Description

Rosin yellow to red and yellow transparent solid, softening point *0 ~ *0 ℃, specific gravity 1.**0 ~ 1.**5, solution heat: *5.8kcal/kg, heat capacity: 0.*4kcal/kg · ℃, thermal conductivity: 0.*1kcal / m · h · ℃, volume resistivity: 5 × ***6Ωcm, flash point: **6 ℃. Rosin also has a crystalline property, prone to crystallization in acetone and other organic solvents have tendency to crystallize, the critical crystallization temperature of about **0 ℃, rosin crystallization temperature **0 ~ **5 ℃, and difficult to saponification. In addition, rosin also has optical activity, rosin specific rotation value of control in between 0 ~ *5 ° (optimum point *7 °) is no crystallization of the rosin and the lowest tendency to