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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
6 Jan 2006 to 23 Jan 2006
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
other: EC-Guideline 92/69/EWG,A4
Deviations:
not specified
GLP compliance:
yes
Type of method:
gas saturation method
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
< 0 hPa
Remarks on result:
other: Estimated from VP curve.
Key result
Test no.:
#2
Temp.:
25 °C
Vapour pressure:
< 0 hPa
Remarks on result:
other: Estimated from VP curve.
Key result
Test no.:
#3
Temp.:
50 °C
Vapour pressure:
0 hPa
Key result
Test no.:
#4
Temp.:
27.02 °C
Vapour pressure:
0 hPa
Key result
Test no.:
#5
Temp.:
66.58 °C
Vapour pressure:
0.001 hPa
Key result
Vapour pressure:
0 hPa

Individual Results

Temperature (°C)

Temperature,

Corrected

(°C)

Temperature [1/K*104]

Vapor Pressure measured [hPa]

Vapor Pressure regression

[hPa]

Deviation

(%)

27.2

27.02

33.31

6.37E-06

6.38E-06

-0.2

36.9

36.65

32.28

2.62E-05

2.58E-05

1.5

56.9

56.58

30.33

2.92E-04

2.99E-04

-2.5

66.9

66.58

29.44

6.71E-04

6.99E-04

-4.0

Final Result

Results of regression calculation:

Temperature (°C)

Vapor Pressure [hPa]

Phase

20

< 1.0E-05

Solid

25

< 1.0E-05

Solid

50

1.66E-04

Liquid

27.02

6.38E-06

Solid

66.58

6.99E-04

Liquid

Description of key information

Vapor pressure is < 1.0E-5 hPa at 25 °C (EU Method A.4; gas saturation method).

Key value for chemical safety assessment

Additional information