Registration Dossier
Registration Dossier
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EC number: 265-193-8 | CAS number: 64742-90-1 A complex combination of hydrocarbons obtained as the residual fraction from the distillation of the products of a steam cracking process (including steam cracking to produce ethylene). It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly greater than C14 and boiling above approximately 260°C (500°F). This stream is likely to contain 5 wt. % or more of 4- to 6-membered condensed ring aromatic hydrocarbons.
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
Studies were available for several of the streams in this Category The reported 72 hr ErL50 range was 2.1-12.2 mg/l.
Key value for chemical safety assessment
Additional information
Data was available for the streams 64742 -90 -1, 68513 -69 -9, 85117 -10 -8 and 69013 -21 -4 from Brixham Environmental Laboratory (2004), Exxon (2003) BASF (2007) and ExxonMobil (2003, 2004). The ErL50 values reported ranged from 2.1 - 12.2 mg/l. These studies are considered reliable for assessment and so data will be read across to other members of the category.
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