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EC number: 218-528-7 | CAS number: 2173-56-0
- 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 and sediment: simulation tests
Administrative data
- Endpoint:
- biodegradation in water: sewage treatment simulation testing
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2016-08-08 to 2016-09-07
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 301B
- Deviations:
- yes
- Remarks:
- uncritical (other slightly different temperature, but positive control showed normal degradation range)
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- certified by Landesamt für Umwelt, Wasserwirtschaft und Gewerbeaufsicht, Kaiser-Friedrich-Str. 7,D- 55116 Mainz, Germany
Test material
- Reference substance name:
- Pentyl valerate
- EC Number:
- 218-528-7
- EC Name:
- Pentyl valerate
- Cas Number:
- 2173-56-0
- Molecular formula:
- C10H20O2
- IUPAC Name:
- pentyl valerate
- Test material form:
- liquid
Constituent 1
- Radiolabelling:
- no
Study design
- Oxygen conditions:
- aerobic
- Remarks:
- test vessels were aerated with purified, CO2-scrubbed, moistened air
- Inoculum or test system:
- other: Activated sludge from a biologic sewage treatment plant was used. The chosen plant is treating mostly domestic sewage.
- Details on source and properties of sediment:
- The sludge was taken from the activation basin of the ESN (Stadtentsorgung Neustadt, Im Altenschemel, NW-Lachen-Speyerdorf, mostly domestic sewage) sewage treatment plant, at August 5th, 2016. The sludge was filtrated, washed twice with tap water, washed with and resuspended in test medium and aerated until use. Dry matter: 3600mg suspended solids/L, microorganisms not specified
- Details on inoculum:
- Activated sludge was used as inoculum (concentration in the test 25.0 mg dry matter/L)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 28.7 mg/L
- Based on:
- test mat.
- Parameter followed for biodegradation estimation:
- CO2 evolution
- Details on study design:
- Sludge from an activation basin of a biological sewage treatment plant was given in a defined mineral medium under aerobic conditions in the dark. Then the test substance ( 29-30mg/L, ca. 20mg/L organic C), the positive control (anilline, 26.3mg/L, 20.0/L organic C) were added. The amount of emitted CO2 was trapped in 0.25 M NaOH and analysed on days 0,2,4,7,9,11,18,23 and 29 using a carbon analyser TOC multi N/C, Analytik Jena. On day 28 HCl was added to the test flasks to drive dissolved CO2 out. The content of CO2 was determined as sodium hydrogen carbonate and sodium carbonate (IC) the emitted carbon and degradation values were calculated. 2 flasks with test substance, 2 flasks with positive control, an abiotic control (with mercury chloride, kills all organisms), and a toxicity control (with both test substance and positive control) were measured in general.
Reference substance
- Reference substance:
- aniline
Results and discussion
% Degradation
- Key result
- % Degr.:
- 73
- Parameter:
- CO2 evolution
- Sampling time:
- 28 d
- Transformation products:
- not measured
- Details on results:
- The following data were determined for the test item Pentyl valerate:
10-day-window: day 3 – 13
degradation at the end of 10-day-window 65 %
degradation at the end of the test 73 % - Results with reference substance:
- Aniline (Phenylamine, C6H5NH2, CAS-No. 62-53-3) was used as readily biodegradable positive control.
Degradation of the positive control was 69 % after 9 days.
Applicant's summary and conclusion
Validity criteria
- Validity criteria fulfilled:
- yes
- Remarks:
- Both replicates showed good correspondence.
- Conclusions:
- The test substance is not toxic towards the inoculum (the microorganisms from the sludge) in a concentration of 30.9 mg/L.
Pentyl valerate is readily biodegradable following OECD 301B/EU C.4-C.
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