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Stearic Acid CAS 57-11-4 and Magnesium Stearate CAS 557-04-0 and Calcium Stearate CAS 1592-23-0

Stearic Acid CAS 57-11-4 and Magnesium Stearate CAS 557-04-0 and Calcium Stearate CAS 1592-23-0

Stearic Acid CAS 57-11-4 and Magnesium Stearate CAS 557-04-0 and Calcium Stearate CAS 1592-23-0 -------------------------------------------------------- Stearic Acid Description: COA of Stearic Acid Product Name: Stearic Acid -------------------------------------------------------- Certificate...

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Stearic Acid CAS 57-11-4 and Magnesium Stearate CAS 557-04-0 and Calcium Stearate CAS 1592-23-0

Stearic Acid+Magnesium Stearate +Calcium Stearate.jpg

Product   :

Stearic Acid

Magnesium Stearate

Calcium Stearate


Acidum stearicum

Acid Stearic

Magnesii stearas,

Stearate Magnesium

Calcii stearas,

Stearate Calcium


White   powder or flake crystal.

A   white, very fine, light powder, greasy to the touch

A   fine, white or almost white, crystalline powder

CAS   Number:





20Kg/Bag,   25Kg/Bag or Drum


Industrial   Grade, Pharmaceutical Grade


USP   and NF, BP, USP

Key Words: Stearic Acid, Magnesium Stearate, Calcium Stearate


Description of Stearic acid:

Stearic acid is also also called Octadecanoic Acid.

Stearic acid is nature’s most commonly seen long-chain fatty acids. It is derived from vegetable fats.

Stearic acid naturally presents in many foods in far greater quantities than in supplements. Stearic acid is also the immediate precursor of oleic acid, an important fatty acid found in healthy olive oil. Now, most Stearic acid are produced by synthetise.

With chemical formula CH3CH216COOH, Stearic acid is a white or slightly yellow waxy solid material. Solubility: Stearic acid is insoluble in water, but soluble In ethanol and ethyl ether, chlorofom, toluene, carbon disulfide, etc. Stearic acid has excellent lubricating effect and anti-chromatographic properties.

Application: Stearic acid can be used as the vulcanization activity agent of natural rubber, synthetic rubber and rubber latex. And Stearic acid may also work as plasticizer and chemical stabilizer. Meanwhile, Stearic acid is extensively used in the production of carbon paper, Nax crayons, candles, etc.


Uses and applications of Stearic acid:

Release Aid and Additive for Adhesives

1.Food and Beverage: Stearic acid works as a Hardener in Candies and also as a Mold Release for Hard/Pressed Candies.

2.Lubricants and Greases: Stearic acid functions as Mold Release Lubricant for Sintering, Pressing Ceramic Powders and Latex Foam; Thickener in Greases.

3.Metal Working Fluids: Stearic acid is used in Metal Polishes and Buffing Compounds as a Binder

4.Oil and Gas: Viscosity Modifier for Oil Extraction

5.Personal Care: Stearic acid works as an Emulsifier/Emulsion Stabilizer, Thickener and Surfactant in Creams, Lotions, Detergents, Soaps, Shaving Cream, Body Washes and Hair Care Products. Functions as a Hardener in Candles, Soaps, Crayons and Pastels

6.Pharmaceutical and Nutraceutical: Stearic acid can be used as Emulsifying Agent, Solubilizing Agent, Tablet and Capsule Lubricant and Mold Release Agent.

7.Plastics: Stearic acid works as Internal and External Lubricant and Viscosity Depressant in PVC Processing

8.Soaps and Detergents: Stearic acid acts as an Anionic, Nonionic, and Cationic Surfactant, Base Stock for Liquid and Dry Soaps and Detergents

9.Rubber industry: Stearic acid can be Activator, Accelerator, Internal Lubricant, Mold Release Agent and Surface Lubricant in Rubber Processing.

10.Surfactants and Esters: Stearic Acid works as a Surfactant as Noted in Many of its Applications

11.Textiles: Stearic acid can be used to StrengthenYarn. Stearic Acid Combined with Castor Oil is Used to Make Softeners Used in Textile Sizing

12. Waxes: Stearic acid can be Binder and Thickener in Buffing Compounds.

Stearic Acid Description:

Stearic acid 50, Stearic acid 70, Stearic acid 95.gifStearic acid informaion.gif

COA of Stearic Acid

Product Name: Stearic Acid

Stearic Acid certificate of analysis.jpg


Description of Magnesium stearate:

Magnesium Stearate is a combination salt of stearic acid and Mg. Magnesium stearate contains the equivalent of 6.8%~8.3% MgO, and it is a mixture of pure stearic acid and palmitic acid where the content of stearic acid is 40.0%Min and the sum of the two acids is 90.0% Min. The British Pharmacopoeia describes magnesium stearate as consisting mainly of magnesium stearate with variable proportions of magnesium palmitate and magnesium oleate.

NOW uses USP grade stearates tested to US Pharmacopeia standards; known as pharmaceutical grade, the highest purity.


Magnesium Stearate is found in many medicines taken today in pill form. It is a proven safe substance.  

The molecular formula for magnesium stearate consists of a single magnesium atom joined to two stearate molecules, which contain complex quantities of carbon, hydrogen and oxygen. Magnesium Stearate typically appears as a white powder and Magnesium Stearate is not soluble in alcohol and in water.

