Magnesium Stearate

Magnesium Stearate

CAS No.: 557-04-0
Molecular Formula: C36H70MgO4
Molecular Weight: 591.24
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product description
Magnesium stearate, also called octa decanoic acid, magnesium salt, is a white substance, powder which becomes solid at room temperature. It has the chemical formula Mg(C18H35O2)2. It is a salt containing two equivalents of stearate (the anion of stearic acid) and one magnesium cation (Mg2+).


Chemical Properties
PropertyValue

Melting point

200 °C (lit.)

Density

1.028g/cm3

Storage temp.

Inert atmosphere,Room Temperature

Solubility

Alcohol: insoluble

Form

Fine Powder

Color

White

PH

7 (H2O) (slurry)

Odor

wh. soft oily powd., tasteless, odorless

Water Solubility

Insoluble

Merck

14,5690

BRN

3919702

Exposure limits

ACGIH: TWA 10 mg/m3; TWA 3 mg/m3

Stability

Stable. Incompatible with strong oxidizing agents.

InChIKey

DRJIJXNWSSRTTE-UHFFFAOYSA-M

LogP

8.216 (est)

CAS DataBase Reference

557-04-0(CAS DataBase Reference)

EPA Substance Registry System

Magnesium stearate (557-04-0)


Safety Information

PropertyValue

Hazard Codes

Xi

Risk Statements

36/37/38

Safety Statements

26-37/39

WGK Germany

-

RTECS

WI4390000

TSCA

Yes

HS Code

29157030

Hazardous Substances Data

557-04-0(Hazardous Substances Data)

Toxicity

LD50 orally in Rabbit: > 2000 mg/kg


Product Usage

Magnesium stearate is a fine white powder widely recognized as the most commonly used "flow agent" and lubricant in the pharmaceutical and nutraceutical industries. Its primary application is in the manufacturing of tablets and capsules, where it prevents ingredients from sticking to the production machinery and ensures uniform consistency in every dose. In the food industry, it serves as an anti-caking agent and emulsifier, helping to maintain the texture and stability of confectioneries and powdered supplements. Beyond consumables, it has significant industrial applications in the plastics and rubber sectors as a mold release agent and heat stabilizer. Its hydrophobic properties also make it an effective water-repellent additive in the production of specialized coatings and construction materials, enhancing their durability and moisture resistance.

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Delivery Time

Inventory 2-3 working days New manufacturing 7-10 working days

Mode of Transportation
1. By Air, fast but expensive.
2. By Sea, usual and economy.
3. By Train, suit for middle Asia countries.
4. By Express, suit for small package.
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A1: Yes, our company holds a number of internationally recognized core certifications. All production and operation activities strictly follow international environmental, safety and quality standards, and each batch of products is accompanied by a compliance test report to meet the chemical industry requirements in different regions around the world.


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