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
No bioaccumulation of sodium acrylate is expected.
Additional information
No experimental data on the test substance is available. Therefore, the evaluation of the endpoint bioaccumulation is based on a weight of evidence approach using the data of the structural analogue acrylic acid (CAS 79-10-7) (for WoE information, see chapter 13.2).
Sodium acrylate (NaA) has a low log Kow of -3.37 (see chapter 4.7). This was calculated with the QSAR model KOWWIN v1.68, included in EPI Suite v.4.11 (2) and was falling in the models AD. Therefore, the calculation can be considered reliable. In accordance with the B- criterion defined in REACH annex XIII, bioaccumulation of substances with a low log KOW is unlikely.
Due to the fast dissociation of NaA in aqueous environment (see Henderson-Hasselbach calculation), it is not possible to conduct experimental studies in aqueous medium. Therefore, the data from the structural analogue and reaction product under acidic conditions acrylic acid were used. Valid QSAR calculations of the log Kow and the BCF for acrylic acid with EPI Suite (US EPA). The log Know of acrylic acid was within the same range as calculated for NaA (see WoE justification in chapter 13.2). the calculations reveal BCF factors < 4 L/kg.
In conclusion no bioaccumulation of NaA is expected.
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