Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 619-057-3 | CAS number: 94667-33-1
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:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2008-11-14 til 2009-04-08
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 314 B (Simulation Tests to Assess the Biodegradability of Chemicals in Wastewater. B: Biodegradation in Activated Sludge)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Radiolabelling:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on source and properties of surface water:
- - Details on collection (e.g. location, sampling depth, contamination history, procedure):
Collection 1 d prior test
sieced 2 mm screen
aerated unbtil use. - Details on source and properties of sediment:
- - Details on collection (e.g. location, sampling depth, contamination history, procedure):
- Storage conditions:
- Storage length:
- Textural classification (i.e. %sand/silt/clay):
- pH at time of collection:
- Organic carbon (%):
- Redox potential (mv) initial/final:
- CEC (meq/100 g):
- Bulk density (g/cm³):
- Biomass (e.g. in mg microbial C/100 mg, CFU or other):
- Sediment samples sieved: yes/no - Details on inoculum:
- - Temperature (°C) at time of collection:
- pH at time of collection:
- Oxygen concentration (mg/l) initial/final:
- Dissolved organic carbon (%):
- Source of activated sludge (e.g. location, contamination history):
- Laboratory culture:
- Method of cultivation:
- Storage conditions:
- Storage length:
- Preparation for exposure:
- Pretreatment:
- Biomass concentration (mg/L) used in test: - Duration of test (contact time):
- 28 d
- Initial conc.:
- 50 µg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- CO2 evolution
- radiochem. meas.
- Compartment:
- abiotic control measured at end of test
- Sampling date:
- 2009
- % Total extractable:
- 102.17
- % Non extractable:
- 3.01
- % CO2:
- 0
- % Other volatiles:
- 0
- % Recovery:
- 105.18
- Compartment:
- biologically active treatment at end of test
- Sampling date:
- 2009
- % Total extractable:
- 9.16
- % Non extractable:
- 5.79
- % CO2:
- 85.98
- % Other volatiles:
- 0
- % Recovery:
- 100.94
- Parent/product:
- parent
- Compartment:
- total system
- Key result
- % Degr.:
- 100
- Parameter:
- radiochem. meas.
- Sampling date:
- 2009
- Sampling time:
- 28 d
- Key result
- Compartment:
- natural water / sediment: freshwater
- DT50:
- 4.7 h
- Type:
- (pseudo-)first order (= half-life)
- Temp.:
- 21.4 °C
- Other kinetic parameters:
- first order rate constant
- Transformation products:
- yes
- No.:
- #1
- Evaporation of parent compound:
- not specified
- Volatile metabolites:
- not specified
- Residues:
- not specified
- Results with reference substance:
- Not conducted
- Validity criteria:
- Recovery, distribution and abiotic control behaviour
- Observed value:
- Rad-TLC + LSC, parent substance analytics, CO2 evolution
- Validity criteria fulfilled:
- yes
- Executive summary:
An activated sludge dieaway experiment on [14C] Bardap 26 has been conducted to evaluate the rate and extent of primary biodegradation and mineralization of the test substance in activated sludge.
The test apparatus consisted of two 1-gallon amber glass jugs (test vessels) containing biologically active (biotic) or abiotic activated sludge. The abiotic control was identical to the biologically active treatment with the exception that it was amended at a nominal concentration of 1 g/L with mercuric chloride and autoclaved prior to test initiation. The test substance was dosed to both 2L biotic and 1L abiotic test vessels at a nominal concentration of 50 mg/L.
Samples were removed from the test vessels over a 28 day period. The conversion of radiolabeled test substance to 14CO2 (carbon dioxide) was measured by trapping 14CO2 in base traps and quantifying dissolved 14CO2. Disappearance of parent test substance and the formation of metabolites were determined by radiochromatography. In addition, the sludge solids were combusted to determine the
Rad-TLC analyisis of the methanol+1%formic acid extracts from the abiotic treatment revealed one distinct region. The region associated with the parent test material (Rf 0.59 to 0.71) was consistent throughout the study and was present at 94.90% of initial activity at the 1-minute sampling interval and was detected at 98.34% of initial activity at the termination of the test on day 28.
