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CALCIUM STEARATE

 


Calcium stearate is a carboxylate of calcium, classified as a calcium soap. It is a component of some lubricants, surfactants, as well as many foodstuffs. It is a white waxy powder.


CAS NO:1592-23-0
EC NO:216-472-8


IUPAC NAMES:
calcium bis(12-hydroxyoctadecanoate)
calcium bis(octadecanoate)
calcium dioctadecanoate
calcium dioctadecanoate 
Calcium Distearate
Calcium distearate
calcium distearate
Calcium distearate
Calcium octadecanoate
calcium octadecanoate
Calcium Stearate
calcium stearate
Calcium stearate
calcium-distearat
calcium;octadecanoate
Octadecanoic acid, calcium salt


SYNONYMS:


STEARIC ACID CALCIUM SALT
OCTADECANOIC ACID CALCIUM SALT
aquacal
calciumdistearate
calstar
dibasiccalciumstearate
flexichem
flexichemcs
g339s
nopcotec104
stavinor30
stearatedecalcium
witcog339/s
witcog339s
calcium distearate, pure
Calcium Stearate (Light)
Calciumstearatemin
Calciumstearatetech
CalciuM Stearate, 95.0%(T)
Calcium stearate 6.6-7.4% Ca basis
Calcium stearate Vetec(TM) reagent grade
ACRYL/BIS (37,5:1)
CALCIUM OCTADECANOATE
CALCIUM STEARATE
Calcium stearate, 6.4 to 7.4% (Ca)
calaiumstrarate
Calcii stearas
Deasit PC
HyQual
Kemistab EC-F
yinzhisuangai
CALCIUM STEARAT
STEARIC ACID CALCIUM SALT 9.0-10.5%
Calcium Stearate NF
CalciumSulphate(Dihydrate)Gr(PrecipitatedPowd)
CalciumStearatePure
CALCIUM STEARATE (CEASIT)
CALCIUM STEARATE, PHARMA
Calcium stearinate
Calciumstearate,min.85%
CALCIUMSTEARATE,FCC
Calciumdistearat
Calcium stearate dispersion liquid
Calcium stearate, extra pure, Ph Eur, BP, NF, FCC, E 470
Bis(octadecanoic acid)calcium salt
Bis(stearic acid)calcium salt
Bisstearic acid calcium salt
Distearic acid calcium
CalciuM stearate NF/FCC
Calcium Stearate (2 g) (AS)
CalciuM Stearate (AS)
CAL STEARATE 5853 HYQUAL
CalciCalcium stearateum stearate
Octadecanoic acid, calcium salt (2:1)
Hot sale calcium Stearate
Calcium Stearate >
Calcium Stearate, 2.0micro m
cium Stearate


CALCIUM STEARATE


Production and occurrence
Calcium stearate is produced by heating stearic acid and calcium oxide:


2 C17H35COOH + CaO → (C17H35COO)2Ca + H2O
It is also the main component of soap scum, a white solid that forms when soap is mixed with hard water. Unlike soaps containing sodium and potassium, calcium stearate is insoluble in water and does not lather well.[2] Commercially it is sold as a 50% dispersion in water or as a spray dried powder. As a food additive it is known by the generic E number E470.


Applications
Calcium stearate is a waxy material with low solubility in water, unlike traditional sodium and potassium soaps. It is also easy and cheap to produce, and exhibits low toxicity. These attributes are the basis of many of its applications. Related applications exist for the magnesium stearate.[1]


* Calcium stearate is used as a flow agent and surface conditioner in some candies such as Smarties, jawbreakers and Sprees.
* It is a waterproofing agent for fabrics.
* A lubricant in pencils and crayons.
* A lubricant in the dry drawing method of wire production
* The concrete industry uses calcium stearate for efflorescence control of cementitious products used in the production of concrete masonry units i.e. paver and block, as well as waterproofing.[3]
* In paper production, calcium stearate is used as a lubricant to provide good gloss, preventing dusting and fold cracking in paper and paperboard making.[4]
* In plastics, it can act as an acid scavenger or neutralizer at concentrations up to 1000ppm, a lubricant and a release agent. It may be used in plastic colorant concentrates to improve pigment wetting. In rigid PVC, it can accelerate fusion, improve flow, and reduce die swell.
* Applications in the personal care and pharmaceutical industry include tablet mold release, anti-tack agent, and gelling agent.
* Calcium stearate is a component in some types of defoamers.
* Anticaking agent.[5]


