“…Toxicological studies on C16 alkyl pyridinium chloride have been described [ 16,28,33,41 ] particularly because of its use as a dermal and oral disinfectant. A direct comparison with the C14-lw alkylbenzene sulfonic acid is not available, but sodium C1i alkylbenzene sulfonate [9,34,35,38] appears to be even less toxic than cetyl pyridinium chloride [28). The effects of surface-active agents on the skin are very dependent on pH and purity of the product and, when the pH is near that of skin (pH 5-6) [4], they can be much safer than soaps when used all day in industry or in shampoos [3].…”