2-chlorobenzaldehyde

Biodegradation in water and sediment: simulation tests

Administrative data

Endpoint:

biodegradation in water and sediment: simulation tests

Type of information:

experimental study

Adequacy of study:

other information

Reliability:

3 (not reliable)

Rationale for reliability incl. deficiencies:

other: No guideline study, endpoint of low relevance.

Data source

Reference

Reference Type:

publication

Title:

Preliminary characterization of four 2-chlorobenzoate-degrading anaerobic bacterial consortia

Author:

Sharak Genthner, B.

Year:

1999

Bibliographic source:

Biodegradation 10: 27-33, 1999

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

Anaerobic transformation with 2-chlorobenzoate-degrading methanogenic consortia derived from freshwater sediment enrichments.

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

2-chlorobenzaldehyde

EC Number:

201-956-3

EC Name:

2-chlorobenzaldehyde

Cas Number:

89-98-5

Molecular formula:

C7H5ClO

IUPAC Name:

2-chlorobenzaldehyde

Study design

Inoculum or test system:

anaerobic bacteria

Duration of test (contact time):

<= 9 mo

Initial test substance concentration

Initial conc.:

100 µmol/L

Based on:

test mat.

Results and discussion

Transformation products:

yes

Identity of transformation products

No.:

#1

Reference

Reference substance name:

Unnamed

IUPAC name:

(2-chlorophenyl)methanol

Inventory number:

InventoryMultipleMappingImpl [inventoryEntryValue=EC 241-801-7]

CAS number:

17849-38-6

Any other information on results incl. tables

2-chlorobenzylalcohol was not observed to decline.

Applicant's summary and conclusion

Validity criteria

Validity criteria fulfilled:

not applicable

Conclusions:

Under anaerobic conditions with methanogenic bacterial consortia, reductive biotransformation of 2-chlorobenzaldehyde to 2-chlorobenzyl alcohol is observed.

Executive summary:

With the used methanogenic anaerobic bacterial consortia, only primary biodegradation of 2-chlorobenzaldehyde to 2-chlorobenzyl alcohol (reductive biotransformation) was observed. No degradation of 2-chlorobenzyl alcohol could be detected.