Rosin is a kind of oil tree rosin in the pine family, the main component is C19H29COOH. Divided into "fat rosin", "wood rosin" and "floating rosin" 3 kinds. It should be used in industry, flux, paper making, string Musical Instruments, etc.
Rosin is sold as a semi-transparent solid ranging in colour from yellow to black and has a faint odour of pine. The commercial grades range from A (the darkest) to K (yellow red), M (yellow brown) and N (deep yellow), through to superior WG ("Window Glass",yellow) and WW ("Water White", slight yellow). Rosin is brittle and easily crumbled at room temperature, but melts at around 100-120 C and is highly flammable.
Rosin is a kind of oil tree rosin in the pine family, the main component is C19H29COOH. Divided into "fat rosin", "wood rosin" and "floating rosin" 3 kinds. It should be used in industry, flux, paper making, string Musical Instruments, etc.
Gum rosin is an import chemica and it mainly used in soap industry, paper industry, paint and coatings industry, ink industry, adhesives, rubber industry, food industrial, electric industry and so on.
Quality Specifications X WW WG N M K
Color Slightly Yellow PaleYellow Yellow DeepYellow Yellow Brown YellowRed
Correspond to the standard glass color piece of rosin
Appearance Transparent Solid
Softening point, (¡æ)(by ball and ring method),min. 76 75 74
Acid No. (mgkoh/g), min. 166 165 164
Unsaponifiable material (%), max. 5 5 5
Alcohol Insoluble material (%), max. 0.03 0.03 0.04
Ash (%) max. 0.02 0.03 0.04
225 KG net, 231 KG gross packed in new galvanized iron drums
