Registration Dossier

Environmental fate & pathways

Biodegradation in water: screening tests

Administrative data

Endpoint:
biodegradation in water: ready biodegradability
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline Study, basic data given.

Data source

Referenceopen allclose all

Reference Type:
study report
Title:
Unnamed
Year:
1989
Reference Type:
secondary source
Title:
2,3,4-TRICHLORO-1-BUTENE
Author:
ECB
Year:
2000
Bibliographic source:
ECB IUCLID dataset
Reference Type:
secondary source
Title:
2,3,4-TRICHLORO-1-BUTENE - CAS No: 2431-50-7
Author:
OECD
Year:
1993
Bibliographic source:
Screening Information Data Set (SIDS) of OECD High Production Volume Chemicals Programme, (1993)

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
other: EG Guideline 79/831 EWG, part 5
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
2,3,4-trichlorobut-1-ene
EC Number:
219-397-9
EC Name:
2,3,4-trichlorobut-1-ene
Cas Number:
2431-50-7
Molecular formula:
C4H5Cl3
IUPAC Name:
2,3,4-trichlorobut-1-ene
Details on test material:
- Name of test material (as cited in study report): 2,3,4-Trichlorbuten-1
- Analytical purity: not stated in original report (99% reported in SIDS report)

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
sewage, predominantly domestic (adaptation not specified)
Details on inoculum:
- Source of inoculum/activated sludge: laboratory treatment plant
- Laboratory culture: yes
Duration of test (contact time):
28 d
Parameter followed for biodegradation estimation
Parameter followed for biodegradation estimation:
O2 consumption
Reference substance
Reference substance:
aniline

Results and discussion

% Degradation
Parameter:
% degradation (O2 consumption)
Value:
0
Sampling time:
28 d

BOD5 / COD results

Results with reference substance:
100 % after 28 d

Any other information on results incl. tables

The substance is not readily biodegradable

Applicant's summary and conclusion

Interpretation of results:
under test conditions no biodegradation observed