Magnesium Stearate Properties, Molecular Formula, Applications - WorldOfChemicals

Magnesium Stearate Properties

Magnesium Stearate

Magnesium Stearate Molecular Structure-Molecule Struture
Molecule Structure Image



Magnesium stearate is a salt containing two equivalents of stearate and one magnesium cation. It is often used as a diluent in the manufacture of medical tablets, capsules and powders. In this regard, the substance is also useful, because it has lubricating properties, preventing ingredients from sticking to manufacturing equipment during the compression of chemical powders into solid tablets; magnesium stearate is the most commonly used lubricant for tablets. It is also used as a food additive. Magnesium stearate is used to bind sugar in hard candies. It is also a common ingredient in baby formulas. It is manufactured from both animal and vegetable oils. Magnesium stearate is a major component of "bathtub rings". When produced by soap and hard water, magnesium stearate and calcium stearate both form a white solid insoluble in water, and are collectively known as "soap scum".

Chemical Properties

Appearance Light white powder
CAS Number 557-04-0
Density 1.028g/cm3
EINECS Number 209-150-3
HS Code 29157030
IUPAC Name Magnesium Octadecanoate
InChI 1S/2C18H36O2.Mg/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
Melting Point 88 °C
Molar Mass 591.27 g/mol
Molecular Formula C36H70MgO4
RTECS Number WI4390000
Solubility Insoluble
Synonyms Dibasicmagnesiumstearate;Dolomol;Magnesiumdistearate;Magnesiumstearatemedicinal;Stearatedemagnesium;Magnesium Stearate;Magnesium Octadecanoate