Shree Hari Group of Companies offers Highly Viscous Bitumen in Black Color. Shree Hari Group of Companies supplies ferrous and non - ferrous metal scraps, petrochemicals, cement and cement clinker, coal and paper scrap. Highly Viscous Bitumen in Black Color is a mixture of organic liquids that are sticky and entirely soluble in carbon disulfide. Highly Viscous Bitumen in Black Color is composed primarily of highly condensed polycyclic aromatic hydrocarbons. Bitumen is the residual [bottom] fraction obtained by fractional distillation of crude oil. It is the heaviest fraction and the one with the highest boiling point, boiling at 525 degrees Celsius.