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Ecotoxicological information

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
short-term toxicity to fish
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Study period:
12 Jan - 14 Jan 1987
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: National guideline study with acceptable restrictions
Justification for type of information:
For the read-across justification see section 13.
Reason / purpose for cross-reference:
read-across source
Qualifier:
according to guideline
Guideline:
other: DIN 38412/15
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 203 (Fish, Acute Toxicity Test)
GLP compliance:
no
Remarks:
The study adhered GLP comparable quality conditions
Specific details on test material used for the study:
- Water solubility: poorly soluble
Analytical monitoring:
no
Vehicle:
no
Details on test solutions:
Preparation of the stock/ test solution:

Direct weight of the test substance into the test vessels, filled up to final volumes of 10 L with copper- and chlorine-free drinking water, then stairing 5 minutes by ultraturrax.
Test organisms (species):
Leuciscus idus
Details on test organisms:
TEST ORGANISM
- Common name: Golden orfe
- Length at study initiation: about 6 cm
- Feeding during test: none
Test type:
static
Water media type:
freshwater
Limit test:
no
Total exposure duration:
48 h
Hardness:
about 16 ° dH (about 93 mg Ca and 12 mg Mg per liter)
pH:
7.6 - 8.4
Dissolved oxygen:
76 - 94 %
Nominal and measured concentrations:
nominal: 1000, 3000, 10000 mg/L
Details on test conditions:
TEST SYSTEM
- Test vessel: fish basin containing 10 L test water
- No. of organisms per vessel: 10
- No. of vessels per concentration:1

TEST MEDIUM / WATER PARAMETERS
- Source/preparation of dilution water: copper- and chlorine-free drinking water
- Ca/Mg ratio: 93 mg Ca/ 12 mg Mg

OTHER TEST CONDITIONS
- Photoperiod: 16 h light per day

EFFECT PARAMETERS MEASURED: mortality after 0, 6, 24 and 48 h and the concentration at which 50 % of the fish will die (LC50) is calculated.
Reference substance (positive control):
no
Key result
Duration:
48 h
Dose descriptor:
LC0
Effect conc.:
10 000 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Key result
Duration:
48 h
Dose descriptor:
LC50
Effect conc.:
> 10 000 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Key result
Duration:
48 h
Dose descriptor:
LC100
Effect conc.:
> 10 000 mg/L
Nominal / measured:
nominal
Conc. based on:
test mat.
Basis for effect:
mortality (fish)
Details on results:
The fish did not show any abnorrnal behaviour.
Sublethal observations / clinical signs:

No mortality was recorded at any test concentrations.

Conclusions:
Octadecanoic acid turned out to be not toxic to Leuciscus idus.
Thus Reaction mass of stearic acid and stearic anhydride does not has to be classified.

Description of key information

Octadecanoic acid turned out to be not toxic to Leuciscus idus.
Thus Reaction mass of stearic acid and stearic anhydride does not has to be classified.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Dose descriptor:
EC50
Effect concentration:
> 10 000 mg/L

Additional information