Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Peer reviewed data

Data source

Reference
Reference Type:
publication
Title:
Testing toxicity of volatile substances with algae.
Author:
BUA Report 54, VCH
Year:
1990
Bibliographic source:
Galassi, S., Vighi, M. (1981) Chemosphere 10, 1123-1126

Materials and methods

Test guideline
Qualifier:
no guideline available
Principles of method if other than guideline:
no guideline available
GLP compliance:
not specified

Test material

Constituent 1
Chemical structure
Reference substance name:
Chlorobenzene
EC Number:
203-628-5
EC Name:
Chlorobenzene
Cas Number:
108-90-7
Molecular formula:
C6H5Cl
IUPAC Name:
chlorobenzene
Details on test material:
- Name of test material (as cited in study report): Chlorobenzene

Sampling and analysis

Analytical monitoring:
not specified

Test organisms

Test organisms (species):
Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum)

Study design

Total exposure duration:
96 h

Test conditions

Test temperature:
25 °C
Details on test conditions:
TEST SYSTEM
- Type: closed system

Results and discussion

Effect concentrationsopen allclose all
Duration:
96 h
Dose descriptor:
EC50
Effect conc.:
12.5 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Duration:
96 h
Dose descriptor:
NOEC
Effect conc.:
< 6.8 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate
Duration:
96 h
Dose descriptor:
EC100
Effect conc.:
46 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate

Applicant's summary and conclusion