| abstract |
Disclosed is a rubber compounding oil which contains an extract (A) and a lubricant base oil (B). The extract (A) has an aniline point of 40-90 DEG C, a %CA of 25-45 and a %CN of 5-20 as determined according to ASTM D3238, a nitrogen fraction of not less than 0.01% by mass, a pour point of not more than +30 DEG C, a benzo(a)pylene content of not more than 1 ppm by mass, a total content of specific aromatic compounds of not more than 10 ppm by mass, and a kinematic viscosity at 40 DEG C of not less than 650 mm2/s. The lubricant base oil (B) has a pour point of not more than -10 DEG C, an aniline point of not less than 70 DEG C, a %CA of 3-20 and a %CN of 15-35 as determined according to ASTM D3238, a nitrogen fraction of not more than 0.01% by mass, a 90% point in GC distillation of not less than 500 DEG C, a flash point of not less than 250 DEG C, a benzo(a)pylene content of not more than 1 ppm by mass, and a total content of specific aromatic compounds of not more than 10 ppm by mass. |