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Short-term toxicity to fish

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Reference
Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19.7. – 26.10.2000
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Meets generally accepted scientific principles, acceptable for assessment.
Qualifier:
according to guideline
Guideline:
other: Test No. L 47 "Fish, Acute Toxicity test. Chemical formulations and waste waters."
Deviations:
no
Principles of method if other than guideline:
- Principle of test:A sample of the tested substance was dissolved in the dilution water at a concentration of 0.1 g/L. The total volume for one dilution is 1000 ml in preliminary test and 4000 ml in limit test.- Short description of test conditions:The dilution water should have a pH of 7.8 and is saturated with oxygen at a temperature 20 – 24°C.Test duration 96 hours, the temperature of the solutions 22.0 ± 1.0 °C.- Parameters analysed / observed: mortality at 48 and 96 h
GLP compliance:
no
Analytical monitoring:
no
Test organisms (species):
Poecilia reticulata
Details on test organisms:
TEST ORGANISM- Common name: Guppy- Strain: Poecilia reticulata- Source: AKVA-SALON, 503 02 Neděliště 51- Age at study initiation (mean and range, SD): 3 - 4 monts- Length at study initiation (length definition, mean, range and SD): 2 - 3 cmACCLIMATION- Acclimation period: yes- Acclimation conditions (same as test or not): same as testFEEDING DURING TESTno feeding during testfasted 72 hours before test
Test type:
static
Water media type:
freshwater
Limit test:
yes
Total exposure duration:
96 h
Test temperature:
22.0 ± 1.0 °C
pH:
from 8.26 (0 hour) to 7.78 (96 hour)control: 7.87 (0 hour) to 7.74 (96 hour)
Dissolved oxygen:
from 8.9 (0 hour) to 8.1 mg/L O2 (96 hour)control: from 8.9 (0 hour) to 8.2 mg/L
Nominal and measured concentrations:
100 mg.L-1100.9 mg.L-1
Details on test conditions:
TEST SYSTEM- Material, size, headspace, fill volume: open 10 L glass aquarium- Aeration: without- No. of organisms per vessel: Preliminary test: 3 animals Limit test: 10 animals - No. of vessels per concentration/control (replicates): no replicatesTEST MEDIUM / WATER PARAMETERSDilution water: standard dilution water was prepared by mixing 2.5 ml of stock solutions (A,B,C,D) with 1000 ml distilled waterA) 117.6 g CaCl3.2H2O in 1L of distilled waterB) 49.3 g MgSO4.7H2O in 1L of distilled waterC) 25.9 g NaHCO3 in 1L of distilled waterD) 2.3 g KCl in 1L of distilled waterThe dilution water should have a pH of 7.8 and is saturated with oxygen at a temperature 20 – 24°C. EFFECT PARAMETERS MEASURED (with observation intervals if applicable) : mortality at 48, 96 h TEST CONCENTRATIONS - Range finding study: 100, 75, 50, 25 mg.L-1 - Test concentration: 100.9 mg.L-1 - Results used to determine the conditions for the definitive study: no mortality in preliminary test
Reference substance (positive control):
yes
Remarks:
potassium dichromate
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
100 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Key result
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
100 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Validity criteria fulfilled:
yes
Executive summary:

The test substance, Ostazinová modř H-5R , was tested for acute toxicity on fish Poecilia reticulata. The test was performed according to method No. L 47 "Fish, Acute Toxicity test. Chemical formulations and waste waters".

Results:

48 h - LC50 = 100.0 mg.L-1

96 h - LC50 = 100.0 mg.L-1

Description of key information

96 h - LC50 = 100.0 mg.L-1

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
100 mg/L

Additional information

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