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Magnesium Stearate is the magnesium salt of stearic acid, a fine white powder widely used as a lubricant, anti-caking agent, and stabilizer in pharmaceuticals, cosmetics, and food products.
Magnesium Stearate is known for its hydrophobic nature, low solubility in water, and excellent lubricating and flow-enhancing properties.
Magnesium Stearate is produced by the reaction of stearic acid with magnesium oxide or magnesium hydroxide.
Magnesium Stearate is an inert, non-toxic, and biodegradable compound suitable for use in both industrial and consumer applications.
CAS Number: 557-04-0
EC Number: 209-150-3
Molecular Formula: C36H70MgO4
Molecular Weight: 591.24 g/mol
Synonyms: Magnesium Distearate, Octadecanoic Acid Magnesium Salt, Magnesium Stearate Powder, Pharmaceutical Lubricant, Food-Grade Magnesium Stearate, Cosmetic-Grade Magnesium Stearate, Magnesium Soap, Stearic Acid Magnesium Salt, Magnesium Stearate, Octadecanoic Acid Magnesium Salt, Magnesium Distearate, Magnesium Dioctadecanoate, Stearic Acid Magnesium Salt, Magnesium Soap, Magnesium Stearic Acid Salt, Magnesium Stearate Powder, Magnesium Stearate Compound, Magnesium Stearate Material, Magnesium Stearate Product, Magnesium Stearate Substance, Magnesium Stearate Chemical, Magnesium Stearate Fine Powder, Magnesium Stearate Granules, Magnesium Stearate Pharmaceutical Grade, Magnesium Stearate Cosmetic Grade, Magnesium Stearate Food Grade, Magnesium Stearate Technical Grade, Magnesium Stearate Industrial Grade, Magnesium Stearate Laboratory Grade, Magnesium Stearate Research Grade, Magnesium Stearate Pure, Magnesium Stearate Extra Pure, Magnesium Stearate High Purity, Magnesium Stearate Refined, Magnesium Stearate Stabilized, Magnesium Stearate Certified, Magnesium Stearate Certified Standard, Magnesium Stearate Analytical Standard, Magnesium Stearate Laboratory Standard, Magnesium Stearate Certified Reagent, Magnesium Stearate Laboratory Reagent, Magnesium Stearate Test Reagent, Magnesium Stearate Assay, Magnesium Stearate Bulk Chemical, Magnesium Stearate Commercial Grade, Magnesium Stearate Raw Material, Magnesium Stearate Fine Chemical, Magnesium Stearate Specialty Chemical, Magnesium Stearate Active Ingredient, Magnesium Stearate Functional Ingredient, Magnesium Stearate Specialty Ingredient, Magnesium Stearate Functional Additive, Magnesium Stearate Specialty Additive, Magnesium Stearate Lubricant, Magnesium Stearate Tablet Lubricant, Magnesium Stearate Anticaking Agent, Magnesium Stearate Flow Agent, Magnesium Stearate Stabilizer, Magnesium Stearate Emulsifier, Magnesium Stearate Processing Aid, Magnesium Stearate Dispersing Agent, Magnesium Stearate Release Agent, Magnesium Stearate Binding Agent, Magnesium Stearate Thickening Agent, Magnesium Stearate Surface Conditioner, Magnesium Stearate Plastic Additive, Magnesium Stearate Polymer Additive, Magnesium Stearate Coating Additive, Magnesium Stearate Pharmaceutical Excipient
APPLICATIONS
Magnesium Stearate is used as a lubricant in pharmaceutical tablet and capsule formulations.
Magnesium Stearate reduces friction between powders and machinery during compression.
Magnesium Stearate ensures smooth tablet ejection and consistent tablet weight.
Magnesium Stearate acts as a flow agent in powdered drug formulations.
Magnesium Stearate prevents sticking, clumping, and segregation of ingredients.
Magnesium Stearate improves uniformity and dispersion in solid dosage forms.
Magnesium Stearate is used in nutraceuticals and dietary supplements.
