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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Currently viewing:

Administrative data

Endpoint:
biodegradation in water and sediment: simulation tests
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)

Data source

Reference
Reference Type:
review article or handbook
Title:
Reaxys ID : 742030
Year:
2011
Bibliographic source:
Reaxys by Elsevier Properties SA;Susarla, Sridhar; Yonezawa, Yoshitaka; Masunaga, Shigeki; Water Research; vol. 32; nb. 3; (1998); p. 639 - 648

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other:
Principles of method if other than guideline:
Sulfate-reducing sediment samples were collected at the mouth of Tsurumi River, Japan, in 1992; in screw-top test-tubes;
GC/MS analysis was done for these samples
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
4-fluoroaniline
EC Number:
206-735-5
EC Name:
4-fluoroaniline
Cas Number:
371-40-4
Molecular formula:
C6H6FN
IUPAC Name:
4-fluoroaniline
Details on test material:
- Name of test material: 4-fluoroaniline
- Molecular formula: C6H6FN
- Molecular weight: 111.12
- Substance type: Organic
- Physical state: Liquid
Radiolabelling:
not specified

Study design

Oxygen conditions:
anaerobic
Inoculum or test system:
other: estuarine sediment slurry
Details on source and properties of sediment:
Sulfate-reducing sediment samples were collected at the mouth of Tsurumi River, Japan, in 1992; in screw-top test-tubes;
Duration of test (contact time):
211 d
Parameter followed for biodegradation estimation:
test mat. analysis
Reference substance
Reference substance:
not specified

Results and discussion

% Degradation
% Degr.:
50
Parameter:
test mat. analysis
Sampling time:
211 d
Remarks on result:
other: Other details not available
Half-life of parent compound / 50% disappearance time (DT50)
Compartment:
sediment
DT50:
211 d
Type:
other: First-order reaction
Remarks on result:
other: Other details not available
Other kinetic parameters:
first order rate constant
Transformation products:
not specified

Applicant's summary and conclusion

Conclusions:
The half-life of 4-fluoroaniline in an estuarine sediment slurry in anaerobic conditions is 211 days.
The first-order reaction rate constant is k=0.0033 day-1
Executive summary:

The half-life (50% degradation) of 4-fluoroaniline in an estuarine sediment slurry in anaerobic conditions is 211 days. The first-order reaction rate constant is k=0.0033 day-1. This indicates that this substance is slowly biodegradable in sediment.