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EC number: 246-916-6 | CAS number: 25377-72-4
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Biodegradation in water: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Study ended in April 1984
- 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:
- 1 984
- Report date:
- 1985
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- other: Annex V of the 6th Amendment (79/931/EEC) of the EEC Directive
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Deviations:
- no
- GLP compliance:
- not specified
Test material
- 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
- Physical state: 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.
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- not specified
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 2 mg/L
- Based on:
- test mat.
Results and discussion
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- >= 3 - <= 10
- Sampling time:
- 28 d
- Remarks on result:
- other: calculated based on theoretical oxygen demand mg O/mg test substance
- Details on results:
- The test substance pentene-1 was oxidised to 3 - 10% of the theoretical oxygen demand by day 28. The shape of the biodegradation curve suggests that a lag period of at least 5 days occurred before any degradation started and that degradation would have continued after 28 days.
Slight inhibition of microbial activity, as seen in the positive control group, under test conditions is not considered to be significant.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- other: not readily biodegradable
- Conclusions:
- Pentene-1 was tested in the Closed Bottle test which is suitable for such volatile compounds. In this test the amount of oxygen consumed
in 28 days was only 3 - 10% of the theoretical oxygen demand.
Pentene-1 caused no significant inhibition of the microorganisms in the test system. Pentene-1 was not "readily biodegradable" in this test. - Executive summary:
Pentepe-1 was tested in the Closed Bottle test which is suitable for such volatile compounds. In this test the amount of oxygen consumed
in 28 days was only 3 - 10% of the theoretical oxygen demand.
Pentene-1 caused no significant inhibition of the microorganisms in the test system. Pentene-1 was not "readily biodegradable" in this test.
There are no information available regarding the GLP status of test facility however the test followed the adopted test guidelines. Therefore a
reliability of 2 is assigned.
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