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Diss Factsheets
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EC number: 500-001-0 | CAS number: 7756-94-7
- 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 fish
Administrative data
Link to relevant study record(s)
Description of key information
The 96 hour LC50 for fish was calculated to be 1.19 mg/L for a category representative C8 structure. For C12 and C16 structures no effects were predicted at saturation – which supports the experimental data for the C16 stream.
Toxicity data was available for tetrabutene (Infracor (Speikamp), 2002) which reported the 96 hour LC50 to be >1.55 mg/L. Although this substance is not identified as a category member it would clearly fall within the category domain, being a tetramer of butylene with a predominant carbon number of C16. Due to the low solubility of the test substance, a WAF method was used to prepare the stock solution. 1 g of the test item was added to the test media and stirred for 18 hours. This solution was used as the highest exposure concentration and was diluted to provide the lower test concentrations. Samples were taken to confirm the exposure concentrations at the time of test media exchange (new and old media sampled). The geometric mean concentration at the highest loading rate was 1.55 mg/L. This was the highest exposure concentration that could be produced, and no mortality was observed at this concentration. The 96 hour LC50 was therefore determined to be > 1.55 mg/L.This value have been used in the PBT assessment of this category.
In the absence of experimental data for the other streams in this category this single result is supported by data estimated using an established QSAR (ECOSAR, model in EPISuite V4.0). The 96 hour LC50 for fish was calculated to be 1.19 mg/L for a category representative C8 structure. For C12 and C16 structures no effects were predicted at saturation – which supports the experimental data for the C16 stream.
Key value for chemical safety assessment
Fresh water fish
Fresh water fish
- Effect concentration:
- 1.19 mg/L
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.