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Diss Factsheets
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EC number: 641-136-6 | CAS number: 1160164-88-4
- 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
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Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
Behenyl Bottoms is characterized as Alcohols, C18 -22, distillation residues. The REACH requirement in Annex X for studies on sediment organisms is waived based on technical difficulties associated with conducting studies due to its low solubility and the low to no toxicity in aquatic organisms. No reliable measured ecotoxicity data are available for sediment organisms.
Key value for chemical safety assessment
Additional information
Behenyl Bottoms is characterized as Alcohols, C18-22, distillation residues and the data requirement for sediment studies is waived. The REACH requirement in Column 2 of Annex X for studies on sediment organisms can be waived if long-term toxic effects to sediment organisms are unlikely. Testing for sediment organisms is waived based on technical testing difficulties associated with conducting studies, the lack of evidence for persistence and the absence of toxicity in aquatic organisms as presented in more detail below:
Study not technically feasible
The requirement to conduct long-term sediment studies for Alcohols, C18-22, distillation residues is waived due to anticipated technical difficulties in performing such a test. The water solubility of the substance is below the limit of quantification based on experimental evidence by Cartee and Schaefer (2009) where the limit of solubility was <1 mg/L. Further evidence provided in this dossier suggests that the maximum solubility for Alcohols, C18-22, distillation residues will be 0.007 mg/L, based on a conservative approach. The low solubility of the substance means that it is technically unfeasible to undertake a guideline (standard) study of long-term sediment ecotoxicity where the test substance would need to be maintained in solution for up to nine weeks (depending on test species) to be available for uptake by sediment organisms. Therefore, Behenyl Bottoms are considered to be unavailable for uptake by sediment organisms.
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Persistence
Results of the ready biodegradability tests with Behenyl Bottoms demonstrate that it is inherently biodegradable in fresh water (Schaefer & Matthews, 2010). The test substance biodegraded to an extent of 84.1% after 60 days and can be regarded as inherently biodegradable. According to ECHA Guidance, when the half-life is greater than 40 days in freshwater, the substance is considered to be persistent. Based on an average of three replicates and the steady rate of biodegradation, it can be assumed that the half-life of the substance is below the persistence (P) criterion when 50.3% of the substance biodegraded in a freshwater environment by day 37 of the test (Schaefer & Matthews, 2010). In accordance with ECHA Guidance (Chapter R.11, PBT Assessment), Behenyl Bottoms does not fulfil the PBT or vPvB criteria for Persistence (P).
Toxicity to Aquatic Organisms
Generally the short-term aquatic toxicity of Behenyl Bottoms (Alcohols, C18-22, distillation residues) is low based on experimental evidence presented in this dossier. The short-term toxicity of Behenyl Bottoms to invertebrates and fish was reported by Palmer et al., (2009) in OECD guideline and GLP compliant studies resulting in LC50s of >100 mg/L. In addition, long-term toxicity is considered to be below the limit of solubility (LoS) for alcohols > C15 in chain length based on evidence presented in the Long Chain Alcohols SIDS report (2006). It is unlikely that the substance would be available for uptake from the aquatic compartment. Therefore, long-term toxicity to sediment organisms is waived based on technical testing difficulties due to low solubility of the test substance and the absence of short-term toxicity to aquatic organisms at the limit of solubility.
In summary, the data requirement for studies for sediment organisms is waived on the evidence of testing technical difficulties, lack of persistence in the environment and the absence of toxicity in aquatic organisms.
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.
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