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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FAQ

Q1:Does it support customized products?

A1:Yes, it does. Formulations can be adjusted and customized production can be carried out according to customer's industry needs and performance parameters.


Q2:Can samples be provided?

A2:We support free sample delivery and testing services to meet customers' early testing needs.


Q3:Is the product quality stable? 

A3:With full-process quality inspection and control, there are minimal batch differences, and the purity and stability strictly meet the standards.


Q4:What is the shipping cycle?

A4:For regular inventory, we offer quick delivery. For customized orders, we arrange production according to demand and ensure timely delivery.

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