Registration Dossier
Registration Dossier
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EC number: 265-052-0 | CAS number: 64741-51-1 A complex combination of hydrocarbons produced by vacuum distillation of the residuum from atmospheric distillation of crude oil. It consists of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 and produces a finished oil with a viscosity of at least 100 SUS at 100°F (19cSt at 40°C). It contains a relatively large proportion of saturated aliphatic hydrocarbons.
Endpoint summary
Administrative data
Description of key information
Additional information
Key study data are available for relevant physicochemical endpoints for unrefined/acid treated oils. All substances in the category are hydrocarbon liquids with a variable viscosity (CONCAWE, 2009) at ambient temperature (20°C) and pressure (101.3 kPa). There is no guideline method available for this endpoint and data presented are based on visual observation, supported by data on melting point/pour point and viscosity. The pour point for chemicals in this category ranges from -35 to 75°C (Sequeira, 1994) while the boiling point ranges from 210 to 800°C (CONCAWE, 2010a; CONCAWE, 1997). The density ranges from 0.83 to 0.98 g/cm3 at 15°C (CONCAWE, 2010a; ExxonMobil Corporation) and the vapour pressure is <0.0058 Pa 20°C (US EPA, 2000).
Flash points for unrefined/acid treated oils are generally >98°C (CONCAWE, 2010a). Unrefined/acid treated oils are not considered to be flammable or explosive, and do not meet EU classification criteria for oxidising properties. The kinematic viscosity of substances in this category ranges from 2.5 to 30 mm²/s at 100°C and is >2 mm2/s at 40°C (CONCAWE, 2010a).
Based on information available on the properties of the substances that comprise the unrefined/acid treated oils category of chemicals, specific data are not presented for the following endpoints: partition co-efficient, water solubility, granulometry, surface tension, flammability, auto flammability, explosiveness, oxidising properties, stability in organic solvents, and dissociation constant. Appropriate waiving statements are provided to indicate why data for these REACH endpoints are not applicable. The physico-chemical data presented are considered representative for the substances included in the category unrefined/acid treated oils.
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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