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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study according to EU/OECD guideline

Data source

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

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 201 (Alga, Growth Inhibition Test)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
1-methylcyclohexane-1-carboxylic acid
EC Number:
214-371-3
EC Name:
1-methylcyclohexane-1-carboxylic acid
Cas Number:
1123-25-7
Molecular formula:
C8H14O2
IUPAC Name:
1-methylcyclohexane-1-carboxylic acid

Sampling and analysis

Analytical monitoring:
yes

Test organisms

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

Study design

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

Results and discussion

Any other information on results incl. tables

Test conditions met all validity criteria, given by the mentioned guideline(s). The analytical finding of the test substance in the treatment level found on day 0 was 103 % of nominal. On day 3 analytical finding of 102 % of nominal was found. All results are based on nominal test concentrations of the metabolite. The static 72 hour algae growth inhibition test provided the following effects:

nominal concentration [mg p.m./L] / cell number after 72 h (means) per mL / (0-72h)-average specific growth rates [days-1]

control                                                        483 000                                              1.292                                                            

solvent control                                            479 000                                               1.289

pooled controls                                           481 000                                              1.291

10.0                                                            449 000                                              1.269

Conclusions: The (0 - 72h)-ErC50 for the test item is > 10.0 mg p.m./L

Applicant's summary and conclusion

Validity criteria fulfilled:
yes