Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental Starting Date: 2015-06-18; Experimental Completion Date: 2015-07-16
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2015
Report Date:
2015

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
resp. EU Method A.4 (Vapour Pressure)
Deviations:
yes
Remarks:
The test item was stored from the date of receipt to last usage at 15.6 - 25.8 °C. This is considered as uncritical for the outcome of the study as it can be considered htat the storage for only 8 hours was above 25 °C has no impact on the test item.
GLP compliance:
yes (incl. certificate)
Remarks:
Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht; Kaiser-Friedrich-Straße 7; D-55116 Mainz
Type of method:
effusion method: vapour pressure balance

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
other: viscous liquid
Details on test material:
Stabilized EMIM BF4:
Appearance: lightly yellow clear viscous liquid
Purity: 93.36% (EMIM+, HPLC); 86.68% (BF4-, titration); 4.89%(Stabilizer, HPLC)

Results and discussion

Vapour pressureopen allclose all
Temp.:
25 °C
Vapour pressure:
0 Pa
Remarks on result:
other: calculated from regression euqation: y = -507.,7x + 11,657; r = -0.9936
Temp.:
20 °C
Vapour pressure:
0 Pa
Remarks on result:
other: calculated from regression euqation: y = -507.,7x + 11,657; r = -0.9936
Transition / decomposition
Transition / decomposition:
yes
Transition temp.:
418.6 °C

Applicant's summary and conclusion

Executive summary:

The vapour pressure of stabilized EMIM BF4 was determined following EU A.4 using the effusion method (weight loss).

Vaour pressure was examinde at 7 different temperatures. 4 temperatures could be evaluated as thes showed relevant and reproducible weight loss. For these temperatures, 1/T was plotted against log (P)

 Experiment  T  Mean P  Stand.Dev.P  RSD P
 No.  K  Pa  Pa  %
 4  348.2  1.16E-03  4.61E-04  39.9
 5  363.2  5.77E-03  7.59E-04  13.1
 6  378.2  1.35E-02  1.71E-03  12.7
 7  393.2  6.22E-02  3.08E-04  0.5

The graph 1/T vs. log (P) shows a straight line with a correlation of -0.9936

For the test item stabilized EMIM BF4 the following vapour pressures at 20 °C and at 25 °C were calculated from the regression equation:

Vapour pressure at 20 °C:       2.20E-06

Vapour pressure at 25 °C:       4.30E-06