Registration Dossier
Registration Dossier
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EC number: 231-209-7 | CAS number: 7446-81-3
Phototransformation in air
Administrative data
Link to relevant study record(s)
Description of key information
After evaporation or exposure to air, the substance will be rather slowly degraded by photochemical processes.
Key value for chemical safety assessment
Additional information
There are no experimental data on photodegradation in air of sodium acrylate. Therefore, QSAR calculations with EPIWin v4.11 AOP v1.92 were conducted. A half-life of 41.83 h was calculated. To support these information calculations were also made for the structural analogue acrylic acid. The calculated half- life was with 39.59 h a little bit lower but in the same range as for sodium acrylate. Both calculations showed that sodium acrylate and the structural analogue acrylic acid will be rather slowly degraded by photochemical processes after exposure to the air reacting with the photochemically produced hydroxyl radicals. In addition, since sodium acrylate shows a very low vapour pressure (0.000000515 at 25 °C), a significant evaporation is unlikely. Consequently, photodegradation of sodium acrylate under environmental conditions is not of major concern.
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