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Diss Factsheets
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EC number: 954-225-2 | 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
Link to relevant study record(s)
- Endpoint:
- biodegradation in water: ready biodegradability
- Type of information:
- read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- key study
- Study period:
- 22-Aug-1994 to 23-Sep-1994
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: This study was given a reliability of 1, because it followed an OECD standard guideline, which describes a procedure specifically designed to evaluate this endpoint, and the results were reviewed for reliability and assessed as valid.
- Justification for type of information:
- The justification for read across is provided as an attachment in IUCLID Section 13.
- Reason / purpose for cross-reference:
- read-across source
- Parameter:
- % degradation (O2 consumption)
- Value:
- 15.4
- Sampling time:
- 4 d
- Parameter:
- % degradation (O2 consumption)
- Value:
- 50.4
- Sampling time:
- 11 d
- Key result
- Parameter:
- % degradation (O2 consumption)
- Value:
- 60.7
- St. dev.:
- 2.77
- Sampling time:
- 28 d
- Details on results:
- Test material was readily biodegradable, but failed the 10-day window. The biodegradation half-life was <2 weeks. On day 28, 60.7% degradation of the test substance was observed. 10% biodegradation was achieved on approximately day 4, 50% on approximately day 11, and 60% on day 27. By day 3, >60% biodegradation of the positive control was observed. No excursions from the protocol were noted.
The study was extended to Day 31, where the test substance achieved a mean percent biodegradation of 61.5%. - Results with reference substance:
- Sodium benzoate, the positive control, achieved 99.0% degradation after 14 days, and therefore this test may be considered valid. On Day 28 of the study, the mean percent degradation of the positive control was 88.7%.
- Validity criteria fulfilled:
- yes
- Interpretation of results:
- readily biodegradable, but failing 10-day window
- Conclusions:
- Hydrocarbons, C14 -C18, n-alkanes, isoalkanes, cyclics, aromatics (2 -30%), a multi-component substance, biodegraded to an extent of 61% after 28 days. The data support characterizing the test substance as rapidly biodegradable, readily biodegradable, not expected to persist in the environment under aerobic conditions. Although it did not meet the 10 -day window requirement, it is characterized as readily biodegradable because the criteria is not applied to multi-component substances when assessing their ready biodegradability.
- Executive summary:
This data is being read across from the source study that tested Hydrocarbons, C14-C18, n-alkanes, isoalkanes, cyclics, aromatics (2-30%) based on analogue read across.
Hydrocarbons, C14 -C18, n-alkanes, isoalkanes, cyclics, aromatics (2 -30%), a multi-component substance, biodegraded to an extent of 61% after 28 days. The data support characterizing the test substance as rapidly biodegradable, readily biodegradable, not expected to persist in the environment under aerobic conditions. Although it did not meet the 10 -day window requirement, it is characterized as readily biodegradable because the criteria is not applied to multi-component substances when assessing their ready biodegradability.
Reference
Biodegradation was based on oxygen consumption and the theoretical oxygen demand of the test material as calculated using results of an elemental analysis of the test material.
|
% Degradation* |
Mean % Degradation |
Sample |
(day 28) |
(day 28) |
Test Material |
66.8, 56.2, 59.1 |
60.7 |
Na Benzoate |
89.9, 87.5 |
88.7 |
* replicate data
Description of key information
There is no data available for Hydrocarbons, C12-C18, isoalkanes, cyclics, 2-30% aromatics. However, key data is available for the structural analogue, Hydrocarbons, C14-C18, n-alkanes, isoalkanes, cyclics, aromatics (2-30%) and presented in the dossier. This data is read across to Hydrocarbons, C12-C18, isoalkanes, cyclics, 2-30% aromatics based on analogue read across and a discussion and report on the read across strategy is provided as an attachment in IUCLID Section 13.
Data read-across from the source substance showed that it biodegraded to an extent of 61% after 28 days in an OECD 301F study. The data support characterizing the source substance substance (Hydrocarbons, C14-C18, n-alkanes, isoalkanes, cyclics, aromatics (2-30%)) as rapidly biodegradable, readily biodegradable, not expected to persist in the environment under aerobic conditions. Although it did not meet the 10 -day window requirement, it is characterized as readily biodegradable because the criteria is not applied to multi-component substances when assessing their ready biodegradability.
Key value for chemical safety assessment
Additional information
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.