Iron(Fe) 0 ~0.0001%<\/p>
Chloride(Cl) 0 ~0.0005%<\/p>
Sulfate(SO4) 0 ~0.002%<\/p>
Heavy metal(As Pb) 0 ~0.0005<\/p>
Content(As NH3) 30 ~36%<\/p>
Appearance Colorless crystalline translucent hard block or powder<\/p>
<\/p>