Natural rock rosin from pine trees of Brazil is excellent for production of rosin powder, baseball rosin bags, rosin stick and many other grip improving products. Also used in printing inks, varnishes, adhesives/glues, soap, paper sizing, soda, soldering fluxes, and sealing wax.
The entire 55-lb bag of this product is often one large solid chunk, but it can easily be crushed to smaller pieces for packaging or production. Image shows a clean chunk immediately after braking a larger chunk.
Acid Value: 155 - 170 KOH/g
Color: Pale yellow/ Amber to Brown