Skin penetration by 2,4-diaminoanisole in the rat |
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Authors: | H Hofer E Hruby |
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Institution: | Institut für Biologie, Forschungszentrum Seibersdorf, A-2444 Seibersdorf, Austria |
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Abstract: | The absorption of 14C-labelled 2,4-diaminoanisole together with its reaction products was investigated after application to the skin of rats. 2,4-Diamino14C]anisole was applied as an ingredient of three different hair-dyeing formulations using procedures approximating to realistic conditions of use. Percutaneous absorption of the compound ranged from 0.26 to 1.1% of the administered dose, according to the formulation used. Elimination occurred mainly in the urine, with a smaller proportion in the faeces. Very small amounts were detected in the expired air. Complementary investigations involving subcutaneous or oral application of a solution of 2,4-diamino14C]anisole. 2HCl showed that radioactivity was rapidly eliminated in the urine and faeces. Biliary excretion was demonstrated after oral administration. |
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Keywords: | bis-MSB 2 4-DAA 2 4-diaminoanisole PPO 2 5-diphenyloxazole |
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