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EC number: 268-369-2 | CAS number: 68082-25-7 This substance is identified by SDA Substance Name: C14-C18 and C16-C18 unsaturated alkyl carboxylic acid triethanol amine salt and SDA Reporting Number: 04-006-14.
- 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
Toxicity to microorganisms
Administrative data
Link to relevant study record(s)
- Endpoint:
- activated sludge respiration inhibition testing
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 2017
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 209 (Activated Sludge, Respiration Inhibition Test (Carbon and Ammonium Oxidation))
- GLP compliance:
- yes (incl. QA statement)
- Analytical monitoring:
- no
- Vehicle:
- no
- Details on test solutions:
- Test item stock solution (TISS): 10.0 mg/mL (5.0 g test item in 500 mL – diluent: ultrapure water)
The test mixtures were prepared at intervals of 10/15 minutes. Each mixture contained an amount of 1.5 g SS (suspended solid). - Test organisms (species):
- activated sludge of a predominantly domestic sewage
- Details on inoculum:
- The inoculum will be a sample of activated sludge from the aeration tank of a domestic sewage treatment plant (e.g. Pian della Genna - Perugia, Italy). The activated sludge will be mixed for about 15 seconds. Washing the sludge will be necessary in order to remove inhibitory substances eventually used in the plan. The sludge will be suspended in chlorine-free tap water to yield a concentration of 3 g suspended solid/L. The sludge will be fed with the synthetic sewage (50 mL/L activated sludge) and will be aerated (e.g. 2 L/minute) at the test temperature then used within two additional days from the day of collection.
- Test type:
- static
- Limit test:
- no
- Total exposure duration:
- 3 h
- Test temperature:
- 20.8 – 22.0° C
- pH:
- pH of mineral medium was in the range of 7.5 ± 0.5 (actual value: 7.39).
- Dissolved oxygen:
- dissolved oxygen concentration above 60 – 70% saturation
- Nominal and measured concentrations:
- Test concentrations: 10, 100, 1000 mg/L (nominal)
- Reference substance (positive control):
- yes
- Duration:
- 3 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 1 000 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Details on results:
- No statistically significant inhibition of the respiration rate (Williams multiple sequential t-test) was observed in the groups treated with test item.
The % total inhibition evaluated in the test item treatments were respectively 14.10%, 0.60% and -65.14%. - Results with reference substance (positive control):
- The 3-hours 50% effect concentration (EC50) of the reference substance 3,5 DCP on the total respiration rate, was calculated to be 6.18 mg/L.
- Reported statistics and error estimates:
- The statistical significance of the effects of the test item compared to controls were investigated using the Williams Multiple Sequential t-test Procedure.
To evaluate the effects of the reference item, a Williams Multiple Sequential t-test Procedure was performed for significance and a non-linear regression (3-param. Normal CDF) was used to evaluate ECx values. The software ToxRat Pro Version 3.2.1 was used for the statistics. - Validity criteria fulfilled:
- yes
- Conclusions:
- No inhibition of the total respiration rate was observed in the test item treated groups. It can be concluded that the 3h-EC50 of TEA Trioleate is >1000 mg/L.
- Executive summary:
The effects of TEA Trioleate on the respiration rate of activated sludge was assessed following the OECD No. 209.
The respiration rates of samples of activated sludge fed with synthetic sewage were measured in an enclosed cell containing an oxygen electrode after a contact time of 3 hours. The absence of inhibition of oxygen consumption by the test item in a preliminary trial, demonstrate that a definitive test is unnecessary, so 3 replicates at the highest tested concentration (1000 mg/L) were used in this study. The preliminary trials showed no abiotic respiration of the test item.
No inhibition of the total respiration rate was observed in the test item treated groups. The % inhibition evaluated in the T1, T2 and T3 were respectively 14.10%, 0.60% and -65.14%. Therefore, it can be concluded that the 3h-EC50 of the test item Trioleato di Tea is >1000 mg/L.
Reference
Description of key information
No inhibition of the total respiration rate was observed in the test item treated groups. It can be concluded that the 3h-EC50 of TEA Trioleate is >1000 mg/L.
Key value for chemical safety assessment
- EC50 for microorganisms:
- 1 000 mg/L
- EC10 or NOEC for microorganisms:
- 1 000 mg/L
Additional information
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