Appearance 

White crystal

Nitrogen

≥ 21

FREE  ACID (H2SO4)

≤0.05

RESIDUE AFTER IGNITION(AS SO4)  (%)

≤0.02

MANGANESE(MN) (%)

≤0.00005

IRON(FE)

≤0.005

HEAVY METALS(PB)

≤0.005

MOISTURE

≤0.10

Class                                 

 Fertilizer,inorganic salt                                                                                     

 Molecular formula  

 (NH4)2SO4

 Molecular weight

 132.13

Density

 1.769g/cm3

Decomposition temperature

 235 degrees centigrade

CAS NO

 7783-20-2

 H.S.code(customs code)

 31022100

 Inspect Standards

 GB535-1995