Registration Dossier
Registration Dossier
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EC number: 284-362-7 | CAS number: 84852-49-3
Biodegradation in water: screening tests
Administrative data
Link to relevant study record(s)
Description of key information
No test of ready biodegradability is available for the DTPMP potassium salt. The result is read across from the parent acid. The substance is not readily biodegradable, based on an SCAS test indicating 3.5 % degradation in a 24h cycle.
Key value for chemical safety assessment
Additional information
This substance is a member of a category of various ionised forms of the acid DTPMP (CAS 15827-60-8). The main assumption is that potassium is not significant in respect of all the properties under consideration (and would not affect biodegradability). In dilute aqueous conditions of defined pH a salt will behave no differently to the parent acid, at identical concentration of the particular speciated form present and will be fully dissociated. Hence some properties (measured or expressed in aqueous media, e.g. ecotoxicity) for a salt can be directly read across (with suitable mass correction) to the parent acid and vice versa, or in this case, from one salt to another.
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