Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 620-455-4 | CAS number: 524709-74-8
Vapour pressure
Administrative data
Link to relevant study record(s)
- Endpoint:
- vapour pressure
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 04.-05.09.2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.4 (Vapour Pressure)
- GLP compliance:
- no
- Type of method:
- effusion method: vapour pressure balance
- Key result
- Temp.:
- 20 °C
- Vapour pressure:
- 0 Pa
- Key result
- Temp.:
- 25 °C
- Vapour pressure:
- 0 Pa
- Key result
- Temp.:
- 50 °C
- Vapour pressure:
- 0.002 Pa
- Conclusions:
- The vapour pressure of the test item was determined to be 1.8E-4 Pa (20 °C), 2.7E-4 Pa (25 °C) and 1.7E-3 Pa (50 °C).
- Executive summary:
A study was performed according to OECD TG 104 and Commission Regulation (EC) No. 440/2008, method A.4 in order to determine the vapour pressure of the test item by using the effusion method. The vapour pressure was measured using the Knudsen cell at various temperatures between about 30 and 80 °C. The vapour pressures of the test item at 20, 25 and 50 °C were extrapolated by using the Antoine constants with following results: 1.8E-4 Pa (20 °C), 2.7E-4 Pa (25 °C) and 1.7E-3 Pa (50 °C).
Reference
The vapour pressure was measured in the temperature range of 30 °C to 80 °C. The measured vapour pressures at the corresponding temperatures are listed in Table 1. After the measurement a mass loss of < 1% (w/w) was determined. A molecular mass of 340.25 g/mol ws used for the evaluation.
Table 1: Measured vapour pressures and corresponding temperatures
Temperature /°C | Vapour pressure / hPa |
30 | 6.5 x 10-6 |
40 | 2.9 x 10-6 |
50 | 1.8 x 10-5 |
60 | 3.8 x 10-5 |
70 | 3.8 x 10-5 |
80 | 1.4 x 10-4 |
The values for 20, 25 and 50 °C are calculated, using the Antoine constants A, B and C as shown in Table 2.
Table 2: Antoine parameters
A | 4.63827 |
B | -3043.99 |
C | 273.15 |
Table 3 : Final vapour pressures
T/°C | p/hPa |
20 | 1.8 x 10-6 |
25 | 2.7 x 10-6 |
50 | 1.7 x 10-5 |
Description of key information
A study was performed according to OECD TG 104 and Commission Regulation (EC) No. 440/2008, method A.4 in order to determine the vapour pressure of the test item by using the effusion method. The vapour pressure was measured at various temperatures between 30 and 80 °C. The vapour pressures of the test item at 20, 25 and 50 °C were extrapolated by using the Antoine constants with following results:
1.8E-4 Pa (20 °C), 2.7E-4 Pa (25 °C) and 1.7E-3 Pa (50 °C).
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
