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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
toxicity to aquatic plants other than algae
Type of information:
experimental study
Adequacy of study:
key study
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
Guideline:
OECD Guideline 221 (Lemna sp. Growth Inhibition Test)
Version / remarks:
C.26.
Deviations:
no
GLP compliance:
yes

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Remarks:
migrated information: powder
Details on test material:
orange powder

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
yes

Test organisms

Test organisms (species):
Lemna minor

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
7 d

Test conditions

Reference substance (positive control):
yes

Results and discussion

Effect concentrations
Duration:
7 d
Dose descriptor:
EC50
Effect conc.:
> 100 mg/L
Nominal / measured:
nominal
Basis for effect:
growth rate

Any other information on results incl. tables

With the five concentrations tested between 100 mg/L and 9.5 mg/L only a minor effect on the growth of Lemma plants was observed. With the highest concentration of 100 mg/L for the frond area a significant inhibition of the groth rate of 4.7 % occured.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Conclusions:
With 100 mg/L the growth rate of frond area was significantly inhibited by 4.7 %.
Therefore the NOEC for the frond area was determined with 55.6 mg/L and LOEC was 100 mg/L.
For the growth rate of frond number NOEC is >= 100 mg/L and LOEC is > 100 mg/L.