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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: Essential information to cover endpoint supplied by study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1987
Report date:
1987

Materials and methods

Principles of method if other than guideline:
no guideline available
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
3-aminobenzenesulphonic acid
EC Number:
204-473-6
EC Name:
3-aminobenzenesulphonic acid
Cas Number:
121-47-1
Molecular formula:
C6H7NO3S
IUPAC Name:
3-aminobenzenesulfonic acid

Sampling and analysis

Analytical monitoring:
no

Test solutions

Vehicle:
not specified

Test organisms

Test organisms (species):
Desmodesmus subspicatus (previous name: Scenedesmus subspicatus)
Details on test organisms:
- Strain: SAG 86.91
- Culturing medium: OECD medium
- Culturing temperature: 20°C

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
96 h

Test conditions

Test temperature:
20°C
Nominal and measured concentrations:
- Concentrations tested (nominal): 1.953, 3.906, 7.813, 15.625, 31.25, 62.5, 125 and 250 mg/L
Details on test conditions:
TEST SYSTEM
- Test vessel: Erlenmeyer vessels (250 ml)
- Test volume: 100 ml
- Initial cell volume: 10000 cells/ml

Results and discussion

Effect concentrationsopen allclose all
Duration:
72 h
Dose descriptor:
EC20
Effect conc.:
77.8 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
108.6 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Duration:
72 h
Dose descriptor:
EC90
Effect conc.:
242.3 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.

Applicant's summary and conclusion