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EC number: 614-637-2 | CAS number: 68603-75-8
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Vapour pressure
Administrative data
Link to relevant study record(s)
Description of key information
- vapour pressure: The vapour pressure of the Amines, N-tallow alkyltrimethylenedi-, propoxylated at 20°C is =< 1.5 x 10^-3 Pa, read across from study Akzo Nobel 2009/K1 KS/Vapour pressure, read across from n-alkyl diamines
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-tallow alkyltrimethylenedi-, propoxylated 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.
Read across to Amines, N-tallow alkyltrimethylenedi-, propoxylated:
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-tallow alkyltrimethylenedi-, propoxylated the chain lengths vary between 12 and 18 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. In addition, in Amines, N-tallow alkyltrimethylenedi-, propoxylated the amine groups are partly propoxylated, therby elongation the length of the molecule further. Furthermore, in terms of hydrophilic groups, the vapour pressure is higher over the diamine than over Amines, N-tallow alkyltrimethylenedi-, propoxylated.
Therefore the vapour pressure of Amines, N-tallow alkyltrimethylenedi-, propoxylated is deemed to be =< 1.5 x 10^-3 Pa.
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