Registration Dossier
Registration Dossier
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EC number: 810-688-1 | CAS number: 14034-59-4
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Guideline study in compliance with GLP-criteria. Limitations in reporting but considered adequate for assessment.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Ethylenediamine p-toluenesulphonate
- EC Number:
- 230-728-6
- EC Name:
- Ethylenediamine p-toluenesulphonate
- Cas Number:
- 7294-10-2
- IUPAC Name:
- ethane-1,2-diamine 4-methylbenzenesulfonate
- Details on test material:
- - Name of test substance: Ethylendiamin-Monotosylat
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge (adaptation not specified)
- Details on inoculum:
- Activated sludge from laboratory wastewater plants treating municipal sewage. Concentration of dry substance: 30 mg/L .
- Duration of test (contact time):
- 21 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 44 mg/L
- Based on:
- test mat.
- Initial conc.:
- 20 mg/L
- Based on:
- DOC
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
- Details on study design:
- Test temperature: 22 ± 2 °C
Reference substance
- Reference substance:
- other: a reference substance was used but not specified in the report
Results and discussion
% Degradation
- Value:
- 90 - 100
- Sampling time:
- 5 d
- Details on results:
- - Biodegradation degree of the reference substance after 14 days: 90-100% DOC
- Biodegradation degree in the inhibition control after 14 days: 90-100% DOC
- Elimination degree in the abiotic control after 28 days: <10 % DOC
- 10-day window criterion met: Yes
Any other information on results incl. tables
DOC decrease (%)
Day |
RS |
IH |
PC |
AC |
TS1 |
TS2 |
TSmean |
0 |
0 |
0 |
0 |
- |
0 |
0 |
0 |
1 |
-2 |
0 |
-2 |
1 |
-2 |
-1 |
|
3 |
95 |
48 |
-1 |
12 |
10 |
11 |
|
5 |
94 |
97 |
-2 |
94 |
103 |
99 |
|
7 |
96 |
95 |
1 |
92 |
98 |
95 |
|
10 |
93 |
93 |
-2 |
95 |
97 |
96 |
|
14 |
93 |
95 |
-6 |
95 |
98 |
97 |
|
17 |
95 |
97 |
-1 |
95 |
98 |
97 |
|
20 |
98 |
98 |
1 |
97 |
99 |
98 |
|
| 21 | 98 | 98 | 2 | 97 | 99 | 98 |
RS = Reference substance
IH = Inhibition control
PC = Abiotic control
AC = Adsoption control
TS = Test substance
Applicant's summary and conclusion
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.
