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MW 591.24 Technical Grade Magnesium Stearate CAS 557-04-0 Fine Powder

Product Details

Place of Origin: China

Brand Name: Hongbaiyi

Certification: COA, HPLC

Model Number: HBY-Magnesium Stearate

Payment & Shipping Terms

Minimum Order Quantity: 1kilo

Price: Negotiable

Packaging Details: woven bag lined high pressure polyethylene film; 25kg/bag or follow customer's packing instructions

Delivery Time: 3~5 days, upon recepient of payment

Payment Terms: T/T, Western Union, MoneyGram

Supply Ability: 300,000 Kilograms

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Specifications
Highlight:
Product Name:
Magnesium Stearate
Synonyms:
Stearic Acid Magnesium Salt
Linear Formula:
[CH3(CH2)16CO2]2Mg
Appearance:
White Or Off-white Fine Powder
CAS Number:
557-04-0
Molecular Weight:
591.24
Grade:
Technical Grade
Samples:
1kg
Product Name:
Magnesium Stearate
Synonyms:
Stearic Acid Magnesium Salt
Linear Formula:
[CH3(CH2)16CO2]2Mg
Appearance:
White Or Off-white Fine Powder
CAS Number:
557-04-0
Molecular Weight:
591.24
Grade:
Technical Grade
Samples:
1kg
Description
MW 591.24 Technical Grade Magnesium Stearate CAS 557-04-0 Fine Powder

MW 591.24 Technical Grade Magnesium Stearate CAS 557-04-0 Fine Powder 0

 

What is Magnesium?

 

Magnesium stearate exhibits a fine, white, and loose powder appearance with a smooth, slippery texture. It is insoluble in water, ethanol, and  but soluble in hot water.

Upon exposure to acids, magnesium stearate decomposes into stearic acid and corresponding magnesium salts. Its solubility in room temperature

water is approximately 77-79 mg/L, and it dissolves in hot ethanol. Magnesium stearate possesses a faint characteristic odor and a slippery feel.

 

Magnesium Stearate Industry Standards in China 

Table 1: General Requirement

Parameter Requirement
Appearance White or off-white powder
Odor Slight odor, characteristic
Melting range 155°C - 165°C
Loss on drying ≤ 1.0% (105°C, 2 hours)
Residue on ignition ≤ 0.1%
Heavy metals (Pb) ≤ 10 ppm
Arsenic (As) ≤ 2 ppm

 

Table 2: Physical and Chemical Properties

 

Parameter

Test Method

Requirement

Particle size

GB/T 19001-2008

≤ 100 µm (90%)

Bulk density

GB/T 19005-2008

0.40~0.60 g/cm³

Angle of repose

GB/T 19006-2008

≤ 30°

Specific surface area

GB/T 19007-2008

≥ 20 m²/g

Oil absorption

GB/T 19008-2008

≥ 100 g/100 g

pH value

GB/T 19009-2008

5.0~8.0 (5% aqueous solution)

 

 

Table 3: Impurities

Impurity

Test Method

Limit

Stearic acid

GB/T 19010-2008

≤ 2.0%

Palmitic acid

GB/T 19011-2008

≤ 1.0%

Calcium stearate

GB/T 19012-2008

≤ 0.1%

Zinc stearate

GB/T 19013-2008

≤ 0.05%

Note: These standards are based on GB 2510-2020, "Pharmaceutical Grade Magnesium Stearate".

Additional Information:

  • Magnesium stearate is a widely used pharmaceutical excipient due to its lubricating, anti-adherent, and flow-promoting properties.
  • It is commonly used in tablets, capsules, and ointments.
  • Magnesium stearate is generally considered to be safe and non-toxic.

I hope this information is helpful. Please let me know if you have any other questions.

