Magnesium Stearate - Materials / Alfa Chemistry

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Magnesium Stearate

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Catalog Number

ACMA00014343

Product Name

Magnesium Stearate

Category

Glass Additives

Description

Magnesium stearate, with chemical formula C36H70MgO4 and molecular weight of 591.24, is an organic compound. It is a white, sand-free fine powder with a greasy feeling in contact with the skin. Insoluble in water, ethanol or ether, it is mainly used as lubricant, anti-sticking agent and glidant. It is especially suitable for the granulation of oil and extract medicines, and the granules made have good fluidity and compressibility. Used as a glidant in direct compression. It can also be used as a filter aid, a clarifying agent and a foaming agent, as well as a suspending agent and thickening agent for liquid preparations.

IUPAC Name

magnesium;octadecanoate

Molecular Weight

591.2g/mol

Molecular Formula

C36H70MgO4

Canonical SMILES

CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Mg+2]

InChI

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

InChI Key

HQKMJHAJHXVSDF-UHFFFAOYSA-L

Melting Point

200ºC

Flash Point

162.4ºC

Density

1.028 g/cm³

Solubility

insoluble in water, ethanol

Appearance

White, sand-free fine powder

Application

Magnesium stearate serves a crucial purpose in various industries, primarily as a lubricant and anti-adherent for the efficient manufacture of medical tablets, capsules, and powders. This fine white powder, which is a salt containing stearate and magnesium, prevents ingredients from sticking to equipment during production, enhancing the manufacturing process. Its lubricating properties make it the most widely used lubricant in tablet formulation, helping to ensure consistent quality without compromising the bioavailability of active ingredients. Apart from pharmaceuticals, magnesium stearate is also employed as a food additive and excipient, identified as E470b, and is used in products such as hard candy and baby formulas. While its manufacturing uses present a minor dust explosion hazard, this is generally insignificant outside production facilities. With a history of safe consumption and use recognized by expert agencies, magnesium stearate is a versatile component in cosmetics, foods, and pharmaceuticals, contributing functionality and safety to a wide array of products.

Color/Form

LUMPS;Fine, bulky, white powder;Soft, white, light powder

Complexity

196

Covalently-Bonded Unit Count

EC Number

209-150-3

Exact Mass

590.512452g/mol

Formal Charge

Heavy Atom Count

ICSC Number

1403

MeSH Entry Terms

aluminum monostearate;aluminum tristearate;ammonium stearate;calcium stearate;magnesium stearate;octadecanoic acid;sodium stearate;stearic acid;zinc stearate

Monoisotopic Mass

590.512452g/mol

Odor

Odorless;Faint, characteristic odor

Other Experimental

Decomposed by dilute acids;MP: 132 °C /Technical/

Packaging

25 kg

Rotatable Bond Count

RTECS Number

WI4390000

UNII