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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 701-361-3 | CAS number: -
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure of the substance could not be conducted as the substance decompose during measurement.
The vapour pressure of the substance was calculated to be 0.00000000561 hPa at 25 °C
Key value for chemical safety assessment
- Vapour pressure:
- 0 hPa
- at the temperature of:
- 25 °C
Additional information
The study does not need to be conducted as the substance decompose during measurement.
Thus the experimental determination was replaced by an appropriate calculation method. In addition two studies using the gas suturation method and the static method were performed.
The vapour pressure of the test substance was estimated using EPISUITE v 4.10. The vapour pressure of the test substance was calculated based on the estimated vapour pressures of its constituents. Modified Grain method at 25°C was used for estimations. Based on the estimations, the vapour pressure of the test substance was calculated to be 0.00000000561 hPa at 25°C.
The vapour pressure was also conducted according to the gas satutation method where a vapour pressue of 0.0007 hPa at 50 °C was measured. As can be seen from the measurement results, the vapor pressure decreases with increasing measurement time.This is due to levels of volatile components (e.g., moisture) that are preferentially discharged. For more accurate vapor pressure measurements would be required at higher temperatures.This was not possible due to thermal changes (polymerization) of the samples.The indicated vapor pressures are therefore subject to a high measurement uncertainty.
As the substance is an UVCB another vapour pressure study was conducted in accordance with the OECD Guideline for the Testing of Chemicals 104: "Vapour pressure" using the static method, to avoid segregation of components during the measurement and to get the vapour pressure of the substance as it is. The GLP study determined the vapour pressure to be 5.9 hPa at 20 °C, 7.6 hPa at 25 °C and 23.6 hPa at 50 °C.
To describe the vapour pressure of the pure substance the calculated value was chosen as key value.
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.
