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EC number: 265-062-5
CAS number: 64741-60-2
A complex combination of hydrocarbons produced by the distillation of products from a catalytic cracking process. It consists of hydrocarbons having carbon numbers predominantly in the range of C11 through C30 and boiling in the range of approximately 205°C to 450°C (401°F to 842°F). It contains a relatively large proportion of tricyclic aromatic hydrocarbons.
The photo irritation index for FCC light cycle oil is 1.1 and therefore considered to be a slight photo irritant under the conditions of this study.
In a dermal photo
irritation study five female New Zealand White rabbits were exposed to
0.3 mL of undiluted FCC light cycle oil on two intact areas of the skin
for one hour. Concurrent positive (1% 8-MOP) and untreated controls were
also applied to two intact areas. After test article or positive control
exposure, half of the sites were exposed to UV A light for 4.4 hours and
were observed at time points of 30 minutes, 24, 48, and 72 hours after
UV A exposure. Irritation and photo irritation were scored using the
Draize scoring method. 1%
8-MOP induced an appropriate positive response. It had a photo
irritation index of 5.6 and is considered a moderate photo irritant,
under the conditions of this study. The photo irritation index for FCC
light cycle oil is 1.1 and therefore considered to be a slight photo
irritant under the conditions of this study.
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