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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Biodegradation in water: screening tests

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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.