Rosin - Wikipedia
Rosin is an ingredient in printing inks, photocopying and laser printing paper, varnishes, adhesives (glues), soap, paper sizing, soda, soldering fluxes, and sealing wax.. Rosin can be used as a glazing agent in medicines and chewing gum.It is denoted by E number E915. A related glycerol ester (E445) can be used as an emulsifier in soft drinks.In pharmaceuticals, rosin forms an ingredient in ...