Assay                             
Mo                  
Matter insoluble in water 
Cl                   
SO4           
PO4           
Pb              
PH                 
SiO         
Fe                   
As                   

99%min               
39%-39.5%
0.1%max
0.005%max
0.4%max
0.005%max
0.002%max
7.5-9.5
0.001%
0.005%max
0.001%max