Definition
Clarified oils (petroleum), catalytic cracked is a complex combination of hydrocarbons produced as the residual fraction from distillation of the products from a catalytic cracking process. It consists of hydrocarbons having carbon numbers predominantly greater than C20 and boiling above approximately 350.degree.C (662.degree.F). This stream is likely to contain 5 wt. % or more of 4- to 6-membered condensed ring aromatic hydrocarbons.
Toxics Screening Level
The initial threshold screening level (ITSL) for clarified oils (petroleum), catalytic cracked, also known as clarified slurry oil (CSO) is 12 μg/m3 based on an annual averaging time.
