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Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

Abiotic degradation:

Hydrolysis: the substance is hydrolytically stable at pH 4,7 and 9 as shown from a OECDTG111 guideline study (2018).

Biotic degradation:

The substance is not ready biodegradable.

In an ultimate biodegradation screening study (ASTM E35.24, 1981) only slow biodegradation was observed (3% at 35 days).

In a valid SCAS test (1983), the substance showed:

- an insignificant effect on DOC removal at the end of the acclimation phase (at 50 ppm, 14d)

- no evidence of adverse effects upon microflora in sludge

- > 99% biodegradation at 21d of the biodegradation phase by HPLC analysis, showing (at least) rapid primary biodegradation

- Similar percentages of DOC removal as positive control during the biodegradation phase, indicating persistency is not anticipated

Distribution:

Based on a low Log Kow partition coefficient (1.8) and its water solubility, it is not expected the substance has a high adsorption potential and a study is therefore waived. However, an Episuite MCI Log Koc value of 2.26 can be predicted (Koc = 180.6).

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