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Ecotoxicological information

Short-term toxicity to fish

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Link to relevant study record(s)

Reference
Endpoint:
short-term toxicity to fish
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Justification for type of information:
Experimental test result performed according to the guideline.
Qualifier:
according to guideline
Guideline:
OECD Guideline 203 (Fish, Acute Toxicity Test)
Principles of method if other than guideline:
Fish Acute Toxicity test according to OECD Guideline 203 was conducted for test material
GLP compliance:
no
Analytical monitoring:
no
Remarks:
stable under recommended conditions
Vehicle:
no
Details on test solutions:
The test substance was soluble in water. Therefore, the test solution was prepared by dissolving 82 mg, 114.8 mg, 160.7 mg, 225 mg, 315.01 mg & 1 gm of the test substance in 10 liters of potable water (passed through reverse osmosis system) with continuous stirring for achieving test concentrations of 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L, respectively
Test organisms (species):
Danio rerio (previous name: Brachydanio rerio)
Details on test organisms:
TEST ORGANISM
- Common name:Zebra Fish
- Strain:Danio rerio
- Source: Orange City Aquarium
- Length at study initiation (length definition, mean, range and SD):average 2.28 cm
- Weight at study initiation (mean and range, SD): average 0.115 g
-Housing:The fishes were kept in a static tank in tap water passed through reverse osmosis system, under natural conditions along with proper feed and aeration.
-Duration of housing: 15 days
-Photoperiod: 12 hours light and 12 hours darkness
-Diet : Standard brand feed, once daily
-Acclimatization: seven days
-feeding frequency: Once in a day
Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
96 h
Hardness:
52.2 mg of CaCO3
Test temperature:
29°C
pH:
7.3
Dissolved oxygen:
7.4 mg/L
Details on test conditions:
TEST SYSTEM
- Test vessel: The test vessels used were all glass bowl aquaria of 12 inch each.
- Aeration: Aeration in test vessels was provided 1 day before the start of experiment
- No. of organisms per vessel: 8 fishes

OTHER TEST CONDITIONS
- Photoperiod:12 hours light and 12-hour darkness

Key result
Duration:
96 h
Dose descriptor:
LC50
Effect conc.:
> 11.48 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Remarks on result:
other: other details not available
Sublethal observations / clinical signs:

8.1. Mortality and symptoms:

Nominal conc. (mg/l)

Number of fish

Mortality (cumulated) after

24h

48h

72h

96h

0 (control)

8

-

-

-

-

8.2

8

-

-

-

-

11.48

8

-

-

-

-

16.072

8

8

-

-

-

22.50

8

8

-

-

-

31.50

8

8

-

-

-

100

8

8

-

-

-

Visible Symptoms: Fish were swimming slowly and settled down like they are dead

Nominal conc. (mg/l)

Number of fish

Symptoms after

24h

48h

72h

96h

0 (control)

8

NS8

NS8

NS8

NS8

8.2

8

NS8

NS8

NS8

NS8

11.48

8

NS8

NS8

NS8

NS8

16.072

8

NS0

NS0

NS0

NS0

22.50

8

NS0

NS0

NS0

NS0

31.50

8

NS0

NS0

NS0

NS0

100

8

NS0

NS0

NS0

NS0

Explanation of symptoms:

A: apathy

N: Narcotic-like state

C: Swimming near water surface

M: Slow movements compared to control

NS: No abnormal symptoms

S: Surfacing behaviour

L: Loss of equilibrium

SM: Shimming movement

H1: Hyperactivity

H2: Hypo activity

B: Bending behavior

F: Fin rot

IS: Invert Swimming

SB: Swimming behaviour

RF: Respiratory Function

P: Pigmentation

pH and oxygen content:

Nominal conc. (mg/l)

pH readings after

24h

48h

72h

96h

0 (control)

7.7

7.6

7.2

7.3

8.2

7.8

6.0

7.7

7.9

11.48

6.1

7.9

7.8

7.9

Nominal conc. (mg/l)

Oxygen content (mg/l) after

24h

48h

72h

96h

0 (control)

6.04

7.6

5.38

5.52

8.2

5.45

5.60

5.18

5.34

 11.48

5.48

5.99

5.14

5.16

Test temperature:

