Registration Dossier
Registration Dossier
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EC number: 293-263-8 | CAS number: 91053-01-9 A complex combination of hydrocarbons obtained from distillation of the butadiene-free C4 fraction of a naphtha steam-cracking process. It consists predominantly of olefinic hydrocarbons having carbon numbers of C8, C12, C16 and C20 and boiling in the range of approximately 170°C to 185°C (338°F to 365°F).
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
The melting point of members of this category are <-20°C (C12 and C16). As melting point increases with carbon number C8 members of this category would also have melting point <-20°C.
Proprietary studies from Evonik (2008) on 97280-83-6 (no melting point found) and Aqura (2006) on tetrabutene (-58.5 °C) are available. These studies are non-GLP but follow standard guidelines and are considered reliable and suitable for use as the Key studies for this endpoint. Category members are therefore considered to have a melting point of less than-20 °C. No further studies are required in accordance wih column 2 of REACH Annex VII.
The mean of the melting point values for the category is -58.5°C and this has been used to complete the 'key value for chemical safety assessment'.
Key value for chemical safety assessment
- Melting / freezing point at 101 325 Pa:
- -58.5 °C
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.
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