Bitumen Specification: nioc bitumen grade 60/70 value test method Specific gravity25c 1.01/1.06 d-70 astm Penetration25c 60/70 d-5 astm Softening point25c 49/56 d-36astm Ductility25 100min d-113astm Loss on heating % wt 0.2 max d-6 Drop in penetration after heating % 20max d-5&d-6 Flashpoint c 250min d-92 astm Solubility in cs2 % wt 99.5min d-4astm Spot test negative a.A.S.H.O.T.102 Specification: nioc bitumen grade 85/100 value test method Specific gravity25c 1.01/1.05 d-70 astm Penetration25c 85/100 d-5 astm Softening point25c 45/52 d-36astm Ductility25 100min d-113astm Loss on heating % wt| 0.5 max d-6 Drop in penetration after heating % 20max d-5&d-6 Flashpoint c 225min d-92 astm Solubility in cs2 % wt| 99.5min d-4astm Organic matter insoluble in cs2 wt % 0.2 Spot test negative a.A.S.H.O.T.102 A.A.S.H.O. (american association of highway official) Drum