Nominal conc. (mg/l)

Temperature (°C) after

24h

48h

72h

96h

0 (control)

28.8

30.2

31

31.5

8.2

29.8

28.4

30.5

29.9

11.48

30.1

28.6

30.2

30.4

Validity criteria fulfilled:
yes
Conclusions:
Based on nominal concentrations, experimental median lethal Concentrations [LC-50 (96 h)] of test chemical on Zebra Fish Danio rerio was determined to be >11.48 mg/L.
Executive summary:

Fish Acute Toxicity test according to OECD Guideline 203 was conducted for test chemical on Zebra fish. The nominal concentrations selected for the experiment were 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L, and Zebra Fish Danio rerio were exposed to these concentration for 96 hours. The test substance was soluble in water. Therefore, the test solution was prepared by dissolving 82 mg, 114.8 mg, 160.7 mg, 225 mg, 315.01 mg & 1 gm of the test substance in 10 liters of potable water (passed through reverse osmosis system) with continuous stirring for achieving test concentrations of 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L, respectively . Bowl aquaria containing 2 liters of potable water (passed through reverse osmosis system) were loaded with 8 fish. A static procedure was used for the study and it was conducted in compliance with the OECD guideline 203. The nominal concentrations selected for the experiment were 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L and Zebra fish were exposed to this concentration for 96 hours. The lethal concentrations LC50 was determined to be 11.48 mg/L..

After 96 hours of exposure to test chemical to various nominal test concentrations, LC50 was determine to be >11.48 mg/l . Based on the LC50, it can be consider that the chemical was toxic and can be cclassified as aquatic chronic 3 as per the CLP classification criteria.

Description of key information

Short term toxicity to fish:

Fish Acute Toxicity test according to OECD Guideline 203 was conducted for test chemical on Zebra fish. The nominal concentrations selected for the experiment were 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L, and Zebra FishDanio reriowere exposed to these concentration for 96 hours. The test substance was soluble in water. Therefore, the test solution was prepared by dissolving 82 mg, 114.8 mg, 160.7 mg, 225 mg, 315.01 mg & 1 gm of the test substance in 10 liters of potable water (passed through reverse osmosis system) with continuous stirring for achieving test concentrations of 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L, respectively . Bowl aquaria containing 2 liters of potable water (passed through reverse osmosis system) were loaded with 8 fish. A static procedure was used for the study and it was conducted in compliance with the OECD guideline 203. The nominal concentrations selected for the experiment were 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L and Zebra fish were exposed to this concentration for 96 hours. The lethal concentrations LC50 was determined to be 11.48 mg/L..

After 96 hours of exposure to test chemical to various nominal test concentrations, LC50 was determine to be 11.48 mg/l . Based on the LC50, it can be consider that the chemical was toxic and can be cclassified as aquatic chronic 3 as per the CLP classification criteria.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
11.48 mg/L

Additional information

Short term toxicity to fish:

Fish Acute Toxicity test according to OECD Guideline 203 was conducted for test chemical on Zebra fish. The nominal concentrations selected for the experiment were 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L, and Zebra FishDanio reriowere exposed to these concentration for 96 hours. The test substance was soluble in water. Therefore, the test solution was prepared by dissolving 82 mg, 114.8 mg, 160.7 mg, 225 mg, 315.01 mg & 1 gm of the test substance in 10 liters of potable water (passed through reverse osmosis system) with continuous stirring for achieving test concentrations of 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L, respectively . Bowl aquaria containing 2 liters of potable water (passed through reverse osmosis system) were loaded with 8 fish. A static procedure was used for the study and it was conducted in compliance with the OECD guideline 203. The nominal concentrations selected for the experiment were 8.2 mg/L, 11.48 mg/L, 16.072 mg/L, 22.500 mg/L, 31.501 mg/L & 100 mg/L and Zebra fish were exposed to this concentration for 96 hours. The lethal concentrations LC50 was determined to be 11.48 mg/L..

After 96 hours of exposure to test chemical to various nominal test concentrations, LC50 was determine to be 11.48 mg/l . Based on the LC50, it can be consider that the chemical was toxic and can be cclassified as aquatic chronic 3 as per the CLP classification criteria.