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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 606-423-2 | CAS number: 200295-52-9
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure of the substance was calculated to be 4.32E-32 Pa at 25 °C using the MPBPVP method of EPISUITE.
Key value for chemical safety assessment
- Vapour pressure:
- 0 Pa
- at the temperature of:
- 25 °C
Additional information
Two reliable results are available, one from an experimental study and one QSAR which are evaluated in a weight-of-evidence approach.. The experimental result is based on a study using the Knudsen effusion method (mass-loss technique), according to the guidelines OECD 104 / EU A.4.
The vapour pressure was found to be 2.2 x 10-4 Pa at 20 °C (1.6 x 10-3 Pa at 50 °C). However this result was evaluated to be questionable although the study followed the guideline. However, limited documentation for this study is available and thus it is reliable with restrictions. It was thought that a substance with a molecular weight of 1115 and higher should have a much lower vapour pressure.
The substance is only produced and marketed in solution. The solvent can be removed without changing the identity of the substance. However for the measurement of the vapour pressure it is essential to remove also any traces of remaining solvent as those have a strong effect on the outcome. It is thought that this is the case in this example, therefore the value measured in the Fonseca study is believed to be questionable.
Therefore a QSAR was generated using the MPBPVP method of EPISUITE. The result of 4.32E-32Pa at 25 °C differs drastically from the measured result, but was evaluated to be more reliable.
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.
