Magnesium Sulphate

Magnesium Sulphate Heptahydrate:
Magnesium Sulphate Heptahydrate (Epsom Salt) provides a soluble source of Magnesium and sulfur for plants. Magnesium is a secondary micronutrient. Magnesium is the central atom of the chlorophyll molecule and is therefore important in photosynthesis. Magnesium is important in protein synthesis and enzyme processes, and it helps plants to absorb and use phosphorous and nitrogen

Sulfur is a component of amino acids and proteins. It is important in plant metabolic functions and enzyme processes. Sulfur containing components help regulate ion transport across bio-membranes and are important in tolerance of plants to salt, drought and heat. Sulfur containing components help to detoxify heavy metals in plants. A shortage of sulfur inhibits protein synthesis and decreases chlorophyll content in leaves.

Magnesium Sulphate Heptahydrate can be applied dry to the soil, dissolved and used as a foliar spray or dissolved in hydroponic nutrient solutions. It can be incorporated into fertilizer blends.


Purity 99.98 %
Purity as MgSo4 7H20 >99% to 99.5%
Magnesium Sulphate as MgSo4 >48.5%
Magnesium Oxide as Mg0 >16% to 17%
Magnesium as Mg >9.6%
PH of 5% aqueous Solution 7+0.5
Sulphates of K and Ca <0.1% each
Chlorides of K and Ca <0.1% each
Chlorides of CI <300 ppm
Heavy metals as Pb <2 ppm
Arsenic as As2 03 <2 ppm
Iron as Fe <20 ppm
Calcium as Ca <300 ppm
Octyldecylamin 0.01% (100ppm)