Rad-TLC analysis of the methanol+1% formic acid extracts from the biotic treatment revealed two distinct regions. The region associated with the parent test material (Rf 0.53 to 0.72) was present at 94.31% of initial activity at the 1-minute sampling interval, declined to 1.43% of initial activity by day 7 and was not detected on or after day 14. A distinct polar region relative to the parent test material (Rf -0.06 to 0.10) formed early in the study and was present at 0.00% of initial activity at the 1-minute sampling interval, was detected at 43.69% of initial activity at the 8 hour interval and was detected at 6.34% of initial activity at the termination of the test on day 28.
14CO2 production was substantial, with the biotic treatment reaching 85.98% at the termination of the study on day 28. For the biotic treatment, the level of activity associated with the solids was present at 2.29 % at the 1-minute sampling interval, increased to 9.67% at the 48 hour interval and declined to 5.79% of initial activity at the termination of the test on day 28. For the abiotic treatment, the level of activity associated with the solids was present at 2.82% at the 1-minute sampling interval and increased to 5.19% on day 28.
Kinetic analyses were performed for loss of parent and CO2 production. The loss of parent DT50 value was approximately 4.7 hours. Fifty percent CO2 production occurred at approximately 62 hours. amount of radioactivity remaining with the solids.
- Endpoint:
- biodegradation in water: simulation testing on ultimate degradation in surface water
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2016-09-07 til 2019-07-11
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 308 (Aerobic and Anaerobic Transformation in Aquatic Sediment Systems)
- Deviations:
- no
- GLP compliance:
- yes
- Radiolabelling:
- yes
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- natural water / sediment: freshwater
- Details on source and properties of surface water:
- - Details on collection (e.g. location, sampling depth, contamination history, procedure):
WS1: natural aerobic pond source in Rhineland-Palatinate (Pfalz, Hanhofen, Germany, 49.312358, 8.318905)
WS2: natural aerobic creek source in Baden-Württemberg (Weißach, Knittlingen, Germany, 49.028612, 8.775502)
- Storage conditions: poly ethylene container
- Storage length:
WS 1: 2016-09-21 until 2016-09-21
WS 2: 2016-09-27 until 2016-10-05
- Temperature (°C) at time of collection: 18 °C and 22 °
- pH at time of collection:
WS 1: 6.08
WS 2: 8.19
- Electrical conductivity:
WS 1:
WS 2:
- Redox potential (mv) initial/final:
WS 1: 150
WS 2: 85
- Oxygen concentration (mg/l) initial/final:
- Hardness (CaCO3):
- Dissolved organic carbon (%):
WS 1: TOC 104 mG/L
WS 2: TOC 104 mG/L
- Biomass (e.g. in mg microbial C/100 mg, CFU or other):
WS 1: 10.4 µg C/ g dry weight
WS 2: 20.3 µg C/ g dry weight
- Water filtered: yes/no
- Type and size of filter used, if any: - Details on source and properties of sediment:
- - Details on collection (e.g. location, sampling depth, contamination history, procedure):
WS1: natural aerobic pond source in Rhineland-Palatinate (Pfalz, Hanhofen, Germany, 49.312358, 8.318905)
WS2: natural aerobic creek source in Baden-Württemberg (Weißach, Knittlingen, Germany, 49.028612, 8.775502)
- Storage conditions: poly ethylene container
- Storage length:
WS 1: 2016-09-21 until 2016-09-21
WS 2: 2016-09-27 until 2016-10-05
- Temperature (°C) at time of collection:
WS 1: 16.0° C
WS 2: 17.1° C
- Textural classification (i.e. %sand/silt/clay):
WS 1: sand
WS 2: silt/loam
- pH at time of collection:
WS 1: 6.89
WS 2: 7.33
- Organic carbon (%):
WS 1: TOC 0,39%
WS 2: TOC 1.1%
- Redox potential (mv) initial/final:
WS 1: -84
WS 2: -145
- CEC (meq/100 g):
- Bulk density (g/cm³):
- Biomass (e.g. in mg microbial C/100 mg, CFU or other):
WS 1: 10.4 µg C/ g dry weight
WS 2: 20.3 µg C/ g dry weight
- Sediment samples sieved: yes/no - Details on inoculum:
- - Temperature (°C) at time of collection:
- pH at time of collection:
- Oxygen concentration (mg/l) initial/final:
- Dissolved organic carbon (%):
- Source of activated sludge (e.g. location, contamination history):
- Laboratory culture:
- Method of cultivation:
- Storage conditions:
- Storage length:
- Preparation for exposure:
- Pretreatment:
- Biomass concentration (mg/L) used in test: - Duration of test (contact time):
- 100 d
- Initial conc.:
- 2 other: mg/kG
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- CO2 evolution
- radiochem. meas.
