...................................Chemical Composition (%) NH4VO3 Co Fe Cu Ni Al Mg Na Si Cl SO4 SO3 Testing.for dissolution of.ammoniacal liquor FAFP-1 99.9 0.002 0.002 0.002 0.002 0.01 0.001 0.005 0.01 0.005 FAFP-2 99.0 0.005 0.005 0.01 OK OK FAFP-3 98.0 0.01 0.05 0.02 OK OK