Properties
Chemical formula        C36H70CaO4
Molar mass        607.030 g·mol−1
Appearance        white to yellowish-white powder
Density        1.08 g/cm3
Melting point        155 °C (311 °F; 428 K)
Solubility in water        0.004 g/100 mL (15 °C)
Solubility        soluble in hot pyridine
slightly soluble in oil
insoluble in alcohol, ether


*Industry Uses        
Adhesives and sealant chemicals
Anti-adhesive agents
Fillers
Finishing agents
Flame retardants
Hydrophob agent
Intermediates
Lubricants and lubricant additives
Neutralizing Agent
Polymer Stabilizer
Processing aids, not otherwise listed
Processing aids, specific to petroleum production
Surface active agents


*Consumer Uses        
Adhesives and sealants
Building/construction materials not covered elsewhere
Cleaning and furnishing care products
Electrical and electronic products
Food packaging
Intercompany Shipments
Lubricants and greases
Non-TSCA use
Paints and coatings
Paper products
Pharmaceuticals
Plastic and rubber products not covered elsewhere


*Industry Processing Sectors
Adhesive manufacturing
Agriculture, forestry, fishing and hunting
All other chemical product and preparation manufacturing
Construction
Custom compounding of purchased resin
Food, beverage, and tobacco product manufacturing
Miscellaneous manufacturing
Paper manufacturing
Petroleum lubricating oil and grease manufacturing
Pharmaceutical and medicine manufacturing
Plastic material and resin manufacturing
Plastics product manufacturing
Rubber product manufacturing
Soap, cleaning compound, and toilet preparation manufacturing
Utilities


Consumer Uses
Calcium stearate is used in the following products: lubricants and greases.
Other release to the environment of this substance is likely to occur from: indoor use as processing aid, outdoor use as processing aid, indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters) and outdoor use in close systems with minimal release (e.g. hydraulic liquids in automotive suspension, lubricants in motor oil and break fluids).


Article service life
Other release to the environment of this substance is likely to occur from: outdoor use in long-life materials with low release rate (e.g. metal, wooden and plastic construction and building materials).
Calcium stearate can be found in products with material based on: plastic (e.g. food packaging and storage, toys, mobile phones), stone, plaster, cement, glass or ceramic (e.g. dishes, pots/pans, food storage containers, construction and isolation material) and paper (e.g. tissues, feminine hygiene products, nappies, books, magazines, wallpaper).


Widespread uses by professional workers
Other release to the environment of this substance is likely to occur from: indoor use as processing aid, outdoor use as processing aid, indoor use in close systems with minimal release (e.g. cooling liquids in refrigerators, oil-based electric heaters) and outdoor use in close systems with minimal release (e.g. hydraulic liquids in automotive suspension, lubricants in motor oil and break fluids).


Formulation or re-packing
Calcium stearate is used in the following products: polymers, lubricants and greases and pharmaceuticals.
Calcium stearate has an industrial use resulting in manufacture of another substance (use of intermediates).
Release to the environment of this substance can occur from industrial use: formulation of mixtures and formulation in materials.


Uses at industrial sites
Calcium stearate is used in the following products: laboratory chemicals, cosmetics and personal care products and polymers.
Calcium stearate has an industrial use resulting in manufacture of another substance (use of intermediates).
Calcium stearate is used in the following areas: formulation of mixtures and/or re-packaging and building & construction work.
Calcium stearate is used for the manufacture of: chemicals and pulp, paper and paper products.
Release to the environment of this substance can occur from industrial use: in processing aids at industrial sites, as an intermediate step in further manufacturing of another substance (use of intermediates), as processing aid and of substances in closed systems with minimal release.


Overview        


Calcium stearate also known as calcium octadecanoic acid. Light white crystalline powder. Chemical formula (C17H35COO) 2Ca. The molecular weight is 607.00. Melting point 179~180 ℃, decomposed by heat. Insoluble in water, cold ethanol and diethyl ether, soluble in hot benzene, toluene, and turpentine, slightly soluble in hot ethanol and diethyl ether. It reacts with strong acid to be decomposed into stearic acid and corresponding calcium salt. Water absorption in the air. Intolerance lipolytic microorganisms. Pyrolysis to generate stearin ketones and hydrocarbons. Non-toxic. Industrial often mixed with the corresponding oleate.As stabilizers and lubricants of polyvinyl chloride; as halogen absorbent of polyethylene and polypropylene; as lubricants of polyolefin fibers and molded products; as lubricant and release agent of phenolic, amino and other thermosetting plastics; as intensifier of lubricating grease; as waterproofing agent of waterproof fabric; etc. Food grade Calcium stearate serves as an anti-caking agent. Dilute soap is made by the reaction of melt stearic acid and sodium hydroxide, reacting with calcium chloride, and Calcium stearate is obtained .


