Registration Dossier

Administrative data

Endpoint:
toxicity to soil microorganisms
Type of information:
other: Migrated dataset
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Adopted according to OECD SIDS. The original source is not available and has not been reviewed.

Data source

Referenceopen allclose all

Reference Type:
secondary source
Title:
1,4-Dichlorobut-2-ene - CAS No: 764-41-0
Author:
OECD SIDS
Year:
2006
Bibliographic source:
SIDS Initial Assessment Report for 22th SIAM, UNEP Publications
Reference Type:
publication
Title:
Physicochemical properties as predictors of organic chemical effects on soil microbial respiration
Author:
Walton BT, Anderson TA, Hendricks MS, Talmage SS (as cited in OECD SIDS)
Year:
1989
Bibliographic source:
Environmental Toxicology and Chemistry 8, 53-63.
Reference Type:
study report
Title:
Unnamed
Year:
1989

Materials and methods

Principles of method if other than guideline:
other: microbial respiration test
GLP compliance:
not specified

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Migrated dataset; IUCLID4 Test substance: other TS: cis-1,4-Dichlorobut-2-ene, purity 95 %, trans-1,4-dichlorobut-2-ene, purity 85 %

Test organisms

Test organisms (inoculum):
other: other bacteria: soil microorganism

Study design

Total exposure duration:
6 d

Test conditions

Details on test conditions:
Type: soil

Results and discussion

Any other information on results incl. tables

Migrated dataset;

RS-Freetext:
Overall, there was a higher microbial respiration rate for soil with  higher organic carbon content. Control soils of both types showed a  gradual decline in CO2 efflux over the 7-d incubation period.
cis and trans 1,4-dichloro-2-butene depressed respiration at 1000 µg/g in  sandy loam and remained significantly depressed for all days and for day  6. Only the results for trans 1,4-dichloro-2-butene in the silt loam  indicate that a depression occurred during the experiment but disappeared  by the final day.
In further toxicity tests it was established that the isomers could be  added to the two soils at 500 µg/g without irreversibly suppressing  microbial respiration

Applicant's summary and conclusion