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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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
Study period:
25 to 29 July 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
GLP compliance:
no
Type of method:
dynamic method
Key result
Temp.:
20 °C
Vapour pressure:
0.08 hPa
Key result
Temp.:
25 °C
Vapour pressure:
0.11 hPa
Key result
Temp.:
50 °C
Vapour pressure:
0.47 hPa

Thermal Stability

The test item showed a beginning of an exothermic effect at a temperature of 250 °C with an energy of > -60 J/g. The measurement was terminated at 300 °C.

 

Results of the DSC-measurements on thermal stability

Sample weight / mg

Start of effect / °C

Energy / J/g

9.38

250

>-60

 

Dynamic method: Vapour-liquid equilibrium (VLE)

The vapour pressure was measured in the temperature range of 124.9 to 186.6 °C. The measured vapour pressure values together with the measured temperatures are listed in the following table.

 

Results of the dynamic method

No.

Temperature / °C

Vapour pressure / hPa

Remark

1

124.9

11.8

measured up

2

149.0

24.6

measured up

3

161.2

34.6

measured up

4

174.7

49.9

measured up

5

179.5

59.5

measured up

6

186.6

74.7

measured up

7

183.3

67.1

measured down

8

175.9

54.7

measured down

9

156.9

29.5

measured down

 

From the measured data points of the vapour pressure curve, the constants A, B and C of the Antoine equation were calculated:

 

Log10 p = A + B / ( C + θ )

 

A = 9.0189

B = -2374.84

C = 273.15

 

Final Results

The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20, 25 and 50 °C, according to Regulation EC No. 440/2008 Method A.4.

Temperature / °C

Vapour pressure / hPa

20

0.08

25

0.11

50

 0.47

Conclusions:
Vapour pressure values of 0.08 hPa (at 20 °C), 0.11 hPa (at 25 °C) and 0.47 hPa (at 50 °C) were determined for the test substance according to E.U. Method A.4.

Description of key information

Vapour pressure: 0.08 hPa at 20 °C, 0.11 hPa at 25 °C, and 0.47 hPa at 50 °C (EU Method A.4, dynamic method)

Key value for chemical safety assessment

Vapour pressure:
0.11 hPa
at the temperature of:
25 °C

Additional information

According to Regulation EC No. 440/2008 Method A.4, the vapour pressure values of the test item for the temperatures 20, 25 and 50 °C were calculated by extrapolation of the measured vapour pressure curve.