- test mat. analysis
- Compartment:
- natural water / sediment: freshwater
- Sampling date:
- 2016
- % Total extractable:
- 96.7
- % Non extractable:
- 0
- % CO2:
- 0
- % Other volatiles:
- 0
- % Recovery:
- 96.8
- Remarks on result:
- other: Test system: WS1
- Compartment:
- natural water / sediment: freshwater
- Sampling date:
- 2016
- % Total extractable:
- 91.1
- % Non extractable:
- 0.1
- % CO2:
- 0
- % Other volatiles:
- 0
- % Recovery:
- 91.2
- Remarks on result:
- other: Test system: WS 1
- Compartment:
- natural water / sediment: freshwater
- Sampling date:
- 2016
- % Total extractable:
- 90.6
- % Non extractable:
- 0.4
- % CO2:
- 0
- % Other volatiles:
- 0
- % Recovery:
- 91
- Remarks on result:
- other: Test system: WS1
- Compartment:
- natural water / sediment: freshwater
- Sampling date:
- 2016
- % Total extractable:
- 91.2
- % Non extractable:
- 0.7
- % CO2:
- 4.7
- % Other volatiles:
- 0
- % Recovery:
- 96.6
- Remarks on result:
- other: Test system: WS1
- Compartment:
- natural water / sediment: freshwater
- Sampling date:
- 2016
- % Total extractable:
- 94.7
- % Non extractable:
- 0.9
- % CO2:
- 2.9
- % Other volatiles:
- 0
- % Recovery:
- 98.5
- Remarks on result:
- other: Test system : WS1
- Compartment:
- natural water / sediment: freshwater
- Sampling date:
- 2017
- % Total extractable:
- 87.4
- % Non extractable:
- 3.7
- % CO2:
- 2.4
- % Recovery:
- 93.4
- Remarks on result:
- other: Test system: WS1
- Compartment:
- natural water / sediment: freshwater
- Sampling date:
- 2017
- % Total extractable:
- 70.8
- % Non extractable:
- 9.6
- % CO2:
- 9.2
- % Other volatiles:
- 0
- % Recovery:
- 89.7
- Remarks on result:
- other: Test system: WS1
- Compartment:
- natural water / sediment: freshwater
- Sampling date:
- 2017
- % Total extractable:
- 50.3
- % Non extractable:
- 20.3
- % Other volatiles:
- 0
- % Recovery:
- 89.6
- Remarks on result:
- other: Test system: WS1
- Parent/product:
- parent
- Compartment:
- sediment
- Key result
- % Degr.:
- 0
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- sediment
- Key result
- % Degr.:
- 83.9
- Parameter:
- radiochem. meas.
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- sediment
- Key result
- % Degr.:
- 43.2
- Parameter:
- radiochem. meas.
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Key result
- % Degr.:
- 16
- Parameter:
- radiochem. meas.
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- sediment
- Key result
- % Degr.:
- 11.4
- Parameter:
- radiochem. meas.
