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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to aquatic invertebrates

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Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report date:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
Enoxolone
EC Number:
207-444-6
EC Name:
Enoxolone
Cas Number:
471-53-4
Molecular formula:
C30H46O4
IUPAC Name:
3-hydroxy-11-oxoolean-12-en-30-oic acid
Test material form:
solid: particulate/powder

Sampling and analysis

Analytical monitoring:
yes

Test organisms

Test organisms (species):
Daphnia magna

Study design

Test type:
static
Water media type:
saltwater
Total exposure duration:
48 h

Test conditions

Test temperature:
21℃±1℃
pH:
No correctiong of pH was necessary
Reference substance (positive control):
yes
Remarks:
K2Cr2O7

Results and discussion

Effect concentrations
Key result
Duration:
48 h
Dose descriptor:
EC50
Effect conc.:
3.492 mg/L
Conc. based on:
test mat.
Basis for effect:
mortality

Applicant's summary and conclusion

Conclusions:
According to OECD 202:2004, under the test conditions applied, the EC50 of the test substance is calculated as EC50:3.492 mg/L.