APPEARANCE : Red Crystalline Powder
INSOLUBLE IN DILUTE HYDROCHLORIC ACID : MAX 0. 03%
ASSAY : Min 99 % ( HgO )
RESIDUE AFTER REDUCTION : MAX 0. 025%
CHLORIDE ( Cl ) : MAX 0. 025%
SULPHATE ( SO4 ) : MAX 0.015%
NITROGEN COMPOUNDS ( AS N ) : MAX 0. 005 %
IRON ( Fe ) : MAX 0. 005%