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EC number: 800-765-8 | CAS number: 1424149-03-0
The vapour pressure of Pentapropenyl succinic anhydride, reaction products with ethanolamine, sodium and triethanolamine salts is 0.7 Pa at 20 °C.
The experimental value for the total vapour pressure is 1980 Pa (20°C), which is influenced mainly due to the water content. Therefore it can't be taken as appropriate value and the vapour pressure was calculated assuming that the various components contribute to an extent proportional to their mole fractions.
The calculation gives the following result for the vapour pressure at 20 °C:
Total (active + water): 1562 Pa Active: 0.7 Pa
Pentapropenyl succinic anhydride, reaction products with ethanolamine, sodium and triethanolamine salts: 10-8Pa
In conclusion the approximations in the calculation do not result in a large error, so that a reasonable estimate of the vapour pressure of the active components is obtained.
Since the calculated vapour pressure for the active is mainly related to the pentapropylene impurity, for the exposure assessment of Pentapropenyl succinic anhydride, reaction products with ethanolamine, sodium and triethanolamine salts the vapour pressure of this component ( 10-8Pa) will be used.
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