 |
| Chemical formula and percentage of commonly used chemical fertilizers |
Chemical formula and percentage of commonly used chemical fertilizers
Nitrogenous fertilizers
|
Chemical name
|
Chemical formula
|
%N
|
|
Anhydrous ammonia
|
Liquid NH3
|
82.0
|
|
Urea
|
CO(NH2)2
|
46.0
|
|
Ammonium nitrate
|
NH4NO3
|
33.0
|
|
Ammonium chloride
|
NH4Cl
|
26.0
|
|
Di ammonium phosphate
|
(NH4)2HPO4
|
21.0
|
|
Ammonium sulphate
|
(NH4)2SO4
|
20.5
|
|
Sodium nitrate
|
NaNO3
|
16.0
|
|
Calcium nitrate
|
CaNO3
|
15.5
|
|
Potassium nitrate
|
KNO3
|
13.0
|
|
Mono ammonium phosphate
|
NH4H2PO4
|
11.0
|
Phosphatic fertilizers
|
Chemical name
|
Chemical formula
|
%P2O5
|
%P
|
|
Triple super phosphate(TSP)
|
Ca(H2PO4)2
|
48
|
21.12
|
|
Phosphoric acid
|
H3PO4
|
55
|
24.2
|
|
Di ammonium phosphate
|
(NH4)2HPO4
|
54
|
23.76
|
|
Mono ammonium phosphate
|
NH4H2PO4
|
48
|
21.12
|
|
Super phosphate or single super phosphate (SSP)
|
Ca(H2PO4)2
|
16
|
7.04
|
Potassic fertilizers
|
Chemical name
|
Chemical formula
|
%K2O
|
%K
|
|
Muriate of potash
|
KCl
|
60
|
49.8
|
|
Potassium sulphate
|
K2SO4
|
50
|
41.5
|
|
Potassium nitrate
|
KNO3
|
44
|
36.5
|
Calcium fertilizers
|
Chemical name
|
Chemical formula
|
%Ca
|
|
Gypsum
|
CaSO4.2H2O
|
22
|
|
Basic slug
|
(CaO)5.P2O5.SiO2
|
29
|
|
Superphosphate
|
Ca(H2PO4)2.CaSO4
|
20
|
|
Calcium chloride
|
CaCl2
|
36
|
|
Dolomite lime
|
CaCO3.MgCO3
|
17
|
|
Hydrated lime
|
Ca(OH)2
|
50
|
Magnesium fertilizers
|
Chemical name
|
Chemical formula
|
%Mg
|
|
Magnesium oxide
|
MgO
|
45.0
|
|
Magnesium sulphate
|
Mg SO4.7H2O
|
10.5
|
|
Dolomite
|
CaCO3.MgCO3
|
12.0
|
|
Kieserite
|
K2SO4.2Mg SO4
|
18.2
|
|
Magnesium ammonium phosphate
|
MgNH4PO4.H2O
|
14.8
|
Sulphur fertilizers
|
Chemical name
|
Chemical formula
|
%S
|
|
Aluminium sulphate
|
Al2(SO)3
|
14.4
|
|
Sodium sulphate
|
Na2SO4.H2O
|
22
|
|
Zinc sulphate
|
ZnSO4.H2O
|
18
|
|
Calcium sulphate
|
CaSO4.2H2O
|
18
|
|
Magnesium sulphate
|
MgSO4.H2O
|
13
|
Zinc fertilizers
|
Chemical name
|
Chemical formula
|
%Zn
|
|
Zinc sulphate
|
ZnSO4.H2O
|
36
|
|
Zinc oxide
|
ZnO
|
78
|
Boron fertilizers
|
Chemical name
|
Chemical formula
|
%B
|
|
Boric acid
|
H3BO3
|
17
|
|
Borax
|
Na2B4O7.10 H2O
|
10.5
|
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