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EC number: 948-032-2 | CAS number: -
- 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:
- May 2018 to August 2018
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 018
- Report date:
- 2018
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Terpene Dimers
- EC Number:
- 948-032-2
- IUPAC Name:
- Terpene Dimers
- Test material form:
- liquid
- Details on test material:
- Batch no. DF1710011
Constituent 1
Study design
- Inoculum or test system:
- sewage, predominantly domestic (adaptation not specified)
- Details on inoculum:
- The sludge was taken from the activation basin of the sewage treatment plant, In den Seewiesen, 67435 Edenkoben. Date of collection: 09. May 2018, batch no: 20180509. The sludge was filtrated, washed with medium 2x, and re-suspended in test medium. It was then aerated. The dry matter was determined as 3880 mg suspended solids/L.
- Duration of test (contact time):
- 28 d
Initial test substance concentration
- Initial conc.:
- 30 mg/L
- Based on:
- test mat.
Parameter followed for biodegradation estimation
- Parameter followed for biodegradation estimation:
- O2 consumption
- Details on study design:
- A measured volume of inoculated mineral medium, containing a known concentration of test item as the nominal sole source of organic carbon, is stirred in a closed flask at a constant temperature for up to 28 days. The consumption of oxygen is determined from the change in pressure in the apparatus. Evolved carbon dioxide is absorbed in soda lime (mixture of sodium hydroxide and calcium hydroxide). The amount of oxygen taken up by the microbial population during biodegradation of the test item (corrected for uptake by blank inoculum, run in parallel) is expressed as a percentage of ThOD (Theoretical Oxygen Demand).
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
- Test performance:
- No observations were made which might cause doubts concerning the validity of the study outcome. The result of the test can be considered valid.
% Degradation
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 0
- Sampling time:
- 28 d
- Details on results:
- The degree of biodegradation reached 0 % after 28 days. The 10-day-window could not be detected. No degradation and no lag phase was observed. For the test item Terpene Dimers no biodegradation was observed after 28 days. The 10-
day window could not be determined. The criterion of reaching 60% of degradation after 28 days is not met. Terpene Dimers is therefore considered as “not readily biodegradable” following OECD 301F/EU C.4-D.
BOD5 / COD results
- Results with reference substance:
- Parameter Criterion Found Assessment
Degradation of positive control > 60% < 14 days 3 days valid
Mean O2 demand of the controls < 60 mg/L 24.5 mg/L valid
Degradation in the toxicity flask on day 14 > 25% 43.9 % non - toxic
pH at the end of the test 6.0 – 8.5 7.3 – 7.8 valid
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- All validity criteria were met. Oxygen consumption in the blank controls and in the positive controls was normal, indicating that the test system has worked properly. The ThOD of the test item was calculated based on a theoretical formula of the test item,
calculated as C7.32H11.78O0.02. The formula was based on elemental analysis. The sum of analysed elements (87.98 % C, 11.87 % H, 0.32 % O) was 100.17 %. For the test item Terpene Dimers no biodegradation was observed after 28 days. The 10-
day window could not be determined. The criterion of reaching 60% of degradation after 28 days is not met. Terpene Dimers is therefore considered as “not readily biodegradable” following OECD 301F/EU C.4-D. No observations were made which might cause doubts concerning the validity of the study outcome. The result of the test can be considered valid. - Executive summary:
The test item Terpene Dimers was tested using a concentration of 30 mg test item/L (equivalent to a theoretical oxygen demand of 99.65 mg O2/L). Activated sludge was used as inoculum. The test was left running for 28 days. All validity criteria were met. The positive control reached the pass level of 60% on day 3 (criterion: <= 14).
The following data could be determined for the test item Terpene Dimers:
10-day-window: not detected
Degradation phase: none
degradation at the end of 10-day-window: none
degradation at the end of the test: 0 %
For the test item Terpene Dimers no biodegradation was observed after 28 days. The 10 - day window could not be determined. The criterion of reaching 60% of degradation after 28 days was not met. Terpene Dimers is therefore considered as “not readily biodegradable” following OECD 301F/EU C.4-D.
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