Magnesium stearate’s main use now is in the tablets and capsules produced by the medical industry. Magnesium Stearate will be the lubricant which will stop other ingredients in the tablets from adhering to compression equipment during the manufacturing process. Moreover, many manufacturers use Magnesium Stearate to bind sugars in certain candies.


Our Magnesium Stearate has a better purity.

Magnesium Stearate plays an important role in making tablets. It also may works as a drier in paints and varnishes, an emulsifier for cosmetics, and occasionally as a dietary supplement.

We have helped multiple customers, from small end users to large Fortune 500 customers, with their Magnesium Stearate supply requirements and can ship bulk and various packaged products to meet such needs.

As a professional China Stearic Acid, Magnesium Stearate, Calcium Stearate Powder Raw Material supplier and Manufacturer in China, FENGCHEN GROUP CO., LTD has been supplying and exporting Stearic Acid, Magnesium Stearate, Calcium Stearate Powder API from China in China for almost 10 years.


Certificate of Analysis—Magnesium Stearate

Name   of Product

Magnesium Stearate

Testing Item



Appearance of Magnesium Stearate

A white, very fine, light, powder faint,   Characteristic Odor ,and from vegetable sources


The   content of Mg

4.0%   ~ 5.0%


Acid   or Alkalinity

≤ 0.05ml of 0.1N HCl or 0.1N

NaOH   is required to change the color of the indicator




<   0.1%



<   1.0%

Loss   on Drying

≤6.0   %


Heavy   Metal (Lead)

Magnesium Stearate


<   10ppm

Specific   surface area(p/p0)

0.05   ~ 0.15


Aerobic   Microbial Count



Combined   Molds and Yeas



Salmonella   Species



Organic   Volatile Impurities

Should   comply


Total   stearic acid and palmitic acid



Stearic   aicd




Description of Calcium stearate:

Calcium stearate is a waxy white powder found in many surfactants and some lubricants.

Calcium stearate pharmaceutical grade is also widely in medicine making process.

Calcium stearate is an odorless, white powder used in many manufacturing processes and preparations. Also known as calcium salt and octadecanoic acid, it is a carboxylate created by heating stearic acid and calcium oxide.


Common applications of calcium stearate:

1.Food additive (known as generic E number "E470")

2.Calcium stearate can be flow agent in powders

3.Calcium stearate may work as hard candy surface conditioner

4.To be Waterproofing agent for fabrics

5.Calcium stearate can also be used in Crayon and pencil as lubricant

Common industries of use:

-In Pharmaceutical industry: Pharma Grade Calcium stearate is used in pharmaceuticals and personal care products as a gelling and anti-tack agent. In addition, calcium stearate often serves as a tablet mold release agent in these arenas.

-In Concrete industry: Calcium stearate is also utilized heavily in the concrete industry as an efflorescent agent to control cementitious products used to produce blocks and pavers, in addition to waterproofing.

-In Paper industry: Calcium stearate may work as a lubricant to ensure adequate surface gloss, thereby preventing fold cracks and surface dusting.

-In Plastics industry: Calcium stearate may also function as an acid neutralizer, release agent, lubricant, and plastic colorant concentrator.


Usage and Applications:

-Food, Pharma and Nutraceuticals: Calcium stearate pharmaceutical grade  will help Mold Release for Tableting.

-Cosmetics: Calcium stearate can be Anti-Caking Agent in Powdered Cosmetics

-Lubricants and Greases: Calcium stearate works as Thickening Agent

-Personal Care: Calcium stearate function as Anti-Tack and Gelling Agent

Calcium stearate has many other potential uses, including as a flow agent, stabilizing agent and surface conditioner in the production of certain foods, notably, many candies. Pharma grade Calcium stearate is used as a mold-release agent for pharmaceutical tablets and capsules. It is also a stabilizer found in many plastics and is used to process concrete and paper.


Certificate of Analysis—Calcium Stearate

Name   of Product

Calcium Stearate

Testing Item



Appearance of Calcium Stearate

A fine, white or almost white, crystalline powder,   Practically insoluble in water and in alcohol


The   content of CaO

9.0   ~ 10.5%


Loss   on Drying

≤4.0   %


Heavy   metals



Freezing   point 

Calcium Stearate

≥   54°C


Organic   volatile impurities

Should   comply


Residual   solvents

Should   comply


Total   assay(Stearic acid)



Relative   content of stearic acid and palmitic acid



Top Quality, China Pure Stearic Acid, Magnesium Stearate, Calcium Stearate Powder factory in China; China Stearic Acid, Magnesium Stearate, Calcium Stearate Raw Material Suppliers in China. China Stearic Acid, Magnesium Stearate, Calcium Stearate API Manufacturers in China.


Related products you may interested in:

Pharma Grade Stearic Acid

Magnesium Stearate Pharmaceutical Grade

Calcium Stearate Pharmaceutical Grade

If you are looking for the stearic acid cas 57-11-4 and magnesium stearate cas 557-04-0 and calcium stearate cas 1592-23-0, welcome to contact us. We are one of the leading and professional China manufacturers and suppliers in this field. Competitive price and good after-sale service are available.

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