Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Endpoint:
short-term toxicity to aquatic invertebrates
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1996

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 202 (Daphnia sp. Acute Immobilisation Test)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Gestonorone
EC Number:
218-378-2
EC Name:
Gestonorone
Cas Number:
2137-18-0
Molecular formula:
C20H28O3
IUPAC Name:
17-acetyl-17-hydroxyestr-4-en-3-one

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Daphnia magna

Study design

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

Results and discussion

Any other information on results incl. tables

No adverse effects were observed.

Applicant's summary and conclusion

Conclusions:
No adverse effects were observed.
Executive summary:

The toxicity to aquatic invertebrates was studied in an acute immobilization test on Daphnia magna accroding to OECD 202. The daphnids were exposed to the test compound over a period of 48 hours in a limit test at the solubility limit (9.3 mg/L). No effects were observed in the test organisms. Thus, the EC50/48h in Daphnia magna is higher than a saturated solution of the test compound. The test was performed according to GLP (report X153, study TX96148).