Petroleum is refined by fractional distillation. Further fractional distillation of its products gives a no. of refined products given below.
 

    

        

            

            
S.No.
            
            

            
Fraction
            
            

            
Boiling range
            
            

            
Comp.
            
            

            
Uses
            
        
        

            

            
1.
            
            

            
Gaseous   hydrocarbon
            
            

            
Below   20oC
            
            

            
C1–C4
            
            

            
Fuel   for domestic use
            
        
        

            

            
2.
            
            

            
Petroleum   ether
            
            

            
20–60oC
            
            

            
C5–C6
            
            

            
Solvent
            
        
        

            

            
3.
            
            

            
Benzene
            
            

            
70–90oC
            
            

            
C6–C7
            
            

            
Solvent
            
        
        

            

            
4.
            
            

            
Ligroin
            
            

            
80–120oC
            
            

            
C6–C8
            
            

            
Solvent
            
        
        

            

            
5.
            
            

            
Gasoline
            
            

            
70–120oC
            
            

            
C6–C11
            
            

            
Fuel   for motors
            
        
        

            

            
6.
            
            

            
Kerosene
            
            

            
200–275oC
            
            

            
C12–C16
            
            

            
For   lightening stoves, fuel, oil gas
            
        
        

            

            
7.
            
            

            
Gas   oil or Diesel oil or Heavy oil
            
            

            
275oC   to above
            
            

            
C15–C18
            
            

            
Diesel   Engine oil, furnace oil
            
        
        

            

            
8.
            
            

            
Lubricant   oil
            
            

            
Non   volatile liquids
            
            

            
C16–C20
            
            

            
Lubricant
            
        
        

            

            
9.
            
            

            
Petroleum   jellies
            
            

            
Non   volatile liquids
            
            

            
C18–C22
            
            

            
Medicine   preparation
            
        
        

            

            
10.
            
            

            
Parrafin   wax
            
            

            
Non–volatile   liquids
            
            

            
C18–C22
            
            

            
Wax   industry
            
        
        

            

            
11.
            
            

            
Petroleum   cake & asphalt
            
            

            
Non–volatile   liquids
            
            

            
C30–C40
            
            

            
Carbon   electrode, road manufacture