Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Vapour pressure

Currently viewing:

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
no
Type of method:
gas saturation method
Key result
Temp.:
20 °C
Vapour pressure:
0.21 hPa
Remarks on result:
other: calculated from the regression equation
Key result
Temp.:
25 °C
Vapour pressure:
0.31 hPa
Remarks on result:
other: calculated from the regression equation
Key result
Temp.:
50 °C
Vapour pressure:
1.92 hPa
Remarks on result:
other: calculated from the regression equation

Results:

Temperature

t/°C

Pressure (measured)

p/hPa

Pressure (calculated)

p/hPa

Aberration

%
 29,7

0,40 

0,454

 -11,98

 29,7

 0,55

 0,454

 21,02

 39,1

 0,87

 0,906

 -3,99

 39,1

 0,83

0,906 

 -8,41

 48,8

 1,78

 1,771

 0,52

 48,8

 1,88

 1,771

 6,17

1:

ln(p/Pa) = -1363,17553 + 57397,7861 / T + 206,09998*lnT [T] in Kelvin

mean deviation; : 7,03 %

Scope 29,7 bis 48,8 °C

2:

ln(p/hPa) = 22,1364 - 6942,85 / (273,15 + t) [t] in °C

mean deviation: 8,68 %

Scope 29,7 bis 48,8 °C

Measurement error: Approx.10% of measured value
Conclusions:
The density of the test substance is 0.21, 0.31, and 1.92 hPa at 20, 25, and 50°C, respectively.
Executive summary:

The density of the test substance was measured by gas saturation using a method equivalent to OECD Guideline 104. The density of the test substance is 0.21, 0.31, and 1.92 hPa at 20, 25, and 50°C, respectively.

Description of key information

equivalent to OECD Guideline 104

Key value for chemical safety assessment

Vapour pressure:
0.21 hPa
at the temperature of:
20 °C

Additional information

0.32 hPa at 25°C

1.92 hPa at 50°C