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EC number: 310-012-0 | CAS number: 102110-14-5 A complex combination of hydrocarbons obtained by distillation of steam-cracked naphtha. It consists predominantly of hydrocarbons having carbon numbers in the range of C3 through C6, predominantly C5.
- 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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Endpoint summary
Administrative data
Description of key information
There are no experimental data available to assess the environmental fate and pathways of streams of this category. The different endpoint values have been predicted using QSAR data for measured constituents of this category (at equal or above 0.1% w/w).
The indirect OH photolysis half-life was predicted using AOPWIN and ranged between 0.056 and 5.88 days, considering 12-h daylight. The peer-reviewed data, BIOHCwin, BIOWIN and Catalogic Kinetic 301F models predict that the majority of the constituents are expected to be not persistent. The predicted BCF values range from 6.9 to 552 L/kg ww, so no constituent has a BCF value of greater than 2000 L/kg ww. The predicted log Koc of measured constituents of these streams using KOCWIN and the MCI method range from 1.5 to 2.65. Most of the parent constituents have a log Koc of < 3, which indicates that they will not preferentially adsorb to sediment or soil particles and are therefore not considered to be persistent in sediments or soils. No constituent or metabolite is considered to be PBT/vPvB.
It is not technically feasible to perform simulation testing on ultimate degradation in sediment, surface water or soil on UVCBs. Current test procedures are not suitable for the characterisation of the degradation potential and potential metabolite formation of these substances due to their complex compositions. For this reason, the persistence assessment for this category was conducted by evaluating the individual constituents reported by the registrants (co- and lead) at a concentration of = 0.1% (w/w). The degradation potential in surface water indicated that the constituents would not be persistent if released to water. The category constituents’ degradation evaluation indicated that when physico-chemical properties (e.g., volatilization), abiotic and biotic processes are addressed collectively none of the constituents would persist in surface water. Therefore, simulation testing on ultimate degradation in surface water does not appear to be scientifically necessary. The adsorption/desorption potential evaluated for the category constituents using the log Koc screening criterion value of 3 indicates that the constituents do not have significant adsorption potential. Therefore, sediment and soil biodegradation simulation tests do not appear to be scientifically necessary as the category constituents degrade rapidly in the environment and there is very low potential for them to adsorb to sediment and soil particles.
It is also not feasible to perform adsorption/desorption tests in UVCB streams. For this reason, these endpoints have been adapted by using QSAR predictions.
Additional information
According to REACH Annex VIII, a hydrolysis study does not need to be conducted if the substance is readily biodegradable, or the substance is highly insoluble in water. However, evaluation of the molecular structure of the constituents indicates that this endpoint is scientifically not necessary for this category as none of the constituents contain any hydrolysable groups such as hydroxyl, sulfhydryl, carbonyl, carboxyl, amino, or phosphate groups. Therefore, conducting this type of study would not yield any useful information about the possible decomposition of constituents in the environment. Therefore, according to REACH Annex XI Section 1.2, the study can be waived because testing does not appear to be scientifically necessary based on the structures of the constituents.
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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