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EC number: 927-632-8 | CAS number: -
The purpose of these studies was to assess the percutaneous absorption and cutaneous disposition of topically applied (25 uL/5 cm2) neat Jet-A, JP-8, and JP-8(100) jet fuels by monitoring the absorptive flux of the marker components 14C naphthalene and 4H dodecane simultaneously applied non-occluded to isolated perfused porcine skin flaps (IPPSF) (a = 4). Absorption of 14C hexadecane was estimated from JP-8 fuel. Absorption and disposition of naphthalene and dodecane were also monitored using a nonvolatile JP-8 fraction reflecting exposure to residual fuel that might occur 24 h after a jet fuel spill. In all studies, perfusate, stratum corneum, and skin concentrations were measured over 5 h. Naphthalene absorption had a clear peak absorptive flux at less than 1 h, while dodecane and hexadecane had prolonged, albeit significantly lower, absorption flux profiles. Within JP-8, the rank order of absorption for all marker components was (mean +/- SEM; % dose) naphthalene (1.17 +/- 0.07)> dodecane (0.63 +/- 0.04) > hexadecane (0.18 +/- 0.08). The area under the curve (AUC) was determined to be (mean +/- SEM; % dose-h/mL): naphthalene (0.0199 +/- 0.0020)> dodecane (0.0107 +/- 0.0009) > hexadecane (0.0017 +/- 0.0003). In contrast, deposition within dosed skin showed the reverse pattern.
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