Registration Dossier
Registration Dossier
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EC number: 217-775-8 | CAS number: 1951-97-9
Endpoint summary
Administrative data
Description of key information
Additional information
Bio-degradation in water: screening tests
The substance piperazine compound with phosphoric acid is estimated to exhibit 50% biodegradation within 15 days. This value suggests that piperazine compound with phosphoric acid is likely to be readily biodegradable in water since the half life is less than the threshold of 60 days (to qualify the chemical as persistent).
Bio-degradation in water and sediment: simulation tests
Based on the Level III Fugacity Model, the half life period of piperazine compound with phosphoric acid was estimated. The half life period of piperazine compound with phosphoric acid in water is 360 hrs (15 days) therfore it is considered that the substance will qualify as not persistent as the half life does not exceed the threshold of 60 days. So, it can be confirmed that the substance is readily biodegradable in water medium where as in sediment the half life of piperazine compound with phosphoric acid is 3360 hrs (140 days). Based on this value, it can be inferred that the substance is persistent in sediment medium and is not readily biodegradable probably due to the anaerobic conditions existing in most sediments. However, it can be observed that piperazine compound with phosphoric acid does not diffuse in the sediment medium since it's percentage in the sediment medium is reported to be 0% and hence persistence in the sediment compartment is not likely to be critical.
Bio-degradation in soil
Half-life of piperazine compound with phosphoric acidin soil was estimated to be 30 days (720 hrs). This does not exceed the threshold of >= 2 months (and <= 6 months). Therefore, piperazine compound with phosphoric acid is estimated to be non persistent in the soil environment.
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