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EC number: 291-716-4 | CAS number: 90459-71-5
- 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:
- From April 04 to July 22, 2019
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 019
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 301 F (Ready Biodegradability: Manometric Respirometry Test)
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 835.3110 (Ready Biodegradability)
- Principles of method if other than guideline:
- Test duration: 28 days.
Test environment: Thermostat.
Monitoring of test medium pH: At the start and at the end of the test, in all test item flasks.
Test temperature: 21.8 – 22.1 °C.
pH of test medium: 7.12– 7.43 at the test start.
7.48 – 8.27 at the test end. - GLP compliance:
- yes (incl. QA statement)
Test material
- Reference substance name:
- Octadecanoic acid, reaction products with triethylenetetramine, chloromethane-quaternized
- EC Number:
- 291-716-4
- EC Name:
- Octadecanoic acid, reaction products with triethylenetetramine, chloromethane-quaternized
- Cas Number:
- 90459-71-5
- Molecular formula:
- Not applicable - UVCB substance
- IUPAC Name:
- Octadecanoic acid, reaction products with triethylenetetramine, chloromethane-quaternized
- Test material form:
- solid
1
- Specific details on test material used for the study:
- Test item name: Octadecanoic acid, reaction products with triethylenetetramine, chloromethane-quaternized
Batch number: I1-0000196125
Manufacturing date: July 28, 2018
Expiry date : July 28, 2019
C.A.S. number: 90459-71-5
EEC number : 291-716-4
Molecular weight: UVCB substance
Storage : The test item will be stored at room temperature, in the dark
Study design
- Oxygen conditions:
- aerobic
- Inoculum or test system:
- activated sludge, domestic (adaptation not specified)
- Details on inoculum:
- The study was performed using aerobic activated sludge from BRIANZACQUE civil wastewater treatment plant. A homogenized aliquot of the wet sludge was centrifuged, the supernatant was removed while the solid phase was weighed, dried and the ratio of wet to dry weight was calculated to be equal to 5.37%.
Based on this ratio, calculated amounts of wet sludge was centrifuged, the supernatant was removed and the solid phase was suspended in the test medium to get a concentration equivalent to 3 g dry material per litre.
The prepared sludge inoculum was pre-conditioned to the experimental conditions by aerating it in the dark. The concentrated suspension was used as inoculum to give a final concentration of 15 mg dry material per litre into test flasks. - Duration of test (contact time):
- 28 d
Initial test substance concentrationopen allclose all
- Initial conc.:
- 50 mg/L
- Based on:
- test mat.
- Initial conc.:
- 67 mg/L
- Based on:
- COD
- Details on study design:
- Since the test item was soluble in water, a concentrated stock solution at nominal concentration of 200 mg/L was prepared by weighing 0.0505 g of test item in 250 mL of mineral medium (corresponding to 202 mg/L corrected for the weighed test item).
The proper volume was dosed in the test flasks to obtain the final concentrations of 50 mg/L of test item making to a final volume of 250 mL or 150 mL (based on setting scale) with test medium.
Moreover, stock solutions (10 g/L) of reference item Sodium Benzoate and sterilizing agent HgCl2 were prepared and an appropriate aliquot of the stock solution was added to the test medium (final volume: 250 mL or 150 mL ) in the test flasks to obtain a final concentration of 100 mg/L.
Activated sludge was added to each flask (with the exception of the abiotic control) before incubation.
Finally, the test flasks, containing stir bars covered with teflon, were kept under continuous stirring by the means of a magnetic stirrer for the 28-days test period.
Temperature:
The incubation temperature was continuously monitored during the course of the study by means of a data logger. It was in the range 21.8 – 22.1 °C with a mean value of 22.0 °C and a standard deviation of 0.04 °C. The temperature range recommended by OECD guideline is 22 ± 2 °C, this range was corrected according to the data logger precision, therefore the range to be considered for the test was 20.4 – 23.6 °C while the recorded temperature values were corrected according to the correction factor.
The recorded temperature values during the test period were within the recommended range
and the maximum deviation was lower than 1 °C, as recommended by the guideline.
Reference substance
- Reference substance:
- benzoic acid, sodium salt
Results and discussion
% Degradation
- Parameter:
- % degradation (O2 consumption)
- Value:
- 5.2
- Sampling time:
- 28 d
- Details on results:
- Test item concentration should be 100 mg/L or a concentration giving at least 50-100 ThOD or COD/L.
The tested concentration was 50 mg/L (corresponding to 67 mg COD/L).
All reported results are related to the nominal concentration of test item.
The biodegradation was followed by measuring the oxygen uptake (mg/L) of the test item under defined conditions by the means of a manometric method and calculating from these values the BOD (Biochemical Oxygen Demand).
BOD5 / COD results
BOD5 / COD
- Parameter:
- COD
- Value:
- 1.34 g O2/g test mat.
- Results with reference substance:
- COD= 1.67 mg O2/mg for reference item
% degradation= 79.6%
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- not readily biodegradable
- Conclusions:
- The 10-day window wasn’t start during test period.
Maximum value at the end of the test period (28 days of exposure): 5.2 % (mean percentage values between two test item replicates).
The test item, Octadecanoic acid, reaction products with triethylenetetramine, chloromethane-quaternized, was found to be not ready and completely biodegradable under the conditions applied in a manometric respirometry test, having showed a maximum biodegradation of 5.2% at the end of the test (mean percentage values between two replicates),and the 10-day window wasn’t start.
No significant degradation was observed in the abiotic control.
The test item showed no inhibitory effects on the microorganism activity at the tested concentration, as demonstrated by the biodegradation percentage in the toxicity control exceeding the 25% pass level within 14 days of exposure (29.1%).
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