Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Administrative data

Endpoint:
toxicity to aquatic algae and cyanobacteria
Remarks:
The sample was sent to Ramachandra Innovis, Sri Ramachandra medical Centre, Chennai-600116, India
Type of information:
experimental study
Adequacy of study:
key study
Study period:
34 days
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2012
Report Date:
2012

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 201 (Freshwater Alga and Cyanobacteria, Growth Inhibition Test)
Version / remarks:
year 2006
Deviations:
no
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
liquid

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
yes

Test organisms

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

Study design

Test type:
static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
72 h

Test conditions

Test temperature:
21.2°C at 0hrs to 22.8°C at 72hrs
pH:
8.3 at 0hrs to 8.6 at 72hrs
Reference substance (positive control):
not specified

Results and discussion

Effect concentrations
Key result
Duration:
72 h
Dose descriptor:
EC50
Effect conc.:
>= 100 - <= 100 mg/L
Conc. based on:
test mat.
Basis for effect:
growth rate
Remarks on result:
other: No toxic effects observed at a concentration of 100mg per litre

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
2-(2,4-Dimethylcyclohex-3-ene-1-yl)-5-methyl-(1-methylpropyl)-1,3-dioxane did not cause any or significant growth Inhiition or toxic effects in any of the Daphnia groups during the test period.
The EC50 of 2-(2,4-Dimethylcyclohex-3-ene-1-yl)-5-methyl-(1-methylpropyl)-1,3-dioxane was found to be greater than 100mg per litre.
The complete study was performed in compliance with OECD guidelines number 201.