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Ecotoxicological information

Toxicity to other aquatic organisms

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Administrative data

Endpoint:
toxicity to other aquatic vertebrates
Type of information:
experimental study
Adequacy of study:
other information
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
This robust summary has a reliability rating of 2 because the study procedure is reasonably well documented and meets generally accepted scientific principles, and is acceptable for assessment. However analytical data were not provided and there are no exposure solution parameters reported.

Data source

Reference
Reference Type:
publication
Title:
Determination and Interpretation of hydrocarbon toxicity to ciliate protozoa.
Author:
Rogerson, A.
Year:
1983
Bibliographic source:
Aquatic Toxicology 3: 215-228.

Materials and methods

Principles of method if other than guideline:
aquatic toxicity test with Ciliata
GLP compliance:
no

Test material

Constituent 1
Chemical structure
Reference substance name:
Octane
EC Number:
203-892-1
EC Name:
Octane
Cas Number:
111-65-9
Molecular formula:
C8H18
IUPAC Name:
octane
Details on test material:
- Name of test material (as cited in study report): n-Octane
- Analytical purity: no data

Sampling and analysis

Analytical monitoring:
yes

Test solutions

Vehicle:
no

Test organisms

Test organisms (species):
other: Tetrahymena elliottii Ciliophora, Protozoa)

Study design

Test type:
static
Water media type:
freshwater
Total exposure duration:
24 h

Results and discussion

Any other information on results incl. tables

The 24-hour toxicity threshold was 0.445 mg/L. The lowest and highest concentrations causing cell death and permitting cell replication, respectively, were analytically determined. The intermediate concentration approximated the acute toxicity threshold level.

Applicant's summary and conclusion

Validity criteria fulfilled:
not applicable
Conclusions:
The 24-hour toxicity threshold was 0.445 mg/L. This value represents the intermediate concentration between the lowest and highest concentrations causing cell death and permitting cell replication based on measured values.
Executive summary:

The 24-hour toxicity threshold was 0.445 mg/L. This value represents the intermediate concentration between the lowest and highest concentrations causing cell death and permitting cell replication based on measured values.