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EC number: 211-121-5 | CAS number: 629-97-0
- 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
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- docosane
- Type of composition:
- boundary composition of the substance
- State / form:
- solid: bulk
- Reference substance:
- docosane
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Persistence (P) Assessment
A substance is not considered to be persistent if it can be demonstrated that it has potential to degrade (via photolysis, hydrolysis and/or biodegradation).
There are no data available for docosane. Data is available for GTL Base Oil Distillates and this data is used for read-across to docosane. The results from the ready biodegradability studies for GTL Base Oil Distillates ranged from 11-67% after 28 days. The main factors influencing the results include the guideline/method followed, the dosing method and the viscosity/composition of the test substance. In general, the biodegradability of the substances decrease as the viscosity (and hence carbon chain length/degree of branching) increases. In fact, the lowest viscosity substances almost meet the criteria for ready biodegradability. Overall GTL Base Oil Distillates is not considered to be readily biodegradable but is expected to be inherently biodegradable.
Therefore, docosane does not meet the Persistent (P) or very Persistent (vP) criteria.
Bioaccumulation (B) Assessment
Docosane has a log Kow of >6 and therefore can be classified as potentially bioaccumulative (B). It is not possible to draw a definitive conclusion on B for docosane due to a lack of further test data. However, because it is not classfied as P or vP, then no further testing is required.
Toxicity (T) Assessment
Human Health Hazards Assessment (T)
Carcinogenicity: There are no carcinogenicity data available for docosane. Data for the read-across substances C18-C50 branched, cyclic and linear hydrocarbons – Distillates (CAS# 848301-69-9) and C8-C26 branched and linear hydrocarbons – Distillates (CAS# 848301-67-7) do not warrant classification for carcinogenicity under Dir 67/548/EEC or GHS/CLP.
Mutagenicity: There are no mutagenicity data available for docosane. Data for the read-across substances C18-C50 branched, cyclic and linear hydrocarbons – Distillates (CAS# 848301-69-9) and C8-C26 branched and linear hydrocarbons – Distillates (CAS# 848301-67-7) classification for mutagenicity under Dir 67/548/EEC or GHS/CLP.
Reproductive Toxicity: There are no reproductive toxicity data available for docosane. Data for the read-across substances C18-C50 branched, cyclic and linear hydrocarbons – Distillates (CAS# 848301-69-9) and C8-C26 branched and linear hydrocarbons – Distillates (CAS# 848301-67-7) show there is no evidence that docosane causes reproductive or developmental toxicity and do not warrant classification under Dir 67/548/EEC or GHS/CLP.
Environmental Toxicity Assessment (T)
There are no data available on the acute ecotoxicity of docosane. Data is available for GTL Base Oil Distillates and this data is used for read across to docosane. The effect of GTL Base Oil Distillates on the respiration of activated sewage sludge micro-organisms gave a 3-Hour EC50 of greater than 1000 mg/l. The No Observed Effect Concentration (NOEC) after 3 hours exposure was 1000 mg/l.
GTL Base Oil Distillates were not identified as P or vP, but are potentially B, therefore no further assessment on T is needed. Using the read-across data for GTL Base Oil Distillates, docosane can be classified as not T.
Conclusion of PBT/vPvB assessment
There is no data available for docosane therefore this PBT/vPVB assessment has been made based on read-across data. This available data showed that docosane is not classified as P or vP, but is potentially B. The read-across data also do not meet the criteria for T. Therefore, docosane is not classified as PBT or vP or vB.
Reference
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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