Fixed carbon, wt% 80-95
hydrogen, wt% 3.0-4.5
nitrogen, wt% 0.1 -0.5
sulphur, wt% 2 - 6%
volatile matter, wt% 5-15
moisture, wt% 0.5-10
ash, wt% 01-10
densitty, gcm3 1.21.6
aluminium, ppm 15-100
boron, ppm 0.1-15
calcium, ppm 25-500
chromium, ppm 5-50
cobalt, ppm 10-60
iron, ppm 50-5000
manganese, ppm 2-100
molybdenum, ppm 10-20
nickel, ppm 10-500
potassium, ppm 20-50
siliscon, ppm 50-600
sodium, ppm 40-70
titanium, ppm 2-60
vanadium, ppm 5-500.