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Home > Encyclopedia > Magnesium stearate

Magnesium stearate

Magnesium stearate structure

Magnesium stearate 

structure
  • CAS No:

    557-04-0

  • Formula:

    C18H36O2.1/2Mg

  • Chemical Name:

    Magnesium stearate

  • Synonyms:

    Octadecanoic acid,magnesium salt (2:1);Magnesium stearate;Stearic acid,magnesium salt;Octadecanoic acid,magnesium salt;Dibasic magnesium stearate;Magnesium distearate;SM;Petrac MG 20NF;SM 1000;Magnesium octadecanoate;Daiwax M;Pharma;SM-P;NS-M;NS-M (salt);Synpro Magnesium Stearate 90;Synpro 90;NP 1500;Magnesium stearic acid;EM 100;EM 100 (salt);EM 144;EM 112;EM 612;Nissan Electol MM 2;HyQual;Electol MM 2;Mg-St;Daiwax SMO;Palmstar 325BP/EP;SPX 100F;M 5GN;Magnesium Stearate G;Aurabrite MA 76;Parteck LUB-MST;PETS 120P;AFCO-Chem MGS;Kemilub EM-F-V;JPM 100;Liga MF 2V;SMO;VE;SM-PG;MGS;Songstab SM 310;BS 5818;SAK-MS-P;Parteck LUB;Ligastar MG 700;SM 520;Magnesium stearate GR;S 0238;Nissan Elector MM-2;Ligamed MF-2-V;Magnesium Stearate GP;magnesium stearate;Ligamed;SM 310;E 470B;IADMGSTCM 700;NJ 029;YZM 32C;YZM 75C;Ligamed MF 2V;Hyqual 5712;212132-26-8

  • Categories:

    Cosmetic Ingredient  >  Cosmetic Colorant

Description

It appears as bright white soft powder with the industrial products containing a small amount of oleic acid and 7% magnesium oxide and is odorless and tasteless. It is slightly soluble in water and soluble in hot ethanol. soft, light white powder(s); odorless, tasteless; nonflammable used in baby dusting powder(s) and as tablet lubricant [HAW93] [MER06] Magnesium stearate is a very fine, light white, precipitated or milled, impalpable powder of low bulk density, having a faint odor of stearic


DryPowder; DryPowder, PelletsLargeCrystals|WHITE POWDER.


Magnesium distearate is a magnesium salt.

Magnesium stearate Basic Attributes

632.31900

630.45700

209-150-3

70097M6I30

1403

DTXSID2027208

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

29157030

Characteristics

52.60000

12.50830

White powder

1.028 g/cm3

88 °C

359.4ºC at 760mmHg

162.4ºC

1.45 (25ºC)

H2O: Insoluble

Store at RT.

LD50 orally in Rabbit: > 2000 mg/kg

Odorless|Faint, characteristic odor

Tasteless

Decomposed by dilute acids

Dust explosion possible if in powder or granular form, mixed with air. If dry, it can be charged electrostatically by swirling, pneumatic transport, pouring, etc.

Safety Information

NONH for all modes of transport

-

R36/37/38

S26-S37/39

WI4390000

Xi

Stable. Incompatible with strong oxidizing agents.

P264, P305+P351+P338, P332+P313, P33, P313

H316

SRP: At the time of review, criteria for land treatment or burial (sanitary landfill) disposal practices are subject to significant revision. Prior to implementing land disposal of waste residue (including waste sludge), consult with environmental regulatory agencies for guidance on acceptable disposal practices.

Substance added directly to human food affirmed as generally recognized as safe (GRAS).|An ingredient whose use in food or food packaging is subject to a prior sanction or approval within the meaning of section 201(s)(4) of the Act is exempt from classification as a food additive. ... Substances classified as stabilizers, when migrating from food-packaging material shall include: magnesium stearate.

Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Finely dispersed particles form explosive mixtures in air.

|Warning|H315 (39.3%): Causes skin irritation [Warning Skin corrosion/irritation]|P261, P264, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, and P501|Aggregated GHS information provided by 541 companies from 18 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.|H316: Causes mild skin irritation [Warning Skin corrosion/irritation]|P264, P305+P351+P338, P332+P313, and P337+P313

In case of fire in the surroundings, use appropriate extinguishing media.

Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance.

A nuisance-causing concentration of airborne particles can be reached quickly when dispersed.

NO open flames. Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.

PREVENT DISPERSION OF DUST!

Use local exhaust.

Protective gloves.

Wear safety spectacles.

Drug Information

contains small amounts of the oleate and 7% magnesium oxide. /technical grade/

Fresh air, rest.


