Registration Dossier
Registration Dossier
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EC number: 434-230-1 | CAS number: 144413-22-9
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 07 July 1998 - 05 August 1998
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Standard Test method including GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 999
- Report date:
- 1999
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 B (Ready Biodegradability: CO2 Evolution Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Arakawa KE-604
- IUPAC Name:
- Arakawa KE-604
- Reference substance name:
- Hydrogenated reaction products of rosin with acrylic acid
- Cas Number:
- 144413-22-9
- IUPAC Name:
- Hydrogenated reaction products of rosin with acrylic acid
- Test material form:
- other: pale yellow blocks
Constituent 1
Constituent 2
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, non-adapted
- Duration of test (contact time):
- 28 d
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- CO2 evolution
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- % degradation (CO2 evolution)
- Value:
- 25
- Sampling time:
- 28 d
- Details on results:
- Day % Degradation Arakawa KE-604
0 0
1 1
2 0
3 1
6 5
8 11
10 15
14 16
16 20
20 21
22 24
24 25
27 25
28 25
BOD5 / COD results
- Results with reference substance:
- Day % Degradation sodium benzoate
0 0
1 4
2 21
3 29
6 50
8 61
10 66
14 70
16 70
20 70
22 75
24 76
27 74
28 76
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- The test material attaines 25% degradation after 28 days and therefore connot be considered to be readily biodegradable under the strict terms and conditions of OECD Guideline No 301B.
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