Rosin is a solid, transparent yellow vegetable resin, residue from the distillation of turpentines (conifer resins), also known on the market as Greek pitch.
Rosin comes in the form of a transparent resinous mass, more or less amber, dissolves easily in alcohol and ether and is used in the manufacture of paints, soaps, adhesives, caulking pitch, lubricants, inks, sealing wax, for insulation electrical, as a deoxidizer in tin soldering and in the textile industry to obtain non-crumple fabrics, linoleum.
It is also used to obtain friction of the bow on the strings of bowed instruments.
Rosin is brittle and crumbles easily at room temperature, but melts at around 100-120°C and is highly flammable. Rosin dissolves in alcohol, benzene, chloroform and ether. It is also soluble in spirit of turpentine and a substitute for turpentine.
The size and color of the crystals may vary as this is a natural product.