Registration Dossier
Registration Dossier
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EC number: 292-564-1 | CAS number: 90640-45-2
Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
The vapour pressure is set to 1.5 mPa. This is a worst case scenario.
read across from study on diamines with shorter carbons chain lenght.
Key value for chemical safety assessment
- Vapour pressure:
- 0.002 Pa
- at the temperature of:
- 20 °C
Additional information
The determination of the vapour pressure of Amines, N-C16-22-alkyltrimethylenedi- is based on a read-across from the vapour pressure of of N-C12,14 alkyl-1,3-diaminopropane (CAS no 90640-43-0) which has been analysed according to the OECD Guidelines for the Testing of Chemicals, No 104 "Vapour Pressure", by the gas saturation method. LCMS was used for the quantification. The vapour pressure of N-C12,14 alkyl-1,3-diaminopropane was determined to be 1.5 mPa at 20°C.
As a worst case, the vapour pressure is read across from a substance with lower carbon chain distribution from the diamine category.
In N-C12,14 alkyl-1,3-diaminopropane, the n-alkyl part of the molecule has the length of either 12 or 14 carbon atoms. In Amines, N-C16 -22 -alkyltrimethylenedi- the chain lengths vary between 16 and 22 carbon atoms. Since the vapour pressure increases with decreasing hydrophobia in a specific homologue, it is considered as a worst case to read across from a substance with lower carbon chain distribution.
Therefore the vapour pressure of Amines, N-C16 -22 -alkyltrimethylenedi- is deemed to be =< 1.5 x 10^-3 Pa.
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