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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
toxicity to microorganisms
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
publication
Title:
Effects of selected chemicals to photo-luminescent bacteria and their correlation with acute and sublethal effects on other organisms
Author:
Ribo, J.M. et al
Year:
1983
Bibliographic source:
Chemosphere 12(11-12); 1421-1442; 1983

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: Microtox R System Operating Manual 1982 (Beckman Instruments)
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
2,5-dichlorophenol
EC Number:
209-520-4
EC Name:
2,5-dichlorophenol
Cas Number:
583-78-8
Molecular formula:
C6H4Cl2O
IUPAC Name:
2,5-dichlorophenol
Constituent 2
Reference substance name:
2,-dichlorophenol
IUPAC Name:
2,-dichlorophenol
Test material form:
not specified

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
not specified

Test organisms

Test organisms (species):
Photobacterium phosphoreum

Study design

Test type:
not specified
Water media type:
saltwater
Limit test:
no
Total exposure duration:
30 min

Results and discussion

Effect concentrations
Duration:
30 min
Dose descriptor:
EC50
Effect conc.:
9.4 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
other: bioluminiscence

Applicant's summary and conclusion

Conclusions:
The EC50 for Photobacterium phosphoreum was given with 9,4 mg/L (Time 30 min.)