Rosin taken when melting it. It is soluble in alcohol, ether, benzene and chloroform. Rosin consists mainly of abietic acid, and combines with caustic alkalis to form salts (rosinates or pinates) that are known as rosin soaps. In addition to its extensive use in soap making, rosin is largely employed in making varnishes (including fine violin varnishes), sealing wax and various adhesives. It is also used for preparing shoemakers' wax, for pitching lager beer casks, and numerous other purposes such as providing backing surfaces to tin ware, copper ware, or even silver and gold vessels when embossing or engraving them (its
David Rosin a Hebrew introduction, Breslau, 1881. An essay of Rosin's on the philosophy of Abraham ibn Ezra was edited after his death by his devoted pupil David Kaufmann and published in the ""Monatsschrift"" (vols. xlii.-xliii.), to which magazine Rosin occasionally contributed. While not a voluminous writer and original thinker, Rosin did his literary work with an exemplary accuracy of detail and in perfect sympathy with his subject. To his numerous disciples he was a kind friend and adviser. In his religious attitude he was strictly conservative, a true disciple of Michael Sachs (whose admirer he was); and he was at the