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EC number: 500-241-6 | CAS number: 69011-36-5 1 - 2.5 moles ethoxylated
- 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:
- toxicity to microorganisms, other
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- guideline study with acceptable restrictions
- Remarks:
- Data based on the inhibition control of a ready biodegradability study
- Reason / purpose for cross-reference:
- reference to same study
- Reason / purpose for cross-reference:
- read-across: supporting information
- Qualifier:
- according to guideline
- Guideline:
- other: OECD Guideline 301 B (Ready Biodegradability: CO2-evolution test
- GLP compliance:
- no
- Remarks:
- The test facility is certified according to GLP, the performance of the study occurred under GLP-near conditions without the formal procedure of GLP quality assurance.
- Analytical monitoring:
- no
- Vehicle:
- no
- Test organisms (species):
- activated sludge, domestic
- Details on inoculum:
- - Source of inoculum/activated sludge (e.g. location, sampling depth, contamination history, procedure): Activated sludge from the municipal wastewater treatment plant Breisgauer Bucht, Germany treating predominantly domestic wastewater
- Pretreatment: The activated sludge was washed twice by settling the sludge, decanting the supernatant and resuspending the sludge in aerated tap water
- Concentration of sludge: 30 mg solids/L - Test type:
- static
- Water media type:
- freshwater
- Limit test:
- yes
- Total exposure duration:
- 14 d
- Test temperature:
- 21 - 22 °C
- Nominal and measured concentrations:
- 5.15 ml of a stock solution of 10 g/I reference substance and 43.5 mg of the test item were added to the vessel. This corresponds with a concentration of 40.1 mg/I organic carbon.
- Details on test conditions:
- TEST CONDITIONS
- Composition of medium: acc. to guideline
- Test temperature: 21.0 - 21.5 QC
- Suspended solids concentration: 30 mg/L dry solids
- Continuous darkness: diffuse light
TEST SYSTEM
- Culturing apparatus: Gas wash bottles (2000 ml volume) with lateral connecting pieces for butyl rubber septums were used as reactors. The CO2 produced in the reactors was absorbed in two 250 ml gas wash bottles in series.
- Number of culture flasks/concentration: 3
- Details of trap for CO2 and volatile organics if used: 0.2 M NaOH
SAMPLING
- Sampling frequency: on days 0, 4, 7, 11, 14, 21, and 28
CONTROL AND BLANK SYSTEM
- Inoculum blank: 3 replicates
- Toxicity control: 1 replicate - Reference substance (positive control):
- yes
- Remarks:
- sodium benzoate
- Duration:
- 14 d
- Dose descriptor:
- NOEC
- Effect conc.:
- 43.5 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- other: CO2 evolution
- Remarks:
- Result of toxicity control from ready biodegradability test
- Details on results:
- The degradation in the toxicity control was 68.6% within 14 days and 76.1% within 28 days (after acidification)
- Validity criteria fulfilled:
- not applicable
Reference
The toxicity control attained 68.6% degradation after 14 days of incubation.
“If in a toxicity test, containing both the test and reference substance, less than 35% degradation (based on total DOC) or less than 25% (based on total ThOD or ThCO2) occurred within 14 days, the test substance can be assumed to be inhibitory.” (OECD guideline 301)
Since more than 35% degradation occurred in the toxicity control, the substance is with high probability not toxic to aquatic microorganisms. The test item concentration in the toxicity control of 43.5mg/L can be used as NOEC value for the toxicity to aquatic microorganisms.
Description of key information
NOEC (14 d): 43.5 mg/L (toxicity control of OECD 301 B; read-across)
Key value for chemical safety assessment
Additional information
Experimental data on the toxicity of Isotridecanol, ethoxylated, < 2.5 EO are not available. The assessment is based on the results of a toxicity control from a biodegradation study on the structurally similar substance Isotridecanol, ethoxylated, (3EO). The degradation rate of toxicity control of a study following OECD 301 B was 68.6% after 14 days.
Since more than 35% degradation occurred in the toxicity control, the substance is with high probability not toxic to aquatic microorganisms. The test item concentration in the toxicity control of 43.5 mg/L can be used as NOEC value for the toxicity to aquatic microorganisms.
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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