Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

Currently viewing:

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2002
Report date:
2002

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
3-(2-ethylhexyloxy)propylamine
EC Number:
226-420-6
EC Name:
3-(2-ethylhexyloxy)propylamine
Cas Number:
5397-31-9
Molecular formula:
C11H25NO
IUPAC Name:
3-[(2-ethylhexyl)oxy]propan-1-amine
Details on test material:
- Batch no.: 52-4155
- Physical state: liquid
- Water solubility: >100 < 10000 mg/L
- Colour: slightly yellowish, clear

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, non-adapted
Details on inoculum:
- Inoculum: effluent of the laboratory waste water plant fed with municipal sewage
- Preparation of inoculum: inoculum was pre-aerated for about 24 hours
- Adaptation of inoculum: no
Duration of test (contact time):
28 d
Initial test substance concentration
Initial conc.:
ca. 2 mg/L
Based on:
test mat.
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption
Details on study design:
- Temperature: 20.1 - 21.7 °C
- No pretreatment of test substance; 0.59 mg of test substance were directly added to each test flask
- The test solutions were filled in hermetically sealed bottles with a volume of about 300 ml
Reference substance
Reference substance:
other: sodium benzoate

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
20 - 30
Sampling time:
28 d
Details on results:
- Duration of adaptation phase: 21 d
- Duration of degradation phase: 7 d
- Degradation degree in the inhibition control after 14 d (% BOD/ThOD): 30-40
- Kinetic of test substance (in %):
< 0 after 7 day(s)
ca. 7 after 14 day(s)
ca. 8 after 21 day(s)
ca. 30 after 28 day(s)

BOD5 / COD results

Results with reference substance:
- Degradation degree of the reference substance after 14 days (% BOD/ThOD): 70-80

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
other: moderately/partly biodegradable