Magnesium Stearate enhances capsule filling efficiency.
Magnesium Stearate provides a uniform coating for better swallowing comfort.
Magnesium Stearate is applied in cosmetic and personal care products.
Magnesium Stearate acts as a thickening, anti-caking, and texture-enhancing agent.
Magnesium Stearate provides a silky feel and matte finish in pressed powders and foundations.
Magnesium Stearate is used in creams, lotions, and deodorants.
Magnesium Stearate stabilizes emulsions and prevents ingredient separation.
Magnesium Stearate improves spreadability and smooth application.
Magnesium Stearate is incorporated into food products as an anti-caking agent (E470b).
Magnesium Stearate prevents clumping in powdered foods, spices, and flavor mixes.
Magnesium Stearate enhances flow and consistency in food processing.
Magnesium Stearate is used in plastic and rubber manufacturing.
Magnesium Stearate acts as a release agent and internal lubricant.
Magnesium Stearate improves mold release and reduces friction during extrusion.
Magnesium Stearate is employed in paint and coating formulations.
Magnesium Stearate enhances water repellency and pigment dispersion.
Magnesium Stearate improves surface smoothness and finish durability.
Magnesium Stearate is applied in agricultural and veterinary formulations.
Magnesium Stearate ensures uniform blending and flow in powdered pesticide carriers.
Magnesium Stearate stabilizes nutrient premixes and veterinary tablets.
Magnesium Stearate is used in printing inks and paper coatings.
Magnesium Stearate enhances ink adhesion and reduces dusting during printing.
Magnesium Stearate provides gloss control and surface smoothness.
Magnesium Stearate is used in pharmaceutical tablet manufacturing.
Magnesium Stearate functions as a lubricant to prevent sticking during compression.
Magnesium Stearate improves flowability of powder blends.
Magnesium Stearate is applied in capsule formulations.
Magnesium Stearate ensures uniform filling of capsules.
Magnesium Stearate reduces friction between active ingredients and capsule walls.
Magnesium Stearate is used in dietary supplements.
Magnesium Stearate improves powder processing and tablet formation.
Magnesium Stearate maintains consistent tablet weight and hardness.
Magnesium Stearate is incorporated in cosmetic powders.
Magnesium Stearate provides a smooth, silky texture.
Magnesium Stearate improves adherence of powders to the skin.
Magnesium Stearate is used in pressed makeup products.
Magnesium Stearate enhances binding of pigments in eyeshadows and blushes.
Magnesium Stearate improves glide and spreadability in color cosmetics.
Magnesium Stearate is applied in skincare creams and lotions.
Magnesium Stearate functions as an emulsifier and thickening agent.
Magnesium Stearate stabilizes oil-in-water emulsions.
Magnesium Stearate is used in personal care products.
Magnesium Stearate acts as an opacifying and anti-caking agent.
Magnesium Stearate enhances the tactile properties of formulations.
Magnesium Stearate is incorporated in nutraceutical formulations.
Magnesium Stearate provides uniform compression in supplement tablets.
Magnesium Stearate helps reduce moisture sensitivity of hygroscopic ingredients.
Magnesium Stearate is used in food processing.
Magnesium Stearate serves as an anti-caking and releasing agent.
Magnesium Stearate prevents ingredients from clumping during storage.
Magnesium Stearate is applied in plastic manufacturing.
Magnesium Stearate acts as a lubricant and release agent in polymer extrusion.
Magnesium Stearate reduces friction and improves mold release properties.
Magnesium Stearate is used in rubber processing.
Magnesium Stearate prevents sticking and agglomeration of rubber compounds.
Magnesium Stearate enhances processing efficiency during vulcanization.
Magnesium Stearate is incorporated in paints and coatings.
Magnesium Stearate improves pigment dispersion and surface smoothness.
Magnesium Stearate enhances water resistance and durability of coatings.
Magnesium Stearate is used in candle production.
Magnesium Stearate acts as a stabilizer and improves wax texture.
Magnesium Stearate enhances smoothness and appearance of candles.
