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Administrative data

Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP study according EU/OECD guideline.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1998

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EU Method C.1 (Acute Toxicity for Fish)
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
1,1-diphenylethylene
EC Number:
208-482-6
EC Name:
1,1-diphenylethylene
Cas Number:
530-48-3
Molecular formula:
C14H12
IUPAC Name:
1,1'-ethene-1,1-diyldibenzene

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Danio rerio (previous name: Brachydanio rerio)

Study design

Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
96 h

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
LC0
Effect conc.:
100 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
48 h
Dose descriptor:
LC0
Effect conc.:
22 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
72 h
Dose descriptor:
LC0
Effect conc.:
10 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
LC0
Effect conc.:
10 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
24 h
Dose descriptor:
LC50
Effect conc.:
> 500 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
207 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
72 h
Dose descriptor:
LC50
Effect conc.:
107 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
62 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
72 h
Dose descriptor:
LC100
Effect conc.:
500 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
LC100
Effect conc.:
220 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)

Any other information on results incl. tables

Sublethal observations / clinical signs:

Test concentrations:

0 / 5 / 10 / 22 / 50 / 100 / 220 /500 mg/L (nominal concentration)

0 / 0.8 /1.9 / 2.7 /1.9 / 3.0 / 2.5 / 6.4 mg/L (mean measured concentration)

Observations:

Symptoms and lethality were observed at 22 - 500 mg/L.

The 5 and 10 mg/L groups exhibited symptoms but no lethality.

The fish showed changes in appearance only in the 22 - 500 mg/L groups and changes in behavior, swimming behavior and respiration rate in all tested concentration groups. Symptoms occurred during the entire exposure time.

Dead fish showed dark or light colored integument and redded opercula. Some fish were curved.

Applicant's summary and conclusion

Validity criteria fulfilled:
yes
Executive summary:

Under the conditions of this test the LC50 of the test substance after 96 hours was 62 mg/L (nominal concentration) and is above the solubility limit of the test substance in the test water.

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