, the vapour pressure of the substance at 25 °C and 50 °C was calculated to be 7.2E-3 Pa and 1.9E-2 Pa, respectively, using the same method used in the study.
Executive summary:

The vapor pressure of the substance has been determined to be 8.6E-3 Pa at 25 °C, measured using the vapor pressure balance method, in a GLP study designed to be compatible with EC Method A.4 and OECD 104. From the test data, the vapour pressure at 25 °C and 50 °C was calculated to be 7.2E-3 Pa and 1.9E-2 Pa, respectively, using the same method used in the study.

Description of key information

The vapor pressure of the test item has been determined to be 8.6 mPa at 25 °C

Key value for chemical safety assessment

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

Additional information