Magnesium Stearate is applied in polishing formulations.
Magnesium Stearate imparts a matte finish to plastic and metal surfaces.
Magnesium Stearate helps in smooth application of polishing agents.
DESCRIPTION
Magnesium Stearate is a magnesium salt of stearic acid.
Magnesium Stearate is a fine, white, hydrophobic powder.
Magnesium Stearate is widely used as a lubricant, stabilizer, and flow agent.
Magnesium Stearate has the CAS number 557-04-0.
Magnesium Stearate has the EC number 209-150-3.
Magnesium Stearate has the molecular formula C36H70MgO4.
Magnesium Stearate has a molecular weight of 591.27 g/mol.
Magnesium Stearate is insoluble in water and slightly soluble in alcohol.
Magnesium Stearate has a melting point around 120–150°C.
Magnesium Stearate provides hydrophobic properties to formulations.
Magnesium Stearate improves powder flow and prevents adhesion to processing equipment.
Magnesium Stearate is compatible with most excipients used in pharmaceutical and cosmetic industries.
Magnesium Stearate is considered safe and non-toxic within approved concentrations.
Magnesium Stearate is compliant with pharmacopeial standards such as USP, EP, and JP.
Magnesium Stearate should be stored in tightly closed containers away from humidity and heat.
Magnesium Stearate is a fine, white, hydrophobic powder with a faint characteristic odor.
Magnesium Stearate is insoluble in water, slightly soluble in ethanol, and soluble in hot oils.
It has excellent lubricity, anti-caking, and stabilizing properties.
Magnesium Stearate is a common excipient in solid dosage pharmaceuticals.
Magnesium Stearate ensures efficient production and consistent mechanical performance.
Magnesium Stearate provides improved flow and reduced friction in powder processing.
Magnesium Stearate exhibits excellent thermal stability and is chemically inert.
Magnesium Stearate does not react with most formulation components under normal conditions.
It is biodegradable and environmentally safe when used within regulatory limits.
Magnesium Stearate is approved for use in food, cosmetics, and pharmaceuticals globally.
Magnesium Stearate conforms to pharmacopeia standards such as USP, BP, EP, and JP.
Magnesium Stearate is considered safe (GRAS) under normal usage concentrations.
PROPERTIES
Appearance: Fine white to off-white powder
Odor: Faint, characteristic fatty odor
Density: ~1.03 g/cm³
Melting Point: 130–150°C (decomposes)
Solubility: Insoluble in water; slightly soluble in alcohol and ether; soluble in warm oils
pH (1% dispersion): ~7.0–8.5
Moisture Content: ≤6%
Refractive Index: Not applicable (solid)
Bulk Density: 0.15–0.20 g/cm³
Stability: Stable under normal temperature and humidity
Storage Temperature: Store at 10–30°C in a dry, well-ventilated area
FIRST AID
Inhalation:
Move person to fresh air if dust is inhaled.
Seek medical attention if respiratory irritation occurs.
Skin Contact:
Wash with soap and water.
Generally non-irritant, but seek medical advice if irritation develops.
Eye Contact:
Rinse thoroughly with water for at least 15 minutes.
Seek medical attention if irritation persists.
Ingestion:
Rinse mouth with water.
Non-toxic in small quantities; seek medical help if discomfort occurs.
Note to Physicians:
Treat symptomatically.
No specific antidote required.
HANDLING AND STORAGE
Handling:
Avoid dust generation during handling.
Use appropriate protective equipment such as gloves and goggles when working with bulk quantities.
Ventilation:
Provide adequate local or general exhaust ventilation.
Avoidance:
Avoid contact with strong oxidizing agents and acids.
Prevent contamination with moisture or reactive chemicals.
Spill and Leak Procedures:
Avoid creating dust clouds.
Collect material mechanically and clean the area with water.
Storage:
Store in a tightly sealed container in a cool, dry, and well-ventilated area.
Protect from humidity, heat, and direct sunlight.
Maintain product integrity by keeping packaging closed when not in use.