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- sediment
- Key result
- % Degr.:
- 29.6
- Parameter:
- radiochem. meas.
- Sampling date:
- 2017
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- sediment
- Key result
- % Degr.:
- 72.6
- Sampling date:
- 2017
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- sediment
- Key result
- % Degr.:
- 92.7
- Parameter:
- radiochem. meas.
- Sampling date:
- 2017
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- water
- Key result
- % Degr.:
- 3.3
- Parameter:
- radiochem. meas.
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- water
- Key result
- % Degr.:
- 25
- Parameter:
- radiochem. meas.
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- water
- Key result
- % Degr.:
- 65.2
- Parameter:
- radiochem. meas.
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- water
- Key result
- % Degr.:
- 92.8
- Parameter:
- radiochem. meas.
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- water
- Key result
- % Degr.:
- 92
- Parameter:
- radiochem. meas.
- Sampling date:
- 2016
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- water
- Key result
- % Degr.:
- 99.9
- Parameter:
- radiochem. meas.
- Sampling date:
- 2017
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- water
- Key result
- % Degr.:
- 95
- Parameter:
- radiochem. meas.
- Sampling date:
- 2017
- Remarks on result:
- other: Test system: WS 1
- Parent/product:
- parent
- Compartment:
- water
- Key result
- % Degr.:
- 100
- Parameter:
- radiochem. meas.
- Sampling date:
- 2017
- Remarks on result:
- other: Test system: WS 1
- Key result
- Compartment:
- natural water / sediment: freshwater
- DT50:
- 4.43 d
- Type:
- (pseudo-)first order (= half-life)
- Remarks on result:
- other: Test system WS 1
- Key result
- Compartment:
- natural water / sediment
- DT50:
- 25.9 d
- Type:
- (pseudo-)first order (= half-life)
- Remarks on result:
- other: Test system WS 1
- Key result
- Compartment:
- natural water / sediment: freshwater
- DT50:
- 1.17 d
- Type:
- (pseudo-)first order (= half-life)
- Remarks on result:
- other: Test system: WS 2
- Key result
- Compartment:
- natural water / sediment
- DT50:
- 25.3 d
- Type:
- (pseudo-)first order (= half-life)
- Remarks on result:
- other: Test system: WS 2
- Other kinetic parameters:
- pseudo-first order rate constant
- Transformation products:
- yes
- No.:
- #1
- No.:
- #2
- No.:
- #3
- Evaporation of parent compound:
- no
- Volatile metabolites:
- yes
- Remarks:
- CO2
- Residues:
- no
- Validity criteria:
- Recovery and degradation fit
- Observed value:
- CO2 evolution, decline/ increase of [parent substance, [Metabolites]
- Validity criteria fulfilled:
- yes
- Conclusions:
- Bardap 26 was degraded in both systems 1WS and 2WS under aerobic laboratory conditions, with typical half-lives of 4.4 (1WS Pfalz) and 1.2 days (2 WS Weißach) in the water phase, 25.9 (1WS Pfalz) and 25.3 days (2WS Weißach) in the sediment extract and 50.6 (1WS Pfalz) and 24.6 days (2WS Weißach) in the total system.
The mean recoveries for the higher sampling times (from 61 days on) were sometimes below 90 % of the applied radioactivity. The low recoveries result out of a CO2 lost in the samples and has no effect on the outcome of this study.
From both test systems, WS 1 and WS 2 the lower metabotlisation rate have been chosen as worst case scenario.
In both systems one major transformation product evolved during the study. M1 reached maximum values of 43 % AR (1WS water phase), 0.4 % AR (1WS sediment extract), 46.7 % AR (2WS water phase) and 2.2 % AR (2WS sediment extract). The identification of M1 via mass spectrometry revealed four major metabolites within the M1 signal. Three could be identified as M1a, M1b and M1c. One unknown could not be identified but can be characterized as more polar than M1a, M1b, and M1c. It is proposed that M1d is a structure with shorter C-chains, an oxidation product of the N-oxyethyl moiety, or both.
