Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2007
Report Date:
2007

Materials and methods

Test guideline
Qualifier:
equivalent or similar to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Principles of method if other than guideline:
Dynamic method under nitrogen
GLP compliance:
no
Type of method:
dynamic method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
Purity: 99.6 %

Results and discussion

Vapour pressure
Key result
Temp.:
106.39 °C
Vapour pressure:
0.49 hPa

Any other information on results incl. tables

Results

Temperature

[°C]

Vapour pressure (measurement)

[hPa]

Vapour pressure (calculation)

[hPa]

Aberration

[%]

106.39

0.49

0.496

-1.32

111.15

0.68

0.673

1.04

117.23

0.98

0.978

0.23

129.34

1.98

1.964

0.79

137.13

2.99

2.986

0.12

147.33

4.99

5.005

-0.31

154.38

6.99

7.014

-0.35

162.11

9.95

9.984

-0.34

178.59

20.02

20.085

-0.33

188.88

30.01

30.063

-0.18

202.73

50.01

49.936

0.15

212.48

70.02

69.830

0.27

223.34

99.96

99.527

0.43

246.54

200.0

200.01

-0.01

261.29

300.0

300.70

-0.23

The regression of the results leads with a mean deviation of 0.38 % to the following equation:

ln(p/hPa) = 10.0440 - 4807.25 / (165.98 + t/°C)

The measured values can not be extrapolated downwards to 20 °C, 25 °C and 50 °C, because the melting point (81.02 °C) is on the regression line.

Applicant's summary and conclusion