A dark brown to black hydrocarbon obtained by the distillation of cokeoven tar; softening point near 150°F (65°C); used in built-up roofing as a waterproofing agent.
A dark brown to black hydrocarbon obtained by the distillation of cokeoven tar; softening point near 150°F (65°C); used in built-up roofing as a waterproofing agent.