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 same time broad-minded and tolerant of the opinions of others. His only son, Heinrich Rosin, is professor of medicine at the University of Berlin. Another Heinrich Rosin, professor in the law department of the University of Freiburg, is his nephew. David Rosin David Rosin (May 27, 1823 – December 31, 1894) was a German Jewish theologian from Rosenberg, Silesia. Having received his early instruction from his father, who was a teacher in his native town, he attended the yeshibah of Kempen, of Myslowitz (under David Deutsch), and of Prague (under Rapoport); but, wishing to receive a regular school education, he