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EC number: 500-315-8 | CAS number: 127087-87-0 1 - 2.5 moles ethoxylated
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: sediment simulation testing
- Type of information:
- calculation (if not (Q)SAR)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Justification for type of information:
- Data is from EPI Suite
- Qualifier:
- according to guideline
- Guideline:
- other: Modeling database
- Principles of method if other than guideline:
- Fugacity Model by EPI Suite estimation database
- GLP compliance:
- no
- Specific details on test material used for the study:
- - Name of test material (as cited in study report): Nonylphenol ethoxylates
- Molecular formula : C17H28O2
- Molecular weight : 264.409 g/mol
- Substance type:Organic
- Physical state: Liquid - Oxygen conditions:
- other: estimation
- Inoculum or test system:
- not specified
- Parameter followed for biodegradation estimation:
- test mat. analysis
- Compartment:
- water
- % Recovery:
- 9.39
- Remarks on result:
- other: Other details not known
- Compartment:
- sediment
- % Recovery:
- 0.631
- Remarks on result:
- other: Other details not known
- Key result
- % Degr.:
- 50
- Parameter:
- other: Half-life in water
- Sampling time:
- 60 d
- Remarks on result:
- other: Other details not known
- Key result
- % Degr.:
- 50
- Parameter:
- other: Half-life in sediment
- Sampling time:
- 541.66 d
- Remarks on result:
- other: Other details not known
- Key result
- Compartment:
- water
- DT50:
- 60 d
- Type:
- other: estimated data
- Temp.:
- 25 °C
- Remarks on result:
- other: Other details not known
- Key result
- Compartment:
- sediment
- DT50:
- 541.66 d
- Type:
- other: estimated data
- Temp.:
- 25 °C
- Remarks on result:
- other: Other details not known
- Transformation products:
- not specified
- Validity criteria fulfilled:
- not specified
- Conclusions:
- Estimated half life of 4-Nonylphenol, branched, ethoxylated in water was 60 days (1440 h) and in sediment estimated to be 541.66 days (13000 h).
- Executive summary:
Estimation Programs Interface (EPI) Suite (2017) prediction model was run to predict the half-life in water and sediment for the test compound 4-Nonylphenol, branched, ethoxylated (CAS No. 127087 -87 -0). If released in to the environment, 9.39% of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of 4-Nonylphenol, branched, ethoxylated in water is estimated to be 60 days (1440 hrs). The half-life (60 days) indicates that the chemical is persistent in water and the exposure risk to aquatic animals is moderate to high whereas the half-life period of 4-Nonylphenol, branched, ethoxylated in sediment is estimated to be 541.66 days (13000 hrs). However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.631%), it can be considered that 4-Nonylphenol, branched, ethoxylated is not persistent in sediment.
Reference
Mass Amount (percent) |
Half-Life (hr) |
Emissions (kg/hr) |
|
Water |
9.39 |
1.44e+003 |
1000 |
Sediment |
0.631 |
1.3e+004 |
0 |
Fugacity (atm) |
Reaction (kg/hr) |
Advection (kg/hr) |
Reaction (percent) |
Advection (percent) |
|
Water |
3.39e-022 |
381 |
791 |
12.7 |
26.4 |
Sediment |
4.42e-022 |
2.84 |
1.06 |
0.0948 |
0.0354 |
Description of key information
Estimation Programs Interface (EPI) Suite (2017) prediction model was run to predict the half-life in water and sediment for the test compound4-Nonylphenol, branched, ethoxylated(CAS No. 127087 -87 -0). If released in to the environment, 9.39% of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of4-Nonylphenol, branched, ethoxylatedin water is estimated to be 60 days (1440 hrs). The half-life (60 days) indicates that the chemical is persistent in water and the exposure risk to aquatic animals is moderate to high whereas the half-life period of4-Nonylphenol, branched, ethoxylatedin sediment is estimated to be 541.66 days (13000 hrs). However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.631%), it can be considered that4-Nonylphenol, branched, ethoxylatedis not persistent in sediment.
Key value for chemical safety assessment
- Half-life in freshwater:
- 60 d
- at the temperature of:
- 25 °C
- Half-life in freshwater sediment:
- 541.66 d
- at the temperature of:
- 25 °C
Additional information
Estimation Programs Interface (EPI) Suite (2017) prediction model was run to predict the half-life in water and sediment for the test compound4-Nonylphenol, branched, ethoxylated(CAS No. 127087 -87 -0). If released in to the environment, 9.39% of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of4-Nonylphenol, branched, ethoxylatedin water is estimated to be 60 days (1440 hrs). The half-life (60 days) indicates that the chemical is persistent in water and the exposure risk to aquatic animals is moderate to high whereas the half-life period of4-Nonylphenol, branched, ethoxylatedin sediment is estimated to be 541.66 days (13000 hrs). However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.631%), it can be considered that4-Nonylphenol, branched, ethoxylatedis not persistent in sediment.
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