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:
comparable to guideline study

Data source

Reference
Reference Type:
publication
Title:
Unnamed
Year:
1994

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
ISO 10253 (Water quality - Marine Algal Growth Inhibition Test with Skeletonema costatum and Phaeodactylum tricornutum)
Deviations:
not applicable
Principles of method if other than guideline:
see attached report
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
1-methylpyridinio-3-carboxylate
EC Number:
208-620-5
EC Name:
1-methylpyridinio-3-carboxylate
Cas Number:
535-83-1
Molecular formula:
C7H7NO2
IUPAC Name:
1-Methylpyridinio-3-carboxylate
Test material form:
not specified

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
not specified

Test organisms

Test organisms (species):
not specified

Study design

Test type:
static
Water media type:
saltwater
Limit test:
no
Total exposure duration:
24 h

Test conditions

Reference substance (positive control):
not required

Results and discussion

Effect concentrations
Key result
Duration:
24 h
Dose descriptor:
EC50
Effect conc.:
> 20 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
EC50 > 20 mg/L