Pentene

Short-term toxicity to fish

Administrative data

Endpoint:

short-term toxicity to fish

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Commenced on 8 November 1983

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Study conducted in accordance with generally accepted scientific principles, possibly with incomplete reporting or methodological deficiencies, which do not affect the quality of the relevant results.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1984

Report date:

1984

Materials and methods

Test guideline

Qualifier:

no guideline followed

Principles of method if other than guideline:

Acute toxicity to fish was tested using the rainbow trout Salmo gairdneri to derive 96 hours LC50.

Statistical analysis was conducted according to the following reference;
Finney, D. J. (1971) Probit Analysis. Cambridge University Press, 3rd Edition, p. 333.

GLP compliance:

not specified

Test material

Test material information

Constituent 1

Reference substance name:

Pentene

EC Number:

246-916-6

EC Name:

Pentene

Cas Number:

25377-72-4

Molecular formula:

C5H10

IUPAC Name:

pent-1-ene

Details on test material:

- Name of test material (as cited in study report): pentene-1 (n-amylene)

- Substance type: Colourless volatile liquid.

- Analytical purity: 94.4%.

- Lot/batch No.: ST83/065

- Stability under test conditions: The test substance was judged to have been stable for the duration of this study.

- Storage condition of test material: In the dark at ambient temperature.

Sampling and analysis

Analytical monitoring:

not specified

Test solutions

Vehicle:

yes

Test organisms

Test organisms (species):

Oncorhynchus mykiss (previous name: Salmo gairdneri)

Study design

Test type:

static

Water media type:

freshwater

Limit test:

no

Total exposure duration:

96 h

Results and discussion

Effect concentrations

Duration:

96 h

Dose descriptor:

LC50

Effect conc.:

7.6 mg/L

Nominal / measured:

nominal

Conc. based on:

test mat.

Basis for effect:

mortality (fish)

Remarks on result:

other: 95% fiducial limits: 5.7 - 9.9 mg/l

Applicant's summary and conclusion

Validity criteria fulfilled:

not specified

Conclusions:

The acute toxicity of the test material, pentene-1, to the freshwater fish rainbow trout gave a 96-Hour LC50 value of 7.6 mg/l with 95% fiducial limits of 5.7 – 9.9 mg/l.

Executive summary:

The acute toxicity of pentene-1 to the rainbow trout, Salmo gairdneri, was determined in a 96 h static teat with daily renewal of the test

solutions. Because of the known high volatility of pentene-1, the test was carried out in completely full and sealed vessels. The 96 h LC50 was

calculated tobe 7.6 mg/l (95% fiducial limits 5.7 - 9.9 mg/l).

The study methodologies or guidelines were not specified however the sufficient endpoint was derived to assess the acute toxiicty of the test organism. There are no information available regarding the testing facility therefore a reliability of 2 is assigned.