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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 241-677-4 | CAS number: 17689-77-9
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
Vapour pressure (triacetoxyethylsilane): 5.1 Pa at 20°C
Vapour pressure (ethylsilanetriol): 0.015 Pa at 25°C (QSAR)
Key value for chemical safety assessment
- Vapour pressure:
- 5.1 Pa
- at the temperature of:
- 20 °C
Additional information
A vapour pressure of 5.1 Pa at 20°C was determined by extrapolation for the test substance, the result is considered reliable and selected as key study. This value was supported with a predicted value of 3.8 Pa at 25°C using an appropriate estimation method. Vapour pressure values of 20 Pa and 1.5 Pa at 80°C and 65°C respectively was reported for the substance, the results are also considered reliable. The reliable study with the highest vapour pressure value at 20°C was selected as key study.
In other available studies to which no reliability can be assigned, vapour pressure values of 2.5 Pa (20°C), 53.3 Pa (98°C), 106.6 Pa (108°C), 53.3 Pa (97.5°C), 1.3 Pa (65°C),146.6 Pa (98°C) and limit value of <200 Pa (20°C) and <1000 Pa (50°C) were reported for the substance. The difference in vapour pressure obtained could be due to differences in the purity of the commercial samples tested and the test method used.
The vapour pressure of the hydrolysis product was determined to be 0.015 Pa at 25°C using an acceptable prediction method.
A vapour pressure of 2090 Pa at 25°C was available for acetic acid (Daubert and Danner 1985)
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.
