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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
biodegradation in water: inherent biodegradability
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1988
Report date:
1994

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 302 B (Inherent biodegradability: Zahn-Wellens/EMPA Test)
Deviations:
yes
Principles of method if other than guideline:
Ratio DOC / activated sludge dry weight at about 1 / 5.
20% difference in the amount of inoculum.
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Octylamine
EC Number:
203-916-0
EC Name:
Octylamine
Cas Number:
111-86-4
Molecular formula:
C8H19N
IUPAC Name:
octan-1-amine

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, non-adapted
Details on inoculum:
origin: mixed inoculum of sewage treatment plants and Hoechst and Kelsterbach, 1: 2
Type of inoculum: Centrifuged sediment from activated sludge was washed, centrifuged again, and resuspended.
Use centrifuged wet sludge: 12 g/l
accordingly: 1000 mg / l dry weight
pretreatment: none
Duration of test (contact time):
31 d
Initial test substance concentration
Initial conc.:
200 mg/L
Based on:
DOC
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
DOC removal
Reference substance
Reference substance:
diethylene glycol
Remarks:
DOC=200mg/l; Biodegradation (14d)>70%

Results and discussion

% Degradationopen allclose all
Parameter:
% degradation (DOC removal)
Value:
14.7
Sampling time:
22 d
Parameter:
% degradation (DOC removal)
Value:
65.7
Sampling time:
26 d
Parameter:
% degradation (DOC removal)
Value:
81.7
Sampling time:
31 d
Details on results:
adaption phase: 21d
<10% biodegradation within 20d
>80% biodegradation within 28d

Adsorption: 7.5% all biodegradation values are corrected.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Interpretation of results:
inherently biodegradable
Conclusions:
Octylamine was found to be inherently biodegradable in a OECD302B test.
Executive summary:

Octylamine was found to be inherently biodegradable in a OECD302B test.