MAGNESIUM STEARATE

PRODUCT IDENTIFICATION
CAS NO. 557-04-0

MAGNESIUM STEARATE

EINECS NO. 209-150-3
FORMULA Mg(C17H35CO2)2
MOL WT. 591.25

HS CODE

  
TOXICITY  
SYNONYMS Octadecanoic Acid, Magnesium Salt;
Magnesium Distearate; Dibasic Magnesium Stearate; Magnesiumdistearat (German); Diestearato de magnesio (Spanish); Distéarate de magnésium (French);
SMILES  

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE Fine white to yellow-white powder
MELTING POINT 150 C
BOILING POINT  
SPECIFIC GRAVITY 1.03
SOLUBILITY IN WATER Insoluble
pH  
VAPOR DENSITY  
AUTOIGNITION

 

NFPA RATINGS Health: 1; Flammability: 0; Reactivity: 0

REFRACTIVE INDEX

 
FLASH POINT

 

STABILITY  

APPLICATIONS

Gelling Agent, Stabilizer, Lubricant, Anti-sticking Agent, Sanding Agent, Emulsifier And Plasticizer for Polymer, Paper Pharmaceutical, Rubber, Cosmetic, Paint and Food Industries.

SALES SPECIFICATION (VEG. GRADE)

BIBLIOGRAPHY

USP 23/ NF 18

APPEARANCE

White powder

IDENTIFICATION

Pass Test

Mg CONTENT

4 - 5%

STEARIC ACID

40% min

HEAVY METALS

20ppm max

LEAD

10ppm max

CHLORIDES

0.1% max

ACIDITY & ALKALINITY

Pass Test

SULPHATES

0.25% max

FREE FATTY ACID

0.5% max

ASH (as MgO)

7.5% max

TOTAL MICROBIAL COUNT

1,000/g max

SALMONELLA Negative
TOTAL MOLDS AND YEASTS

500/g max

E. COLI Negative
LOSS ON DRYING

4.0% max

MELTING POINT

150 C

SIEVE ANALYSIS

99.8% Through 200 mesh

TRANSPORTATION
PACKING 20kgs in Bag
HAZARD CLASS  
UN NO.  

GENERAL DESCRIPTION OF METALLIC SALTS OF FATTY ACIDS
Metallic salts of fatty acids (called soap) are primarily used as cleansing agent (mainly sodium- and potassium-) which their molecules attach readily to both polar molecules (of water) and non-polar molecules (of grease or oil). The long hydrocarbon chains are non-polar (and hydrophobic) repelled by water and the salt end molecules are ionic (and hydrophilic) water soluble. Soaps differ according to the type of fatty acid and length of the carbon chain and according to the alkali employed. Fatty acids with longer chains are insoluble. If sodium hydroxide is used as the alkali, hard soaps are formed; potassium hydroxide yields soft soaps. Soap salts are used as insecticides, herbicides, fungicides and algaecides. The lipophilic carbon chains infiltrate and destroy the lipoprotein matrix of the insect's cell membranes. Food grade soap salts are used also as  general purpose food additives. Aluminum, calcium, magnesium, lead, zinc or other metals are used in place of sodium or potassium for soaps to be used in industry. Metallic salts of fatty acids are used as stabilizer and plasticizer in plastic industry as well as in cosmetics. They are used as flatting and sanding agents in lacquers, coatings & inks. They can be applied in tablet manufacturing. They are used as drying lubricants and dusting agents for rubbers. They are used as catalysts in chemical synthesis and emulsifiers for emulsion polymerization of synthetic rubber and resin which can be approved for use in food contact applications. They are used as waterproofing additives and ointments.