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EC number: 265-084-5
CAS number: 64741-82-8
A complex combination of hydrocarbons from the distillation of the products from a thermal cracking process. It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly in the range of C10 through C22 and boiling in the range of approximately 160°C to 370°C (320°F to 698°F).
toxicity was estimated using the PETROTOX computer model, which combines
a partitioning model (used to calculate the aqueous concentration of
hydrocarbon components as a function of substance loading) with the
Target Lipid Model (used to calculate acute and chronic toxicity of
non-polar narcotic chemicals). PETROTOX computes toxicity based on the
summation of the aqueous-phase concentrations of hydrocarbon block(s)
that represent a petroleum substance and membrane-water partition
coefficients (KMW) that describe the partitioning of the
hydrocarbons between the water and organism. The estimated 40-hr EL50
value forTetrahymena pyriformis, one of the most sensitive
microorganism species, is 1.954 mg/L
and the estimated NOEL is 0.241 mg/L.
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