Registration Dossier
Registration Dossier
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EC number: 205-569-0 | CAS number: 142-88-1
Endpoint summary
Administrative data
Description of key information
Additional information
Biodegradation in water :
Biodegradation in water and sediment
Based on the Level III Fugacity Model, the half life period of thepiperazine adipatewas estimated. The half period ofpiperazine adipatein water is 360 hrs (15 days) therefore it is considered that the substance will qualify as not persistent as the half life does not exceed the EPA criteria of 60 days. So, it can be confirmed that the substance is readily biodegradable in water medium where as in sediment the half life is 3240 hrs (135 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 adipatedoes not diffuse in the sediment medium since it's percentage in the sediment medium is reported to be 0.0769 % and hence persistence in the sediment compartment is not likely to be critical.
|
Mass Amount (percent) |
Half-Life (hr) |
Emissions (kg/hr) |
Water |
23.8 |
360 |
1000 |
Sediment |
0.0769 |
3.24e+003 |
0 |
|
Fugacity (atm) |
Reaction (kg/hr) |
Advection (kg/hr) |
Reaction (percent) |
Advection (percent) |
Water |
4.09e-024 |
961 |
499 |
32 |
16.6 |
Sediment |
3.65e-024 |
0.345 |
0.0323 |
0.0115 |
0.00108 |
Biodegradation in soil
The EPI Suite has estimated thatpiperazine adipateis expected to be found predominantly in soil and its persistence estimate is based on its transformation in this medium. Its half-life in soil, 720 hrs (30 days). does not exceeds the EPA criteria of >= 2 months (and <= 6 months). Therefore,piperazine adipate is estimated not to be persistent in the soil environment.
|
Mass Amount (percent) |
Half-Life (hr) |
Emissions (kg/hr) |
Soil |
76.2 |
720 |
1000 |
|
Fugacity (atm) |
Reaction (kg/hr) |
Advection (kg/hr) |
Reaction (percent) |
Advection (percent) |
Soil |
1.31e-022 |
1.54e+003 |
0 |
51.3 |
0 |
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