Chemical Examination Of Naples Soap
A. Faiszt has submitted this celebrated shaving soap to analysis.
He states that it is made by saponifying mutton fat with lime, and then separating the fatty acids from the soap thus formed, by means of a mineral acid.
These fatty acids are afterwards combined with ordinary caustic potash to produce the Naples soap.
He found that 100 parts of this soap contained ( Parts ).
Fatty acids, = 57.14
Potash combined with the fatty acids, = 10.39
Sulphate of potash, chloride of potassium, with a trace of carbonate of potash, = 4.22
Silica, etc., = 0.46
Water, = 27.68
———
99.89
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