and perhaps any chemists among our readership could enlighten us about just what rosin is beside the heavy fractions left after extracting the volatiles from pine resin.

Wood rosin is extracted from pine stumps. Tall oil is obtained as a ... These constituents include 90% resin acids and 10% neutral matter. Of the resin acids, about 90% are isomeric with abietic ...

Rosin bags seen on the pitching mounds in both Major League Baseball and NPB contain a powdered mixture of magnesium carbonate and pine resin. While watching a major league game on TV, Yamaguchi ...