This is a kind of bitumen, which is provided during the process of oxidation of vacuum bottom (the bitumen production feedstock that derives from distillation tower residue in vacuum oil refineries) at bitumen production units. In a manner that its penetration point (kind of test to indicate the hardness of bitumen) becomes between 40-50.

 

Bitumen 40/50 Specification Test method
Specific gravity @25/25 C 1.01-1.06 D-70
Penetration @25 C 40/50 D-5
Softening point C 52/60 D-36
Ductility @25 C 100 min. D-113
Loss on heating (wt)% 0.2 max. D-6
Drop in penetration after heating % 20 max. D-6 & D-5
Flash point C 250 min. D-92
Solubility in CS2 (wt)% 99.5 min. D-4
Spot test negative *A.A.S.H.O.T.102

 

Usage: The main common usage of this product is to use in road making in tropical regions.