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Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
Study period:
March 27-31, 1987
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Report date:
1987

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: Protocol for freshwater Fish static Acute toxicity test following TSCA guidelines, November 1986.
Deviations:
not specified
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
419-690-3
EC Name:
-
Cas Number:
88020-55-7
Molecular formula:
[(C12H25)3NH]4Mo8O26
IUPAC Name:
tridodecylamine hydrate molybdenum

Sampling and analysis

Analytical monitoring:
not specified

Test solutions

Vehicle:
not specified
Details on test solutions:
Identity and concentration of auxiliary solvent for dispersal : preparation of a solution stock of 1g/l with 0.5 ml/l of acetone.
Filtration and successive dilutions of aqueous fractions.

Test organisms

Test organisms (species):
Lepomis macrochirus

Study design

Test type:
static
Water media type:
not specified
Total exposure duration:
96 h

Test conditions

Hardness:
48 mg CaCO3/L

Results and discussion

Effect concentrationsopen allclose all
Duration:
24 h
Dose descriptor:
LC50
Effect conc.:
> 110 mg/L
Basis for effect:
mortality (fish)
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
> 110 mg/L
Basis for effect:
mortality (fish)
Duration:
72 h
Dose descriptor:
LC50
Effect conc.:
> 110 mg/L
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
> 110 mg/L
Basis for effect:
mortality (fish)
Duration:
96 h
Dose descriptor:
NOEC
Effect conc.:
>= 110 mg/L
Details on results:
% loss in concentration of the test substance over test period : 0 ...

Applicant's summary and conclusion

Conclusions:
The 96-hour LC50 (based on mean measured concentrations) was > 110mg/L.
The NOEC was 110mg/L.
NORCAT M is classified practically non-toxic to bluegill.