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.
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The 48 h EL50s were reported to range from 1.2 - 13 mg/L
Key value for chemical safety assessment
Additional information
A range of studies were available for the members of this Category based on the WAF. A study provided for stream 64742 -90 -1 byBrixham Environmental Laboratory Astrazeneca UK Ltd (2004) reported an EL50 of 13 mg/l. A study provided for stream 85117 -10 -8 by BASF (2007) reported an EL50 of 2.4 mg/l. ExxonMobill (2003) reported EL50's of 1.2 and 3.3 mg/l for the streams 68513 -69 -9 and 69013 -21 -4 and Elf Atochem (2000) stated an EL50 of >4.58 <9.83 mg/l for 64742 -90 -1. The data provided in these studies was considered reliable for use and will be read across to the other members of the Fuel Oils Category.
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