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Gum Rosin Lumps, Rock Rosin, Chinese
Product Code: CROSIN
Rosin Lumps or rock rosin also known as colophony is a solid form (amber-brown color) of resin obtained from pines. Used in printing inks, varnishes, adhesives/glues, soap, paper sizing, soda, soldering fluxes, and sealing wax. Grade WW is pale yellow. Grade WG is yellow.
At room temperature rosin is brittle, but it melts at stove-top temperature. The product is a mixture of large pieces and small pieces including fine powder.
550 Lbs drums of rosin are also available at discounted price or free shipping in US.