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EC number: 265-150-3
CAS number: 64742-48-9
A complex combination of hydrocarbons obtained by treating a petroleum fraction with hydrogen in the presence of a catalyst. It consists of hydrocarbons having carbon numbers predominantly in the range of C6 through C13 and boiling in the range of approximately 65°C to 230°C (149°F to 446°F).
The aquatic 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 15.41 mg/L.
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