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nature : Rosin commonly known as cooked or cooked incense. Transparent glassy brittle material. Pale yellow to black. A special smell. Do not dissolve in water. Soluble ethanol, ethyl ether, acetone, benzene, carbon disulfide, turpentine, oil and alkaline solution. Major components of rosin and turpentine anhydride acid is not saturated compounds, greater activity. For soap, paper, paint, paint, rubber and other industries. Varieties are gum rosin, wood rosin and tall oil rosin so. Rosin quality, in line with color, acidity, softening point, and set transparency. More generally shallow color, the better the quality; Rosin acid content greater, the greater the acidity, the higher softening point. By distillation to turpentine pine resin derived.
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