Registration Dossier
Registration Dossier
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EC number: 209-090-8 | CAS number: 555-31-7
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure of aluminium triisopropylate at ambient temperatures is negligible. However, as aluminium triisopropylate is hygroscopic, reacting with water/moisture to form isopropanol and aluminium 3+ species (see hydrolysis) for hazard and risk assessment the vapour pressure of isopropanol formed is more relevant which is reported to be 60.2 hPa at 25 °C (CRC) and 44 hPa at 20 °C (NIOSH) respectively.
Key value for chemical safety assessment
- Vapour pressure:
- 44 hPa
- at the temperature of:
- 20 °C
Additional information
The vapour pressure of aluminium triisopropylate has been reported by Wilhoit et al. in 1957 but actually the boiling temperatures at reduced pressure were used not being meaningful for hazard and risk assessment (highest pressure was 35 Torr at 173.9 °C). Accordingly, the vapour pressure is negligible at ambient temperatures. However, as aluminium triisopropylate is hygroscopic, reacting with water/moisture to form isopropanol and aluminium 3+ species (see hydrolysis) for hazard and risk assessment the vapour pressure of isopropanol formed is more relevant which is reported to be 60.2 hPa at 25 °C (CRC) and 44 hPa at 20 °C (NIOSH) respectively.
For explanation for using surrogate data in a weight of evidence approach see also the document in section 13 IUCLID.
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