Strontium sulphate

Toxicity to other aquatic organisms

Administrative data

Endpoint:

toxicity to other aquatic vertebrates

Type of information:

migrated information: read-across from supporting substance (structural analogue or surrogate)

Adequacy of study:

supporting study

Reliability:

3 (not reliable)

Rationale for reliability incl. deficiencies:

other: The paper itself provides little information on test methodology, measured Sr-levels are not reported, and the derived end parameters are not useful for risk assessment purposes.

Data source

Reference

Reference Type:

publication

Title:

Aquatic toxicology of trace elements of coal and fly ash

Author:

Birge WJ

Year:

1978

Bibliographic source:

In: Thorpe JH, Gibbons JW (Eds.), Energy and Environmental Stress in aquatic Systems. Department of Energy Symposium Series CONT 771114

Materials and methods

Test guideline

Qualifier:

no guideline available

Guideline:

other: according to Birge and Just, 1975

Deviations:

no

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

strontium chloride, hexahydrate

IUPAC Name:

strontium chloride, hexahydrate

Constituent 2

Reference substance name:

10025-70-4

Cas Number:

10025-70-4

IUPAC Name:

10025-70-4

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Sampling and analysis

Analytical monitoring:

yes

Test solutions

Vehicle:

not specified

Test organisms

Test organisms (species):

Gastrophryne carolinensis

Details on test organisms:

fertilised eggs

Study design

Test type:

semi-static

Water media type:

freshwater

Limit test:

no

Total exposure duration:

7 d

Test conditions

Hardness:

195 +/- 5.4 mg/L as CaCO3

Test temperature:

22.0 +/-1 degrees Celcius

pH:

7.4 +/- 1.0

Dissolved oxygen:

near saturation

Nominal and measured concentrations:

not reported; 10-14 concentrations were tested

Details on test conditions:

Exposure periods started upon fertilisation of the eggs and ended at 4 days post-hatching, indicating that test results should be considered as chronic tests
No further details are provided

Results and discussion

Effect concentrations

Effect concentrations 1

Duration:

7 d

Dose descriptor:

LC50

Effect conc.:

160 µg/L

Nominal / measured:

meas. (not specified)

Conc. based on:

element

Basis for effect:

other: mortality and teratogenity

Remarks on result:

other: 120-210

Effect concentrations 2

Duration:

7 d

Dose descriptor:

other: LC1

Effect conc.:

2.4 µg/L

Nominal / measured:

meas. (not specified)

Conc. based on:

element

Basis for effect:

other: mortality and teratogenity

Remarks on result:

other: 1.0-4.6

Details on results:

Sr-levels were measured indicating that reported effect levels are based on measured values or are based on nominal values that were relevant for the actual metal concentration.

Reported statistics and error estimates:

log-probit analysis - method of Daum (1969)

Applicant's summary and conclusion

Validity criteria fulfilled:

not specified

Conclusions:

The paper itself provides little information on test methodology, measured Sr-levels are not reported, and the derived end parameters are not useful for risk assessment purposes.