Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Additional information

Sodium 2-biphenylate is not stable in the environment. The substance will dissociate on contact with water forming NaOH and 2-phenylphenol. Under environmentally relevant conditions the substance will dissociate and the neutral from of 2-phenylphenol will prevail. The available studies on the adsorption potential of 2-phenylphenol determined log KOC values <3 indicating a moderate mobility of the substance in soil. Supporting QSAR calculations with sodium 2-biphenylate predicted a low adsorption potential of the substance (estimated log Koc of 2.72 based on log Pow).

The water solubility of 2-phenylphenol is pH dependent. At environmentally relevant pH (pH 5-9) the water solubility is < 1 mg/L (range: 0.53 – 0.64 mg/L at pH 5-9). Transport and accumulation in natural water bodies is considered not relevant. Volatilisation of sodium 2-biphenylate or 2-phenylphenol from STP or natural water bodies is not likely due to the low volatilization potential (VP 1.2 Pa and 0.474 Pa at 20 °C, respectively). However, the substance is not expected to accumulate and persist in the environment due to its ready biodegradability.