Octanoic acid, compound with octylamine (1:1)

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:

comparable to guideline study with acceptable restrictions

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1993

Materials and methods

Test guideline

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)

Deviations:

not specified

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

Octanoic acid, compound with octylamine (1:1)

EC Number:

241-477-7

EC Name:

Octanoic acid, compound with octylamine (1:1)

Cas Number:

17463-34-2

Molecular formula:

C8H19N.C8H16O2

IUPAC Name:

octan-1-amine; octanoic acid

Details on test material:

- Analytical purity: 100%
- CAS-No: 17463-34-2

Specific details on test material used for the study:

Carbon content calculated from sum formula: 703 mg/g
calculated COD: 2.69x10^3 mg/g (O2)

Study design

Oxygen conditions:

aerobic

Inoculum or test system:

activated sludge, non-adapted

Details on inoculum:

- Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): Municipal sewage treatment plant in Frankfurt-Sindlingen
- Pretreatment: stirred in mineral medium for 5 days
- Concentration of sludge: 22 mg/l dry weight

Duration of test (contact time):

14 d

Initial test substance concentration

Initial conc.:

131 mg/L

Based on:

test mat.

Parameter followed for biodegradation estimation

Parameter followed for biodegradation estimation:

O2 consumption

Details on study design:

The substance was weighted directly into the test vessel.

TEST CONDITIONS
- Composition of medium: according to guideline
- Test temperature: 20 ± 1 °C

TEST SYSTEM
- Culturing apparatus: BOD vessels

CONTROL AND BLANK SYSTEM
- Inoculum blank: yes
- Toxicity control: yes

Results and discussion

% Degradation

% Degradation 1

Parameter:

% degradation (O2 consumption)

Value:

62

Sampling time:

7 d

% Degradation 2

Parameter:

% degradation (O2 consumption)

Value:

68

Sampling time:

14 d

Details on results:

In a toxicity test no derogation of degradation occured at the test concentration.

Applicant's summary and conclusion

Interpretation of results:

readily biodegradable

Conclusions:

The test substance is readily biodegradable after 14 days.

Executive summary:

The ready biodegradability of the test item was tested in a Manometric Respirometry Test with nonadapted inoculum over a period of 14 days similar to OECD Guideline for Testing of Chemicals 301 F. The test item in the concentration of 131 mg/l reached a degree of degradation of 68% after 14 days, respectively. The test item must be regarded as readily biodegradable after 14 days.