Registration Dossier
Registration Dossier
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EC number: 231-209-7 | CAS number: 7446-81-3
Endpoint summary
Administrative data
Description of key information
Based on information of the structural analogue Acrylic acid, sodium acrlyate will not adsorb to soil and will distribute in water. There is no evidence for persitence or bioaccumulation potential of sodium acrylate.
Additional information
There are no experimental studies available with NaA (sodium acrylate) to cover the required endpoints to evaluate a potential environmental hazard. Due to the chemical properties of the substance it will dissociate immediately in aqueous media. The resulting ion is equivalent to the AA (acrylic acid) ion after dissociation. Since charged molecules have a lower ability to pass biological membranes than neutral species a lower bioavailability of the ionic species is expected. In media with low pH values the NaA ion will react almost completely to AA (Hendersson Hasselbach calculations).Therfore, the assessment of environmental fate and pathways for the present product is mainly based on the structural analogue acrylic acid (CAS# 79-10-7). According to the different investigations on acrylic acid, abiotic degradation in water, air or soil is unlikely. Furthermore, due to EpiWin calculations and analytical measurements on acrylic acid, adsorption is not expected. Consequently, Mackay Level 1 model showed that the substance will be mainly distributed into water. Reliable experimental data o tzhe structural analogue AA and supporting QSAR calculations with NaA indicate the ready biodegradability of NaA. The low log Kow of NaA (log Kow = -3.37) and AA (log Know = 0.46) give no hint for bioaccumulative potential of NaA. This was confirmed by QSAR calculations for both substances.
There is no evidence for persistence or bioaccumulative potential of NaA.
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