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Inorganic chemicals

Fespol® - Iron (II) sulphate

PKWiU: 20.13.41.0
CN: 2833

Grupa Azoty Police

Iron (II) sulphate is produced by Police in several trade forms, whose basic parameters are given in the following table.

  • FESPOL 17 – Iron (II) sulphate, heptahydrate, centrifuged;
  • FESPOL 20 – Iron (II) sulphate, heptahydrate, dried;
  • FESPOL 28 – Iron (II) sulphate, monohydrate, dried.

CharacteristicsSee more

 

Parametr

 

FESPOL® 17

FESPOL® 20

FESPOL® 28

Chemical formula 
 
 FeSO4 * 7H2O
FeSO4 * 7H2O
FeSO4 * H2
EINECS No. 
 
231-753-5
231-753-5
231-753-5
Characteristics 
 
heptahydrate centrifuged
heptahydrate dried
monohydrate dried
Form 
 
crystalline powder
crystalline powder
crystalline powder
Colour 
 
green 
light green 
light cream 
Iron(II) content,
at least, %m/m
 
17
19.5
28.2
Iron (II) content calculated per FeSO4*7H2O, at least, %m/m
 
84.6
97
-
Iron (II) content calculated per FeSO4*H2O, at least, %m/m  
 
-
-
85.8
Content of parts insoluble in water, maximum, %m/m
 
0.5
0.5
0.5
Content of free acids calculated per H2SO4,maximum, % 
 
0.5
0.5
0.3
Bulk density loose, g/cm3
 
0.8+/-0.1
0.8+/-0.1
0.8+/-0.1
Bulk density condensed, g/cm3
 
1.10+/-0.1
1.05+/-0.1
1.15+/-0.1
Detailed requirements for individual products are set out in Company Standard ZN-ZChP-338 FESPOL SIARCZAN ŻELAZA(II).
Applications and useSee more

The main application of iron (II) sulphate is in the production of ferric coagulants used for water and sewage treatment. It has also found applications in the manufacture of ferric pigments and certain types of cement, as well as wood finishing. Iron (II) sulphate can also be added to fertilizers and animal feed.

 
 

 

 

FESPOL® 17

FESPOL® 20

FESPOL® 28

Flocculation of suspended matters in wastewaters (sewage) 
 
 
 
 
Chromium reduction in sewage 
 
 
x
 
Phosphate elimination in sewage 
 
 
x
 
Sulphide precipitation in sewage 
 
 
 
Decolouration of sewage 
 
 
x
 
Sludge thickening 
 
 
x
 
Treatment of potable water 
 
 
x
 
Treatment of industrial water
 
 
x
 
Reduction of chromium in cement 
 
x
x
Manufacturing of iron pigments 
 
x
 
 
Animal feed additive
 
 
x
x
Fertiliser additive 
 
x
Prevention of plant chlorosis 
 
x
x
Peat additive 
 
x
x
x - highly recommended
● - recommended
 
Quality – Environment – SafetySee more

The Integrated Management System in POLICE Chemical Company S.A. includes the Quality Management System ISO 9001:2000 (confirmed with the TÜV NORD POLSKA certificate has been functioning in POLICE Chemical Company S.A. since 23 January 2004), the Environmental Management System ISO 14001:2004 and the Occupational Health and Safety Management System PN-N 18001:2004 (compliant with the International Standard OHSAS 18001). In case of iron (II) sulphate, due to the possibility of its application as addition for feed, the Hazard Analysis and Critical Control Points system (HACCP) and the Food Safety Management System according to EN ISO 22000:2005 have been implemented.

Packing, storage and transportationSee more

Iron (II) sulphate is transported by flexible truck containers with a capacity between 500 kg and 1000 kg or in bulk (by truck cisterns, covered road transport or railway transport). Flexible containers with FESPOL should be stored in clean and dry storage buildings. Products supplied in bulk should be stored in silos (FESPOL 20 and FESPOL 28)or in clean and dry storage buildings (FESPOL 17).

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Waldemar Dąbrowski
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Marcin Dorsz
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