Registration Dossier
Registration Dossier
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EC number: 230-939-3 | CAS number: 7378-99-6
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:
- May
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: According to OECD Guideline and non GLP
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 996
- Report date:
- 1996
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-E (Determination of the "Ready" Biodegradability - Closed Bottle Test)
- Deviations:
- no
- GLP compliance:
- no
Test material
- Reference substance name:
- Dimethyl(octyl)amine
- EC Number:
- 230-939-3
- EC Name:
- Dimethyl(octyl)amine
- Cas Number:
- 7378-99-6
- Molecular formula:
- C10H23N
- IUPAC Name:
- dimethyl(octyl)amine
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, industrial (adaptation not specified)
- Details on inoculum:
- The BOD of the substance was 1.42 gO2/g at the nominal 6 mg/L and 1.40 gO2/g at the nominal 3 mg/L; the mean BOD was 1.41 gO2/g
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 15.8 mg/L
- Based on:
- test mat.
Results and discussion
% Degradation
- Value:
- 83
- Sampling time:
- 28 d
- Remarks on result:
- other: COD
BOD5 / COD results
BOD5 / COD
- Value:
- 56 other: %
Any other information on results incl. tables
| Nominal test concentration (mg/L) | Mean oxygen consumption (mgO2/L) | Mean BOD (gO2/g) | BOD:COD ratio (%) |
| 6.0 | 8.5 | 1.42 | 56 |
| 3.0 | 4.2 | 1.40 | 55 |
| Parameter | Day 0 | |
| pH | 7.2 -7.4 | 6.7 -7.5 |
| Temperature ºC | 21.0 -21.1 | 20.5 -20.6 |
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The test material was degradated 83% and it is considered ready biodegradable.
- Executive summary:
The Biochemical Oxygen Demand (BOD) of the substance was assessed using methods based on OECD Guideline 301D and C.4 -E.
The BOD of the substance was 1.42gO2/g at the nominal 6mg/L and 1.40 gO2/g at the nominal 3mg/L; the mean BOD was 1.41gO2/g
The measured COD of the substcne was 83% of the ThOD (3.06gO2/g) claculated from its empirical formula and molecular weight which indicated that the material may not have been was completely oxidised under the conditions of the COD test.
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