First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

/HUMAN EXPOSURE STUDIES/ ...DEATHS HAVE BEEN CAUSED BY ACCIDENTAL INHALATION OF THE /BABY DUSTING/ POWDER, /CONTAINING MAGNESIUM STEARATE/.|/HUMAN EXPOSURE STUDIES/ Slightly toxic by ingestion.

aluminum monostearate

The substance can be absorbed into the body by inhalation.

Cough.

Magnesium stearate Use and Manufacturing

Methods of Manufacturing

REACTION OF SODIUM STEARATE WITH MAGNESIUM SULFATE

Uses

Magnesium Stearate is the magnesium salt of stearic acid which functions as a lubricant, binder, emulsifier, and anticaking agent. it is a white powder that is insoluble in water. it is used as a lubricant or die release in tableting pressed candies and is also used in sugar- less gum and mints.
Magnesium stearate is often used as a anti-adherent 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. Studies have shown that magnesium stearate may affect the release time of the active ingredients in tablets, etc., but not that it reduces the overall bioavailability of those ingredients. As a food additive or pharmaceutical excipient, its E number is E470b.
Magnesium stearate is also used to bind sugar in hard candies like mints, and is a common ingredient in baby formulas. In pure powder form, the substance can be a dust explosion hazard, although this issue is effectively insignificant beyond the manufacturing plants using it.
Magnesium stearate is manufactured from both animal and vegetable oils. Some nutritional supplements specify that the magnesium stearate used is sourced from vegetables.
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.".


Anti-adhesive agents


Building/construction materials not covered elsewhere

Production

1,000,000 - 10,000,000 lb|(1972) 2.16X10+9 GRAMS|(1975) 1.79X10+9 GRAMS|(1984) 1.08X10+10 g

MAGNESIUM STEARATE /IS/ COMPD OF MAGNESIUM WITH MIXTURE OF SOLID ORG ACIDS OBTAINED FROM FATS, & CONSISTS CHIEFLY OF VARIABLE PROPORTIONS OF MAGNESIUM STEARATE & MAGNESIUM PALMITATE. IT CONTAINS EQUIVALENT OF 6.8-8.0% OF MAGNESIUM OXIDE (40.30).|GRADES: TECHNICAL, USP FCC.|A TYPICAL DRY COMPRESSED ANTIPERSPIRANT STICK/CONTAINS/0.25 wt% MAGNESIUM STEARATE

All other chemical product and preparation manufacturing|Octadecanoic acid, magnesium salt (2:1): ACTIVE|The more important dusting powders include ... magnesium stearate, NF ...|Microspheres containing the mucoadhesive polymer chitosan hydrochloride, with matrix polymer Eudragit RS, pipemidic acid as a model drug and agglomeration preventing agent magnesium stearate were prepared by the solvent evaporation method. The amount of magnesium stearate was varied and the following methods were used for microsphere evaluation: sieve analysis, drug content and dissolution determination, scanning electron microscopy, x-ray diffractometry, DSC and FTIR spectroscopy. The results showed that average particle size decreased with increasing amount of magnesium stearate used for microsphere preparation. This is probably a consequence of stabilization of the emulsion droplets with magnesium stearate. Higher pipemidic acid content in the microspheres was observed in larger particle size fractions and when higher amounts of magnesium stearate were used. It was also found that these two parameters significantly influenced the dissolution rate. The important reason for the differences in drug content in microspheres of different particle sizes is the diffusion of pipemidic acid from the acetone droplets in liquid paraffin during the preparation procedure. The physical state of pipemidic acid changed from crystalline to mostly amorphous with its incorporation in microspheres, as shown by x-ray diffractometry and differential scanning calorimetry. No differences were observed in the physical state of pipemidic acid and in microsphere shape and surface between different size fractions of microspheres, prepared with different amounts of magnesium stearate. Additionally, no correlation between the physical state of the drug in different microspheres and their biopharmaceutical properties was found.

EPA Safer Chemical Functional Use Classes -> Surfactants|Safer Chemical Classes -> Green half-circle - The chemical is expected to be of low concern|Food Additives -> ANTICAKING_AGENT; EMULSIFIER; -> JECFA Functional Classes|Cosmetics -> Anticaking; Bulking; Cosmetic colorant; Moisturising

Food Additives -> ANTICAKING_AGENT; EMULSIFIER;

Computed Properties

Molecular Weight:591.2
Hydrogen Bond Acceptor Count:4
Rotatable Bond Count:30
Exact Mass:590.5124524
Monoisotopic Mass:590.5124524
Topological Polar Surface Area:80.3
Heavy Atom Count:41
Complexity:196
Covalently-Bonded Unit Count:3
Compound Is Canonicalized:Yes

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