Ferrous Sulphate
Ferrous Sulphate is a free flowing product ideal for correcting iron
deficiencies in horticulture.
Typical Analysis
Grades: (a) Ferrous Sulphate, monohydrate (FeSO 4.H2O)
(b)
Ferrous Sulphate, Heptahydrate (FeSO 4.7H2O)
Other Names: Iron Sulphate, Sulphate of Iron
| Chemical Formula |
FeSO4.H2O |
FeSO4.7H2O |
| |
|
|
| Purity |
90% min. |
90% min. |
| Iron (Fe) |
29.5 – 30% |
19.2 – 19.8% |
| Sulphur (S) |
17% min. |
11% min. |
| *Magnesium (Mg) |
0.9% (typical) |
0.7 – 1.0% |
| *Titanium (T) |
0.4% (typical) |
0.3% max |
| *Manganese (Mn) |
0.08% (typical) |
0.07% max. |
| *Zinc (Zn) |
100 ppm max |
30 ppm
max.. |
| *Arsenic (As) |
25 ppm max. |
0.1 ppm
max. |
| *Chromium (Cr) |
20 ppm max. |
10 ppm
max. |
| *Copper (Cu) |
2 ppm max. |
1 ppm
max. |
| *Lead (Pb) |
2 ppm max. |
5 ppm
max. |
| *Mercury (Hg) |
0.05 ppm max. |
0.1 ppm
max. |
| *Calcium (Cd) |
0.03 ppm max. |
0.1 ppm
max. |
| Insolubles in water |
0.3% max. |
0.6% max. |
| pH (10% solution) |
1.7 – 2.3 |
3.2 – 3.8 |
| Apparent density |
1.2 – 1.5 g/cm³ |
~0.8 g/cm³ |
* The manufacturing process of these products generates minute
quantities of impurities. The maximum possible levels in these products
are as listed.
Packaging
25kg polyethylene bags
Appearance
Monohydrate- brown-grey very fine free-flowing granules
Heptahydrate- pale green fine free-flowing granules
Importance of Iron in plant growth
- Iron is a micronutrient essential for chlorophyll formation and enzymatic
reactions in plant metabolism.
Iron is also important in plant respiration, and photosynthesis.
Deficiency symptoms include:
- Stunted and abnormal growth of plants, leaf deformities, and early
dropping of leaves and fruit in some severe cases.
- Chlorosis of new leaves due to inhibition of chlorophyll formation
resulting in decreased yield. In severe cases of iron deficiency, leaves
grow totally yellow in colour.
Benefits of using Ferrous Sulphate
- Ferrous Sulphate Heptahydrate is a free flowing, soluble product with
a low level of heavy metals, ideal for foliar spraying in iron deficient
areas.
- Ferrous Sulphate can be used to control moss in lawns in addition
to having a fertilising effect.
- Ferrous Sulphate can be used as a trace element addition to fertilisers
and also as an animal feed additive.
- Ferrous Sulphate can be used for pH adjustment of soils and potting
mixes, and as an acidifying agent in alkaline soils.
For application rates, seek professional agronomic advice.
Conditions of Sale
• All goods supplied are made from high grade materials. However
as no control can be exercised over storage, handling, mixing and use,
liability is limited to replacement of faulty goods only.
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