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EC number: 270-128-1
CAS number: 68411-46-1
If released into water, the UVCB substance can be expected to be poorly biodegradable based on experimental data (OECD 301B). The diphenylamine (DPA) core of the substance is not readily biodegradable. Multiple branched alkyl chains are known to degrade slowly. It is considered that for most isomers (in the focus are those carrying an alkyl chain on both rings of DPA) a fast biodegradation of the DPA core is hindered or impeded for sterical reasons and that biodegradation along the branched alkyl chains is slow. Overall, although biodegradation is expected to occur in the water-soluble fraction, the biodegradation rate is expected to be too small to go below the persistency criteria.
Comparable degradation rates are expected for biodegradation in surface water, sediment and soil.
An available REACH dossier indictes that Diphenylamine(CAS: 122-39-4) is inherently degradable not fulfilling specific criteria.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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