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EC number: 295-458-3
CAS number: 92045-76-6
A complex combination of hydrocarbons obtained from residual oils by solvent crystallisation and treated with hydrogen in the presence of a catalyst. It consists predominantly of saturated straight and branched chain hydrocarbons having carbon numbers predominantly greater than C25.
Key study data are available for each relevant physicochemical endpoint for paraffin and hydrocarbon waxes. All substances in the category are solid 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 (CONCAWE, 2010a). The melting point for chemicals in this category ranges from 43 to 95°C (CONCAWE, 1999a). The boiling point for paraffin and hydrocarbon waxes ranges from 300°C to 800°C (CONCAWE, 1997, 2010a; EWF, 1990) and the density ranges from 0.79 to 0.94 g/cm3 at 15°C (CONCAWE, 1999a; 2010a). The vapour pressure is negligible at 20°C and ranges from 0 to 20 Pa at 80°C (EWF, 1990).
Flash points for paraffin and hydrocarbon waxes range from 160°C to 300°C (CONCAWE, 2010a; EWF, 1990). Paraffin and hydrocarbon waxes 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 3 to 30 mm2/s at 100°C (CONCAWE, 1999a).
Based on information available on the properties of the substances that comprise the paraffin and hydrocarbon waxes 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 paraffin and hydrocarbon waxes.
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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