Registration Dossier

Environmental fate & pathways

Additional information on environmental fate and behaviour

Administrative data

Endpoint:
additional information on environmental fate and behaviour
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: The quality of these references could not be assessed due to the limited information on the study performance

Data source

Referenceopen allclose all

Reference Type:
publication
Title:
Biological Reductive Dechlorination of Tetrachloroethylene and Trichloroethylene to Ethylene under Methanogenic Conditions
Author:
DL Freedman and J.M. Gossett
Year:
1989
Bibliographic source:
Appl. Envriron. Microbiol. 58, 2144
Reference Type:
publication
Title:
Reductive Dechlorination of High Concentrations of Tetrachloroethene to Ethene by an Anaerobic Enrichment Culture in the Absence of Methanogenesis
Author:
T.D. DiStefano, J.M. Gossett, S.H. Zinder
Year:
1991
Bibliographic source:
Appl. Environ. Microbiol. 57, 2287
Reference Type:
publication
Title:
Complete Biological Reductive Transformation of Tetrachloroethene to Ethane
Author:
W.P. de Bruin, M. J. J. Kotterman, M.A. Posthumus, G. Schraa, A.J.B. Zehnde
Year:
1992
Bibliographic source:
Appl. Environ. Microbiol. 58,
Reference Type:
publication
Title:
A Highly Purified Enrichment Culture Couples the Reductive Dechlorination of Tetrachloroethene to Growth
Author:
C. Holliger, G. Schraa, A.J.M. Stams, A.J.B. Zehnder
Year:
1993
Bibliographic source:
Appl. Environ. Microbiol. 58, 2991

Materials and methods

Test material

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Any other information on results incl. tables

Several studies suggest the following mechanism for the microbial degradation of VC:

VC ----(oxidation by methane-monooxygenase)---->
 
chloroethylene oxide -----(rearrangement)------>

chloroacetaldehyde ---------(oxidation)-------->

chloroacetate ---(hydrolytic dehalogenation)--->

glycolate (------> normal cellular metabolism)

Applicant's summary and conclusion