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EC number: 223-267-7
CAS number: 3794-83-0
The substance is not readily biodegradable, based on the results of the
The ready biodegradability study using HEDP acid was selected as the key
study (Handley & Mead, 1992). This study followed the 5 day Biological
Oxygen Demand (BOD5) method (similar to OECD 301). The study is
considered to be a reliable study to demonstrate that the substance is
not readily biodegradable.
A number of supporting studies are available for the acid form and for
the sodium salt of HEDP associated with WWTP simulation, aerobic and
anaerobic studies using radiolabelling etc. All of the available
evidence supports a lack of biodegradability even where pre-adapted
inoculum is used, though in some cases removal from the system by
adsorption processes has occurred.
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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