Referenceopen allclose all
Summary of Test Results:
| biotic | biotic | biotic | biotic | abiotic | |
| 14C Bardap 26 | 1 min | 3 hrs | 72 hrs | Day 28 | Mean |
| % Evolved as14CO2 | NA | 4,01 | 53,42 | 85,98 | NA |
| % Recovered in Extracts: | |||||
| MeOH+Acid: as Parent | 94,31 | 52,85 | 2,79 | 0,00 | 101,88 |
| MeOH+Acid: as Metabolite | 0,00 | 31,09 | 9,18 | 6,34 | 0,00 |
| Water: | 0,64 | 10,90 | 6,37 | 2,82 | 0,29 |
| % Remaining with the Solids | 2,29 | 2,72 | 9,08 | 5,79 | 3,01 |
| Total % Recovered | 97,24 | 101,57 | 80,83 | 100,94 | 105,18 |
NA = Not Analyzed
Summary of the Distribution of 14C-Activity: Biotic Treatment
| Time | Parent | CO2 | Metabolites | Remaining with the Solids | Total Biodegradation* |
| (hr) | % | % | % | % | % |
| 0.017 | 94,31 | NA | 0,00 | 2,29 | 2,29 |
| 0,25 | 88,09 | 0,30 | 8,04 | 2,33 | 2,63 |
| 0,50 | 83,35 | 0,47 | 11,97 | 2,36 | 2,83 |
| 0,75 | 80,40 | 0,75 | 14,69 | 2,40 | 3,15 |
| 1,00 | 80,03 | 1,02 | 14,59 | 2,57 | 3,59 |
| 1,50 | 68,74 | 1,79 | 24,33 | 2,46 | 4,25 |
| 2,00 | 64,46 | 2,42 | 27,86 | 2,42 | 4,85 |
| 3,00 | 52,85 | 4,01 | 31,09 | 2,72 | 6,72 |
| 5,00 | 39,50 | 6,77 | 37,04 | 3,67 | 10,45 |
| 8,00 | 29,33 | 10,44 | 43,69 | 4,23 | 14,67 |
| 12,00 | 22,09 | 18,05 | 27,36 | 5,29 | 23,33 |
| 24,00 | 9,54 | 29,07 | 19,42 | 7,71 | 36,78 |
| 48,00 | 5,00 | 45,46 | 9,09 | 9,67 | 55,13 |
| 72,00 | 2,79 | 53,42 | 9,18 | 9,08 | 62,50 |
| 96,00 | 1,88 | 61,46 | 8,27 | 8,54 | 70,00 |
| 120,00 | 1,29 | 67,16 | 6,83 | 8,08 | 75,24 |
| 144,00 | 1,57 | 70,57 | 5,70 | 7,84 | 78,41 |
| 168,00 | 1,43 | 73,34 | 6,05 | 7,76 | 81,10 |
| 336,00 | 0,00 | 82,09 | 6,91 | 7,17 | 89,26 |
| 504,00 | 0,00 | 84,66 | 6,24 | 5,66 | 90,32 |
| 672,00 | 0,00 | 85,98 | 6,34 | 5,79 | 91,78 |
* measureof14CO2 evolved+percentradioactivityremainingonsolids
Summary of the Distribution of 14C-Activity: Abiotic Treatment
| Average % of Initial Radioactivity Recovered | Average % in Methanol | Average % with Solids | |
| Extracts: | 105.18 ± 4.78 | 101.88 ± 4.83 | 3.01 ± 1.01 |
Description of key information
Key value for chemical safety assessment
- Half-life in freshwater:
- 4.43 d
- at the temperature of:
- 20.7 °C
- Half-life in freshwater sediment:
- 25.9 d
- at the temperature of:
- 20.7 °C
Whole System
- Half-life in whole system:
- 4.7 d
- at the temperature of:
- 21 °C
- Type of system:
- fresh water and sediment
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
