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Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
secondary source
Title:
BUA Stoffbericht Nr. 140 (2,4-Dichloroanilin....)
Author:
BUA
Year:
1994
Bibliographic source:
S. Hirzel wissenschaftliche Verlagsgesellschaft 1994 ISBN 3-7776-0618-9

Materials and methods

Test guidelineopen allclose all
Guideline:
OECD Guideline 301 C (Ready Biodegradability: Modified MITI Test (I))
Guideline:
OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
2,4-dichloroaniline
EC Number:
209-057-8
EC Name:
2,4-dichloroaniline
Cas Number:
554-00-7
Molecular formula:
C6H5Cl2N
IUPAC Name:
2,4-dichloroaniline
Constituent 2
Chemical structure
Reference substance name:
2,5-dichloroaniline
EC Number:
202-455-2
EC Name:
2,5-dichloroaniline
Cas Number:
95-82-9
Molecular formula:
C6H5Cl2N
IUPAC Name:
2,5-dichloroaniline
Constituent 3
Chemical structure
Reference substance name:
3,4-dichloroaniline
EC Number:
202-448-4
EC Name:
3,4-dichloroaniline
Cas Number:
95-76-1
Molecular formula:
C6H5Cl2N
IUPAC Name:
3,4-dichloroaniline

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
activated sludge, adapted

Results and discussion

% Degradation
Parameter:
% degradation (DOC removal)
Value:
< 8
Sampling time:
28 d

Any other information on results incl. tables

The three isomeric dichloroanilines where found to be not readily biodegradable under aerobic conditions.

Applicant's summary and conclusion

Interpretation of results:
other: not readily biodegrable