Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
April 2017 - November 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
Vapour Pressure Balance Methodology, 2006
GLP compliance:
yes (incl. certificate)
Type of method:
effusion method: vapour pressure balance

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid
Specific details on test material used for the study:
Batch number: 80100005
Expiration date: 13 October 2018
Purity: 99.8%
Stored at Room temperature (nominally 15 to 25C), dark
Physical state/appearance: White solid

Results and discussion

Vapour pressureopen allclose all
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
0.31 Pa
Test no.:
#2
Temp.:
25 °C
Vapour pressure:
0.32 Pa
Key result
Temp.:
25 °C
Vapour pressure:
0.3 Pa
Remarks on result:
other:
Remarks:
mean vapour pressure

Any other information on results incl. tables

Table 1: Full results of two runs performed.

   Run 1  Run 2
 Correlation (r):  -0.9842 -0.9936 
 Slope: -6579  -6214 
 Intercept: 21.56  20.35 
 Vp (Pa) at 25C 0.31  0.32 

The runs yielded to a mean vapour pressure at 25°C of 0.3 Pa.

Applicant's summary and conclusion

Conclusions:
WS-23 was determined to have a vapour pressure of 0.3 Pa at 25°C.
Executive summary:

The vapour pressure of WS-23 was determined by Vapour pressure balance. WS-23 was determined to have a vapour pressure of 0.3 Pa at 25°C.