Registration Dossier

Ecotoxicological information

Toxicity to aquatic plants other than algae

Administrative data

Endpoint:
toxicity to aquatic plants other than algae
Type of information:
migrated information: read-across based on grouping of substances (category approach)
Adequacy of study:
supporting study
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
other: No guideline followed, no analytical monitoring, non GLP,

Data source

Reference
Reference Type:
publication
Title:
Use of duckweed (Lemna minor L.) growth inhibition test to evaluate the toxicity of acrylonitrile, sulphocyanic sodium and acetonitrile in China
Author:
Tong, S. and Hongjun, J.
Year:
1997
Bibliographic source:
Environmental Pollution, 98:143-147

Materials and methods

Test guideline
Qualifier:
no guideline followed
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Details on test material:
Analytical grade, obtained from Shanghai Chemical Regent Trade Centre, Shanghai, China.

Sampling and analysis

Analytical monitoring:
no

Test organisms

Test organisms (species):
Lemna minor

Study design

Test type:
semi-static
Water media type:
freshwater
Total exposure duration:
96 h

Results and discussion

Effect concentrations
Duration:
96 h
Dose descriptor:
IC50
Effect conc.:
3 663 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
growth rate

Applicant's summary and conclusion

Validity criteria fulfilled:
not applicable
Conclusions:
the 96 hr IC50 of sodium thiocyanate to L. minor was 3663 mg/L
Executive summary:

This study was designed to evaluate the acute toxicity of sulphocyanic sodium to Lemna minor using the growth inhibition test. The experimental approach involved exposure of L. minor to sulphocyanic sodium under standard laboratory conditions. The results indicated that the 96 hr IC50 to L. minor using the relative growth rate was 3663 mg/L.