Registration Dossier
Registration Dossier
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EC number: 213-607-2 | CAS number: 993-13-5
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Data waiving:
- other justification
- Justification for data waiving:
- other:
Reference
Description of key information
A valid Zahn-Wellens Test was conducted for evaluating the inherent biodegradability of test item methylphosphonic acid. The results expressed as COD and % of biodegradation for the test item and the reference item are reported. Based on ECHA PBT guidance document, in case of biodegradability <20 % in an inherent biodegradability study the substance shall be considered as persistent without the need for further testing. With an inherent biodegradability of 21 - 24 % the substance shall be considered as persistent for the PBT discussion. A study on ready biodegradability (according to OECD 301) cannot be expected to deliver any meaningful added information and shall therefore be waived. Due to lack of inherent biodegradability the substance shall be considered as persistent for the PBT discussion.
Key value for chemical safety assessment
- Biodegradation in water:
- under test conditions no biodegradation observed
Additional information
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.
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