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Diss Factsheets
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EC number: 940-786-0 | 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
Short-term toxicity to aquatic invertebrates
Administrative data
- Endpoint:
- short-term toxicity to aquatic invertebrates
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: Acceptable, well-documented, peer-reviewed publication which meets basic scientific principles.
Data source
Reference
- Reference Type:
- publication
- Title:
- Unnamed
- Year:
- 1 999
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- EU Method C.2 (Acute Toxicity for Daphnia)
- GLP compliance:
- yes
Test material
- Reference substance name:
- Benzene, C10-13-alkyl derivs.
- EC Number:
- 267-051-0
- EC Name:
- Benzene, C10-13-alkyl derivs.
- Cas Number:
- 67774-74-7
- IUPAC Name:
- undecylbenzene
- Reference substance name:
- Undecylbenzene
- EC Number:
- 229-806-2
- EC Name:
- Undecylbenzene
- Cas Number:
- 6742-54-7
- IUPAC Name:
- undecylbenzene
- Details on test material:
- - Molecular weight (if other than submission substance): 239.6
- Composition of test material, percentage of components: 0.9% C9 or less, 9.4% C10, 40.2% C11, 32.7% C12, 15.9% C13, 0.9% C14, 17% 2 Ph alkanes, <0.5% tetralines
Constituent 1
Constituent 2
Sampling and analysis
- Analytical monitoring:
- yes
- Details on sampling:
- no information
Test solutions
- Vehicle:
- no
- Details on test solutions:
- A test solutions was prepared, without use of solvent, to reach the solubility concentration (0.041 mg/1).
Test organisms
- Test organisms (species):
- Daphnia magna
- Details on test organisms:
- TEST ORGANISM
- Source: laboratory bred
- Age at study initiation (mean and range, SD): less than 24 hrs
Study design
- Test type:
- not specified
- Water media type:
- freshwater
- Total exposure duration:
- 48 h
Test conditions
- Test temperature:
- 20 degree C
- Salinity:
- 0.2 g/L NaHCO3
0.224 g/l CaCl2
0.026 g/L K2SO4 - Nominal and measured concentrations:
- nominal: 0, 12.5%, 25%, 50%, 75%, saturated (0.041 mg/L)
- Details on test conditions:
- TEST SYSTEM
- No. of organisms per vessel: 5
- No. of vessels per concentration (replicates): 4
- No. of vessels per control (replicates): 4
EFFECT PARAMETERS MEASURED (with observation intervals if applicable): immobilization
Results and discussion
Effect concentrationsopen allclose all
- Duration:
- 48 h
- Dose descriptor:
- NOEC
- Effect conc.:
- 0.041 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: > water solubility
- Duration:
- 48 h
- Dose descriptor:
- EC50
- Effect conc.:
- > 0.041 mg/L
- Nominal / measured:
- nominal
- Conc. based on:
- test mat.
- Basis for effect:
- mobility
- Remarks on result:
- other: > water solubility
- Details on results:
- No dose-response increase in the number of immobilized daphnids was seen. Also no significant increase in immobilization over controls was seen.
Any other information on results incl. tables
Immobilized daphnids at 48 hrs ¿ LAB
Concentration |
1 |
2 |
3 |
4 |
Control |
0 |
1 |
0 |
0 |
Saturated |
0 |
1 |
0 |
0 |
75% |
1 |
0 |
0 |
1 |
50% |
1 |
0 |
0 |
0 |
25% |
0 |
1 |
0 |
0 |
12.5% |
0 |
0 |
0 |
0 |
Applicant's summary and conclusion
- Validity criteria fulfilled:
- yes
- Conclusions:
- The 48-hr EC50 for daphnids was > 0.041 mg/L.
- Executive summary:
In cases where no data were available on the target substance, Benzene, C15 -16 -alkyl derivs., data were read across from a structurally related material (the test substance).
This study determined the short-term toxicity of linear alkyl benzenes to Daphnia magna. Daphnids were exposed to concentrations of 0, 12.5%, 25%, 50%, 75%, and 100% saturated test solution for 48 hrs. At the end of this period, the daphnids were observed for mobility. Though immobilized daphnids were seen at 4 test concentrations, there was no dose-related increase in immobilization, nor was the number of immobilized daphnids significantly increased over negative controls. The 48 -hr EC50 is >0.041 mg/l, this is greater than the water solubility for the test substance.
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