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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
toxicity to other aquatic vertebrates
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Well described study, acceptable for assessment.
Qualifier:
no guideline followed
GLP compliance:
no
Analytical monitoring:
not specified
Vehicle:
not specified
Test organisms (species):
other: Hydractinia echinata (Hydrozoa, Cnidaria)
Details on test organisms:
TEST ORGANISM
- Common name: saltwater polyp
- Age at study initiation (mean and range, SD):larvae
Test type:
static
Water media type:
saltwater
Limit test:
no
Total exposure duration:
3 h
Test temperature:
18°C
pH:
8.2
Salinity:
980 mosmol
Details on test conditions:
TEST SYSTEM
- Test vessel: dishes, 3 mL test substance solution
- No. of organisms per vessel: 30
- No. of vessels per concentration (replicates): 3
Duration:
3 h
Dose descriptor:
other: MRC50 (metamorphosis reducing concentration, comparable to EC50)
Effect conc.:
99 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Remarks:
reduction of metamorphosis from larvae to adult polyps
Basis for effect:
morphology

- 30 larvae per dish were exposed for 3 hours to a solution of the test substance. One day after exposure, the number of larvae which performed metamorphosis to polyps was counted.

Validity criteria fulfilled:
not specified

Description of key information

Additional information

There is one study performed by Chicu et al. (2000) using the saltwater polyp Hydractinia echinata as test organism. After an exposure period of 3 hours, the number of larvae which performed metamorphosis into an adult polyp was counted. Finally an MRC50 (metamorphosis reduction concentration, comparable to EC50) of 99 mg/L was found.