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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Endpoint:
activated sludge respiration inhibition testing
Type of information:
experimental study
Adequacy of study:
other information
Study period:
August 23-25, 1999
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP - Guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1999
Report date:
1999

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
3,4-dichlorobut-1-ene
EC Number:
212-079-0
EC Name:
3,4-dichlorobut-1-ene
Cas Number:
760-23-6
Molecular formula:
C4H6Cl2
IUPAC Name:
3,4-dichlorobut-1-ene
Details on test material:
- Name of test material (as cited in study report): 3,4-Dichlorbuten-1
- purity: > 99.8%

Sampling and analysis

Analytical monitoring:
no

Test organisms

Test organisms (species):
Pseudomonas putida

Study design

Water media type:
freshwater
Total exposure duration:
3 h

Test conditions

Details on test conditions:
Type: aquatic

Results and discussion

Effect concentrations
Duration:
3 h
Dose descriptor:
EC50
Effect conc.:
2 950 mg/L
Nominal / measured:
not specified
Conc. based on:
test mat.
Basis for effect:
inhibition of total respiration
Remarks:
respiration rate

Applicant's summary and conclusion