NH4HCO3:                                     99.2-100.50%

CHLORIDE:                                     0.001%max

SULPHATE:                                     0.007%max

ASH :                                                0.008%max

ARSENIC(As):                                 2mg/kg max

HEAVY metaL (Pb):                     2mg/kg max

NON-VOLATILE MATTER            0.05%   max                                       

The product complies with the National Standard of GB1888-2014