Magnesium Sulfate Heptahydrate

Chemical Name: Magnesium sulfate heptahydrate / Epsom salt
CAS Number: 10034-99-8
Molecular Formula: MgSO₄·7H₂O
Molecular Weight: 246.47 g/mol
EINECS Number: 231-298-2
Properties & Applications & PackagesInquiry
Technical Datas

Items

Standards

(Common Grade)

Standards

(FCC VII)

Content(MgSO4), w/% ≥

99

99.5

Heavy Metal(as Pb),mg/kg ≤

10

-

Lead(Pb),mg/kg ≤

2

4

Selenium(Se),mg/kg ≤

30

30

PH (50g/L,25)

5.5-7.5

-

Chloride(as Cl),w/% ≤

0.03

-

Arsenic(As),mg/kg ≤

3

-

Iron(Fe),mg/kg ≤

20

-

Loss on Ignition (Heptahydrate),w/%

40.0-52.0

40.0-52.0

Loss on Ignition(Dried),w/%

22.0-32.0

22.0-28.0

Main Applications and Uses
1. Agriculture
-Fertilizer Additive: Corrects magnesium deficiencies in crops; provides essential magnesium and sulfur nutrients for chlorophyll production and protein synthesis
-Foliar Application: Used as a source of magnesium in foliar feeding for rapid nutrient absorption
-Soil Health: Improves drought resistance and can increase crop yields (e.g., 7.94% increase in rice grain output)
-Market Growth: The agricultural market for magnesium sulfate heptahydrate was valued at $1.2 billion in 2023, projected to reach $2.1 billion by 2032
2. Pharmaceutical and Medical
-Osmotic Laxative: Commonly known as Epsom salt; used to relieve occasional constipation by drawing water into the intestines
-Anticonvulsant: Intravenous administration for treating pre-eclampsia and eclampsia in pregnant women
-Electrolyte Replenisher: Used to treat magnesium deficiency and maintain electrolyte balance
-External Use: Dissolved in baths for muscle relaxation and soothing soreness
3. Food and Beverage Industry
-Brewing Salt: Used in beer production to adjust water chemistry and enhance flavor
-Tofu Coagulant: Functions as a coagulant in tofu manufacturing
-Nutrient Supplement: FCC-grade material used as a nutrient and dietary supplement; meets Food Chemicals Codex requirements
-Processing Aid: Acts as a flavor enhancer and processing aid in various food applications 


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