Reaction mass of ethoxylated N-oleyl-1,3-propanediamine, hydrofluorides of and ethoxylated N-palmityl-1,3-propanediamine, hydrofluorides of and ethoxylated N-stearyl-1,3-propanediamine, hydrofluorides of and olaflur

Vapour pressure

Description of key information

The vapour pressure of Olaflur was estimated based on the free base as evaluation technically not applicable for a salt. For Olaflur a vapour pressure range was estimated on basis of the shortest and longest fatty amine chain using the estimation program MPBPWIN v.1.43, part of EPIWIN, resulting in a range of 4.21E-014 to 5.58E-016 mbar at 25 °C.

In addition, a vapour pressure of the solvent-free Olaflur was evaluated by using a modified static method, resulting in a vapour pressure < 0.1 mbar at 20 °C, which is in line with the results estimated.  The vapour pressure of Olaflur was estimated based on the free base as technically not feasible for salt. Direct measurement methods, e.g. the gas saturation method cannot be performed, as it is not usable for multi-constituent substances.

Key value for chemical safety assessment

Vapour pressure:

0 Pa

at the temperature of:

25 °C

Additional information

For the multi-constituent substance Olaflur a vapour pressure range was estimated on basis of the SMILES codes for the shortest fatty amine chain myristyl (R= C14H29) as lower limit value (worst case approach) as well as for the longest fatty amine chain stearyl (R= C18H37) as upper limit value. Using the estimation program MPBPWIN v.1.43, part of EPIWIN, a vapour pressure at 25 °C in the range of 4.21E-014 to 5.58E-016 mbar was derived based on the Modified Grain Method. These calculated values were in line with the experimental data available. The vapour pressure of the test item was determined by a modified static method. The measured and environmental relevant vapour pressure of Olaflur defined as mixture of compounds obtained by a manufacturing process and containing 5% ethanol is 24 +/- 5 mbar at 20°C and 72 +/- 5 mbar at 30 °C. The estimation of the vapour pressure for solvent-free Olaflur is based on the vapour pressure of the free amine base of Olaflur, Tris-(2-hydroxyethyl)-N-Tallow-diaminopropane, CAS no. 90367-27-4, and estimated to be < 0.1 mbar at 20 °C. Olaflur is a ionic salt (= fluoride salt) of this free amine base and based on literature data ionic salts have a lower vapour pressure as their components in ionised state. Thus, the vapour pressure of Olaflur was estimated based on the free base as technically not feasible for a salt. Direct measurement methods, e.g. the gas saturation method cannot be performed, as it is not usable for multi-constituent substances.