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Diss Factsheets
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EC number: 700-100-0 | CAS number: 39716-58-0
- 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: screening tests
Administrative data
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 005
- Report date:
- 2005
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 A (Ready Biodegradability: DOC Die Away Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-A (Determination of the "Ready" Biodegradability - Dissolved Organic Carbon (DOC) Die-Away Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Pent-4-enoic acid
- EC Number:
- 209-732-7
- EC Name:
- Pent-4-enoic acid
- Cas Number:
- 591-80-0
- Molecular formula:
- C5H8O2
- IUPAC Name:
- pent-4-enoic acid
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic, non-adapted
- Details on inoculum:
- Source: Municipal sewage treatment plant, D-31137 Hildesheim
Pretreatment The activated sludge was washed twice with autoclaved tap water and maintained in an aerobic condition by aeration for 4 hours
and then homogenized with a mixer. Thereafter the sludge was filtered with folded filter and aerated with CO2-free air for 3 days. 25 mL/L were used to initiate inoculation.
Colony forming units of the inoculum: ca. 107 - 108 CFU/mL - Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 35 mg/L
- Based on:
- other: analysed carbon content of 0.589 mg C/mg test item
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- DOC removal
- Details on study design:
- Duration: 28 d
Application: Once at test start
Test vessels: 2000 mL, Erlenmeyer flask
Volume of the test medium: 1000 mL
Water: Aqua demin.
Test medium: Mineral nutrient solution acc. to OECD 301 A / EC Directive 92/69 EC, C.4A
Temperature: 22 ± 2 °C
Photoperiod: Dark
Dispersion treatment: Continuously stirring
Samples were taken on days 0, 1, 3, 7, 14, 21 and 28.
Reference substance
- Reference substance:
- acetic acid, sodium salt
Results and discussion
- Test performance:
- toxicity control: 93 % elimination after 7 days, 98 % elimination after 28 days
% Degradationopen allclose all
- Parameter:
- % degradation (DOC removal)
- Value:
- 3
- Sampling time:
- 1 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 92
- Sampling time:
- 3 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 95
- Sampling time:
- 7 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 96
- Sampling time:
- 14 d
- Parameter:
- % degradation (DOC removal)
- Value:
- 99
- Sampling time:
- 28 d
BOD5 / COD results
- Results with reference substance:
- day % degradation
1 57
3 92
7 96
14 97
21 100
28 99
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable
- Conclusions:
- The test item must be regarded to be readily biodegradable in the 10-d-window and after 28 days.
The validity criteria of the test according to the guideline are fulfilled.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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