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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
biodegradation in water: screening tests
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study based on scientific principles, sufficiently documented;

Data source

Reference
Reference Type:
publication
Title:
Degradation of eighteen 1-monohaloalkanes by Arthrobacter sp. strain HA1.
Author:
Scholz, R. et al.
Year:
1987
Bibliographic source:
J. Gen. Microbiol., 133, 267-274

Materials and methods

Principles of method if other than guideline:
Method: Microbiological study following enrichment culture
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
1-chlorohexane
EC Number:
208-859-5
EC Name:
1-chlorohexane
Cas Number:
544-10-5
Molecular formula:
C6H13Cl
IUPAC Name:
1-chlorohexane
Details on test material:
putity >= 99 %

Study design

Oxygen conditions:
aerobic
Inoculum or test system:
other: Arthrobacter sp.
Details on inoculum:
The strain was isolated from adapted bioactive sludge of an industrial wastewater treatment plant and could use the test item as sole carbon source by releasing hydrogen chloride and forming 1–hexanol as intermediate.
Duration of test (contact time):
40 h
Initial test substance concentrationopen allclose all
Initial conc.:
200 mg/L
Based on:
test mat.
Initial conc.:
1.7 mmol/L
Based on:
test mat.

Results and discussion

Details on results:
The strain was isolated from adapted bioactive sludge of an industrial wastewater treatment plant and could use the TS as sole carbon source by releasing hydrogen chloride and forming 1-hexanol as intermediate. The enzyme, halidohydrolase, is inducible. The concentration of inoculum was very low, less than 3 mg/l, expressed as protein content, at time 0.
Also a second strain, Ps. putida, was mentioned, having a similar degradation characteristic.

Any other information on results incl. tables

Can be biodegraded by adapted sewage treatment plant organisms.

Applicant's summary and conclusion

Interpretation of results:
other: biodegradable