Tar / Coal Tar

• Produced by destructive distillation of organic materials . 
• Coal tar run at a lower temperature than asphalt 
• Resistant to petroleum - based solvents 
• Has a low bitumen content generally has high specific gravity and v iscosities , and good adhesive properties . 
• Oxidizes more easily . 
• Ordinary coal tar is suitable for many of the applications of bitumen due to it has the advantages of superior adhesion in damp situation . 
• Example : Tars for road purpose , damp -proof couse .