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EC number: 257-269-4 | CAS number: 51548-48-2
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: Modeling database
- Principles of method if other than guideline:
- Fugacity Model by EPI Suite estimation database.
- GLP compliance:
- not specified
- Radiolabelling:
- not specified
- Oxygen conditions:
- other: estimation
- Inoculum or test system:
- not specified
- Parameter followed for biodegradation estimation:
- test mat. analysis
- Compartment:
- other: water, material (mass) balance
- % Recovery:
- 14.9
- Compartment:
- other: sediment, material (mass) balance
- % Recovery:
- 0.155
- % Degr.:
- 50
- Parameter:
- other: Half life in water
- Sampling time:
- 37.5 d
- Remarks on result:
- other: Other details not known.
- % Degr.:
- 50
- Parameter:
- other: Half-life in sediment
- Sampling time:
- 337.5 d
- Remarks on result:
- other: Other details not known.
- Compartment:
- water
- DT50:
- 37.5 d
- Type:
- other: estimation
- Temp.:
- 25 °C
- Remarks on result:
- other: Other details not known.
- Compartment:
- sediment
- DT50:
- 337.5 d
- Type:
- other: estimation
- Temp.:
- 25 °C
- Remarks on result:
- other: Other details not known.
- 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 (5Or8)-aminonaphthalene-2-sulphonic acid in water was 37.5 days (900 h) and in sediment estimated to be 337.5 days (8100 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 (5Or8)-aminonaphthalene-2-sulphonic acid (CAS No. 51548 -48 -2). Half-life of (5Or8)-aminonaphthalene-2-sulphonic acid in water is estimated to be 37.5 days (900 hrs) while in sediment it is 337.5 days (8100 hrs). Based on these half-life value of (5Or8)-aminonaphthalene-2-sulphonic acid, it is concluded that the chemical is not persistent in water while it is persistent in sediment.
Reference
|
Mass Amount (percent) |
Half-Life (hr) |
Emissions (kg/hr) |
Water |
14.9 |
900 |
1000 |
Sediment |
0.155 |
8.1e+003 |
0 |
|
Fugacity (atm) |
Reaction (kg/hr) |
Advection (kg/hr) |
Reaction (percent) |
Advection (percent) |
Water |
1.47e-018 |
583 |
757 |
19.4 |
25.2 |
Sediment |
1.48e-018 |
0.674 |
0.158 |
0.0225 |
0.00525 |
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 (5Or8)-aminonaphthalene-2-sulphonic acid (CAS No. 51548 -48 -2). Half-life of (5Or8)-aminonaphthalene-2-sulphonic acid in water is estimated to be 37.5 days (900 hrs) while in sediment it is 337.5 days (8100 hrs). Based on these half-life value of (5Or8)-aminonaphthalene-2-sulphonic acid, it is concluded that the chemical is not persistent in water while it is persistent in sediment.
Key value for chemical safety assessment
- Half-life in freshwater:
- 37.5 d
- at the temperature of:
- 25 °C
- Half-life in freshwater sediment:
- 337.5 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 (5Or8)-aminonaphthalene-2-sulphonic acid(CAS No. 51548 -48 -2). Half-life of (5Or8)-aminonaphthalene-2-sulphonic acidin water is estimated to be 37.5 days (900 hrs) while in sediment it is 337.5 days (8100 hrs). Based on these half-life value of (5Or8)-aminonaphthalene-2-sulphonic acid, it is concluded that the chemical is not persistent in water while it is persistent in sediment.
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