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Ecotoxicological information

Long-term toxicity to fish

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Administrative data

Endpoint:
fish short-term toxicity test on embryo and sac-fry stages
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
disregarded due to major methodological deficiencies
Reliability:
3 (not reliable)
Rationale for reliability incl. deficiencies:
other: Not a guideline study; Insufficient documentation.

Data source

Reference
Reference Type:
review article or handbook
Title:
Aquatic toxicity tests on inorganic elements occuring in oil shale.
Author:
Birge W.J., Black J.A., Westerman A.G., Hudson J.E.
Year:
1980
Bibliographic source:
Gale, C. (Ed.) Oil shale symosium: sampling, analysis and quality assurance. Ohio, Cinncinati. Pp 519-534.

Materials and methods

Test guideline
Qualifier:
no guideline followed
GLP compliance:
no

Test material

Constituent 1
Reference substance name:
7791-18-6
Cas Number:
7791-18-6
IUPAC Name:
7791-18-6
Constituent 2
Reference substance name:
Magnesium chloride hexahydrate
IUPAC Name:
Magnesium chloride hexahydrate
Details on test material:
MgCl2.6H2O

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
Oncorhynchus mykiss (previous name: Salmo gairdneri)
Details on test organisms:
embryos

Study design

Test type:
semi-static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
28 d
Post exposure observation period:
no data

Test conditions

Hardness:
Hardness 92-110 mg CaCO3/L
Test temperature:
12-13°C
pH:
6.9-7.8
Dissolved oxygen:
9.3-10.1 mg O2/L
Salinity:
no data
Nominal and measured concentrations:
not reported
Details on test conditions:
Semi-static (renewal every 12h)

Results and discussion

Effect concentrationsopen allclose all
Duration:
28 d
Dose descriptor:
other: LC1
Effect conc.:
368 mg/L
Nominal / measured:
meas. (not specified)
Conc. based on:
dissolved
Remarks:
magnesium
Basis for effect:
mortality
Remarks on result:
other: 95% CL 255-476
Duration:
28 d
Dose descriptor:
LC10
Effect conc.:
661 mg/L
Nominal / measured:
meas. (not specified)
Conc. based on:
dissolved
Remarks:
magnesium
Basis for effect:
mortality
Remarks on result:
other: 95% CL 518-788
Duration:
28 d
Dose descriptor:
LC50
Effect conc.:
1 355 mg/L
Nominal / measured:
meas. (not specified)
Conc. based on:
dissolved
Remarks:
magnesium
Basis for effect:
mortality
Remarks on result:
other: 95% CL 1199-1507

Applicant's summary and conclusion

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