抄録
Qualities of commercial products including benzalkonium chloride (BC) were evaluated. Amounts of C12, C14, and C16 in the commercial BC products were 66.6 to 83.3%, 10.1 to 26.2 %, and 0.0 to 3.3%, respectively.BC with C12 and C14 alkyl group is known to adsorb to a cotton ball in the monomolecular adsorption manner following the Langmuir's adsorption isotherm. The adsorption rate of C14 was larger than that of C12.
These results suggested that the preparation containing a larger amount of C12 was suitable for the clinical use.