 

Excipient list: Key Ingredients & Uses

Category Product Name Description
Cellulose and derivatives Microcrystalline cellulose This product is used as a binder, diluent, filler, disintegrant, and glidant in solid preparations. The amount used is generally 5%-20%. It can be used in both wet granulation and dry direct compression processes. When used for direct compression, the amount used is generally 10%-30%. It also has a good disintegrating effect and is a basic excipient for orally disintegrating tablets.
Cellulose and derivatives Hydroxypropyl methylcellulose This product can also be used as an anti-caking agent, dispersant, and binder in the food industry. The low viscosity grades of this product can be used as binders and disintegrants in solid preparations, and can also be used as a purifying agent for sustained-release or controlled-release tablets. The high viscosity grades of this product can be used to prepare skeletal sustained-release tablets, hydrophilic gel skeletal sustained-release tablets, as a sustained-release and controlled-release agent, and is also a good suspending agent for suspensions in liquid preparations. It can also be used to prepare hydrogels and gastrointestinal adhesive preparations due to its swelling properties in water. It is one of the main materials for plant capsules.
Cellulose and derivatives Low-substituted hydroxypropyl methylcellulose This product is mainly used as a binder for tablets, especially for poorly formed materials. The addition of this product can improve the formation and hardness of tablets. This product can also be used as a disintegrant in tablets of Western medicine or traditional Chinese medicine to promote the disintegration of drugs.
Cellulose and derivatives Croscarmellose sodium This product is mainly used as a disintegrant in solid preparations. Its characteristics are good compressibility and strong disintegrating force. As a disintegrant for tablets, it is suitable for both wet granulation and dry direct compression processes.
Starch and derivatives Dextrin This product is mainly used as a filler, binder, thickener, and emulsifying stabilizer in solid preparations.
Starch and derivatives Pharmaceutical starch This product is often used as a filler, disintegrant, and binder in solid preparations. It has poor compressibility, is hygroscopic but not deliquescent, and should not be used alone. It is often used with lactose or dextrin to increase the hardness of tablets.
Starch and derivatives Sodium carboxymethyl starch This product is mainly used as a disintegrant and binder in solid preparations and as a suspending agent in liquid preparations. The typical usage is 2-8%. This product can also be used as a thickener and stabilizer in the food industry.
Starch and derivatives Beta-cyclodextrin This product can be used as a complexing agent and stabilizer in formulations, as well as a carrier material for drugs.
Inorganic salts Magnesium stearate This product has lubricating, anti-adhesive, and flow-promoting effects. It is used as a lubricant and anti-adhesive agent for tablets and capsules. The typical usage is 0.25%-2.0%.
Inorganic salts Silicon dioxide This product has suspending thickening, and colloidal protective effects in liquid preparations. In solid preparations, it is used as a binder for granules and tablets. Because it is soluble in both water and ethanol, its ethanol solution is used as a binder for water-sensitive drugs and effervescent tablet granules. It can also be used as a solid dispersion, sustained-release, and film-forming material.
Other Povidone K30 This product is mainly used as a disintegrant for tablets, and can also be used as a disintegrant and filler for pills, granules, and hard capsules. The disintegration time and dissolution effect of tablets prepared with this product will not change over time. The loose density of the granules decreases as the amount of drug used increases, but the density does not change significantly. Tablets compressed with this product as a disintegrant have high hardness, a smooth and beautiful appearance, short disintegration time, and a high dissolution rate. This product can also be used as a clarifying agent, adsorbent, coloring stabilizer, and colloidal stabilizer.
Other Crospovidone

 

 

Product Images:

MW 591.24 Technical Grade Magnesium Stearate CAS 557-04-0 Fine Powder 1MW 591.24 Technical Grade Magnesium Stearate CAS 557-04-0 Fine Powder 2

 

Applications:

  1. Widely used in food, medicine, coatings, plastics, rubber, textiles, and other industries.
  2. Used as a heat stabilizer for polyvinyl chloride, a transparent flatting agent in the paint industry, and a lubricant to make putty smooth and bright.
  3. A novel pharmaceutical excipient that can be used as a film-forming coating material for solid dosage forms, a thickener for colloidal liquid dosage forms, and a suspending agent. It can also be used as a pharmaceutical tablet excipient (filler and lubricant).
  4. Used in powder cosmetics to improve adhesion and lubricity.
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