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Diss Factsheets
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EC number: 203-140-2 | CAS number: 103-74-2
- 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:
- 2001-05-15 - 2001-10-22
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: well-documented GLP study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 001
- Report date:
- 2001
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 D (Ready Biodegradability: Closed Bottle Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.4-E (Determination of the "Ready" Biodegradability - Closed Bottle Test)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 835.3110 (Ready Biodegradability)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- UK GLP Monitoring Authority
Test material
- Reference substance name:
- Pyridine-2-ethanol
- IUPAC Name:
- Pyridine-2-ethanol
- Details on test material:
- - Physical state: liquid
- Lot/batch No.: 128003
- Storage condition of test material: room temperature, in the dark until 31 July 2001, thereafter approximately 4°C, in the dark
- Other: Data relating to the identity, purity and stability of the test material are the responsibility of the Sponsor.
Constituent 1
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- sewage, domestic (adaptation not specified)
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 2 mg/L
- Based on:
- formulation
Results and discussion
% Degradation
- Parameter:
- % degradation (DOC removal)
- Value:
- 16
- Sampling time:
- 28 d
Any other information on results incl. tables
The mean oxygen depletion in the inoculated control vessels after 28 days was 1.010 mg O2/L and the residual oxygen concentration in the test bottles was greater than 0.50 mg O2/L thereby satisfying the validation criterion given in the OECD Test Guidelines. The difference between the extremes of replicate oxygen depletion values at the end of the test was <20% and hence satisfied the validation criterion given in the OECD Test Guidelines. The test material attained 16% degradation after 28 days and, therefore, cannot be considered as readily biodegradable under the strict terms and conditions of OECD Guideline No 301D. Variation in degradation rates on different sampling days was considered to be due to variation in respiration rates between control and test vessels. Nitrate and nitrite analysis of the test solutions at each sampling occasion confirmed that no significant oxygen consumption as a result of nitrification occurred during the study. Examination of the degradation curve for the toxicity control showed that the toxicity control attained in excess of 25% degradation by day 14 of the study thereby confirming that the test material was not toxic to the sewage treatment micro-organisms used in the study. After 28 days the toxicity control had attained 30% degradation. The standard material, sodium benzoate, attained 74% degradation after 28 days thereby confirming the suitability of the test method and culture conditions.
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- inherently biodegradable
- Conclusions:
- The test material attained 16% degradation after 28 days and therefore cannot be considered to be readily biodegradable under the strict terms and conditions of OECD Guideline 301D.
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