Registration Dossier
Registration Dossier
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EC number: 500-165-3 | CAS number: 66455-14-9 1 - 2.5 moles ethoxylated
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
< 1 Pa at 25 °C
Key value for chemical safety assessment
Additional information
The vapour pressure of alcohols, C12 -13, ethoxylated, 1 -2.5 EO was deduced from three studies of structural similar substances.
Literature values for dodecan-1 -ol and tridecan-1 -ol (ethoxylation degree 0) show a vapour pressure of 0.113 Pa and 0.0581 Pa at 25 °C respectively. The study by Conte for the test substance alcohols, C12 -13, ethoxylated, 1 -5 EO (NFT 20-048, static method) indicates a vapour pressure < 5 Pa at 20 °C.
Vapour pressure is a property which shows a negative correlation with the number of CH2 groups. The higher the number of CH2 groups, the lower the vapour pressure. There is also a correlation between vapour pressure and the degree of ethoxylation. Calculations show the higher the degree of ethoxylation the lower the vapour pressure.
Therefore the vapour pressure of alcohols, C12 -13, ethoxylated, 1 -2.5 EO is deduced to be < 1 Pa at 25 °C.
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