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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
15.08.1990 to 03.12.1990
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: vapour pressure balance
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
23.5 Pa
Test no.:
#2
Temp.:
50 °C
Vapour pressure:
167.3 Pa
Test no.:
#3
Temp.:
100 °C
Vapour pressure:
22.827 hPa

(a) Summary

 

The vapour pressure at 20 °C was calculated to be 23.3 Pa.

The vapour pressure at 50 °C was calculated to be 167.3 Pa.

The vapour pressure at 100 °C was calculated to be 2282.7 Pa.

 

(b) presentation of the results including calculation and statistical methods 

Vapour pressure at 20 °C (293 K) 

1. measurement:         28 Pa

2. measurement:         23 Pa

3. measurement:         19 Pa 

Mean:                        23.3 Pa ± 4.5 Pa

 

Vapour pressure at 50 °C (323 K) 

1. measurement:         182 Pa

2. measurement:         184 Pa

3. measurement:          136 Pa 

Mean:                        167.3 Pa ± 27.1 Pa

 

Vapour pressure at 100 °C (373 K) 

1. measurement:         2159 Pa

2. measurement:         2860 Pa

3. measurement:         1829 Pa 

Mean:                        2282.7 Pa ± 526.5 Pa

 

The relative standard deviation of the results was 19 % (at 293 K), 16 % (at 323 K) and 23 % (at 373 K). The first two values were within the repeatability of the method indicated in the EEC Directive. The third value was outside. However, in this case the measured value was too high for the vapour pressure balance method.

Conclusions:
The vapour pressure at 20 °C was determined to be 23.3 Pa and at 50 °C to be 22 Pa respectively.
Executive summary:

A study was conducted according to Regulation (EC) No 440/2008 method A.4 to determine the vapour pressure of the test item. The vapour pressure of the test item was determined at three different temperatures (20, 50 and 100 °C) using the effusion method (weight loss). The relative standard deviation of the results is 19 % (at 293 K), 16 % (at 323 K) and 23 % (at 373 K). The vapour pressure at 20 °C was determined to be 23.3 Pa and at 50 °C to be 167.3 Pa respectively.

Description of key information

The vapour pressure at 20 °C was determined to be 23.3 Pa and at 50 °C to be 167.3 Pa respectively (reference 4.6 -1).

Key value for chemical safety assessment

Vapour pressure:
23.3 Pa
at the temperature of:
20 °C

Additional information

A study was conducted according to Regulation (EC) No 440/2008 method A.4 to determine the vapour pressure of the test item (reference 4.6 -1). The vapour pressure of the test item was determined at three different temperatures (20, 50 and 100 °C) using the effusion method (weight loss). The relative standard deviation of the results is 19 % (at 293 K), 16 % (at 323 K) and 23 % (at 373 K). The vapour pressure at 20 °C was determined to be 23.3 Pa and at 50 °C to be 167.3 Pa respectively.