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EC number: 225-918-0 | CAS number: 5146-66-7
Biodegradation in water and sediment: simulation tests
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in water and sediment: simulation tests
- Type of information:
- calculation (if not (Q)SAR)
- Remarks:
- Migrated phrase: estimated by calculation
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Data is from computational model developed by USEPA
- Qualifier:
- according to guideline
- Guideline:
- other: Modelling database
- Principles of method if other than guideline:
- Fugacity Model by EPI Suite estimation database
- GLP compliance:
- no
- Radiolabelling:
- not specified
- Oxygen conditions:
- other: estimation
- Inoculum or test system:
- not specified
- Parameter followed for biodegradation estimation:
- test mat. analysis
- Reference substance:
- not specified
- Compartment:
- other: water, material (mass) balance
- % Recovery:
- 20.7
- Compartment:
- other: sediment, material (mass) balance
- % Recovery:
- 0.354
- % Degr.:
- 50
- Parameter:
- other: Half life in water
- Sampling time:
- 15 d
- Remarks on result:
- other: 50% biodegradation in water ;15days = 360 hrs.
- % Degr.:
- 50
- Parameter:
- other: Half life in sediment
- Sampling time:
- 135 d
- Remarks on result:
- other: 50% biodegradation in sediment ; 135 days = 3240 hrs.
- Compartment:
- water
- DT50:
- 15 d
- Type:
- other: Estimation
- Temp.:
- 25 °C
- Remarks on result:
- other: Other details not available
- Compartment:
- sediment
- DT50:
- 135 d
- Type:
- other: Estimation
- Temp.:
- 25 °C
- Remarks on result:
- other: Other details not available
- Transformation products:
- not specified
- Evaporation of parent compound:
- not specified
- Volatile metabolites:
- not specified
- Residues:
- not specified
- Validity criteria fulfilled:
- not specified
- Conclusions:
- Estimated half life of Citralva in water was 15 days (360 h) and in sediment estimated to be 135 days (3240 h).
- Executive summary:
Estimation Programs Interface (EPI) Suite (2016) prediction model was run to predict the half-life in water and sediment for the test compound Citralva (CAS No. 5146 -66 -7). If released in to the environment, 20.7 % of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of Citralva in water is estimated to be 15 days (360 hrs). The half-life (15 days estimated by EPI suite) indicates that the exposure risk to aquatic animals is moderate to low whereas the half-life period of Citralva in sediment is estimated to be 135 days (3240 hrs). However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.354%), indicates that Citralva is not persistent in nature.
Reference
EPI SUITE:
|
Mass Amount (percent) |
Half-Life (hr) |
Emissions (kg/hr) |
Water |
20.7 |
360 |
1000 |
Sediment |
0.354 |
3.24e+003 |
0 |
|
Fugacity (atm) |
Reaction (kg/hr) |
Advection (kg/hr) |
Reaction (percent) |
Advection (percent) |
Water |
2.44e-009 |
455 |
236 |
15.2 |
7.88 |
Sediment |
1.88e-009 |
0.863 |
0.0807 |
0.0288 |
0.00269 |
Description of key information
Estimation Programs Interface (EPI) Suite (2016) prediction model was run to predict the half-life in water and sediment for the test compound Citralva (CAS No. 5146 -66 -7). If released in to the environment, 20.7 % of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of Citralva in water is estimated to be 15 days (360 hrs). The half-life (15 days estimated by EPI suite) indicates that the exposure risk to aquatic animals is moderate to low whereas the half-life period of Citralva in sediment is estimated to be 135 days (3240 hrs). However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.354%), indicates that Citralva is not persistent in nature.
Key value for chemical safety assessment
- Half-life in freshwater:
- 15 d
- at the temperature of:
- 25 °C
- Half-life in freshwater sediment:
- 135 d
- at the temperature of:
- 25 °C
Additional information
Estimation Programs Interface (EPI) Suite (2016) prediction model was run to predict the half-life in water and sediment for the test compound Citralva (CAS No. 5146 -66 -7). If released in to the environment, 20.7 % of the chemical will partition into water according to the Mackay fugacity model level III and the half-life period of Citralva in water is estimated to be 15 days (360 hrs). The half-life (15 days estimated by EPI suite) indicates that the exposure risk to aquatic animals is moderate to low whereas the half-life period of Citralva in sediment is estimated to be 135 days (3240 hrs). However, as the percentage release of test chemical into the sediment is less than 1% (i.e, reported as 0.354%), indicates that Citralva is not persistent in nature.
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