It can be used as heat stabilizer of polyvinyl chloride, it has excellent lubricity. Thermal stability performance is general, and is less than barium stearate, lead stearate, tin stearate and cadmium stearate. But it is cheap, low toxicity, good processability. Combined with Zinc soap and an epoxy compound, it shows a synergistic effect, improving the thermal stability, and it is commonly used for requirements nontoxic soft products, such as food packaging films, medical instruments, etc. It combines with the base lead salts and lead soaps used for hard products, increasing the gelation speed. Calcium stearate is used for polyethylene and polypropylene, and it can eliminate the adverse effects of residual catalyst on the resin color and stability. This product is also widely used as lubricant and release agent of thermosetting plastics, such as polyolefin, polyester reinforced plastics, phenolic resin, amino resin, etc.
The disadvantage of Calcium stearate is initial color. When heating at above 100 ℃ with longer time, Calcium stearate will make the white PVC become a reddish color. Particularly when titanium dioxide exists in formula, coloring is particularly serious. At this point, if 0.06~0.12% Na2CO3 or 0.09~0.19 NaHCO3 are added, it can overcome this shortcoming. But because these substances are too alkaline, they are not used in practice. In addition, when the amount of this product is large, there is segregation scaling phenomenon.


Description        
Calcium stearate is carboxylate of calcium that is found in some lubricants and surfactants. It is a white waxy powder.


Chemical Properties        
white, granular, fatty powder(s); used as a water repellent; flattening agent in paints 


Chemical Properties        
Calcium stearate occurs as a fine, white to yellowish-white, bulky powder having a slight, characteristic odor. It is unctuous and free from grittiness.


Uses        
For waterproofing fabrics, cement, stucco, explosives; as a releasing agent for plastic molding powders; as a stabilizer for polyvinyl chloride resins; lubricant; in pencils and wax crayons. Food grade calcium stearate, derived from edible tallow, is used as a conditioning agent in certain food and pharmaceutical products.


Uses        
Calcium Stearate is the calcium salt of stearic acid which functions as an anticaking agent, binder, and emulsifier. it is used in garlic salt, dry molasses, vanilla and vanilla-vanillin powder, salad dressing mix, and meat tenderizer. it can be used for mold release in the tableting of pressed candies.


Production Methods        
Calcium stearate is prepared by the reaction of calcium chloride with a mixture of the sodium salts of stearic and palmitic acids. The calcium stearate formed is collected and washed with water to remove any sodium chloride.


Application        
Calcium stearate is used as a flow agent in powders including some foods (such as Smarties), a surface conditioner in hard candies such as Sprees, a waterproofing agent for fabrics, a lubricant in pencils and crayons.
The concrete industry uses calcium stearate for efflorescence control of cementitious products used in the production of concrete masonry units i.e. paver and block, as well as waterproofing.
In paper production, calcium stearate is used as a lubricant to provide good gloss, preventing dusting and fold cracking in paper and paperboard making.
In plastics, it can act as an acid scavenger or neutralizer at concentrations up to 1000ppm, a lubricant and a release agent. It may be used in plastic colorant concentrates to improve pigment wetting. In rigid PVC, it can accelerate fusion, improve flow, and reduce die swell.
Applications in the personal care and pharmaceutical industry include tablet mold release, anti-tack agent, and gelling agent.
Calcium stearate is a component in some types of defoamers.


Preparation        
Calcium stearate is produced by heating stearic acid, a fatty acid, and calcium oxide:
2C17H35COOH + CaO→(C17H35COO)2Ca + H2O


It is also the main component of soap scum, a white solid that forms when soap is mixed with hard water. Unlike soaps containing sodium and potassium, calcium stearate is insoluble in water and does not lather well . Commercially it is sold as a 50 % dispersion in water or as a spray dried powder. As a food additive it is known by the generic E number E470. .


Definition        
Variable proportions of calcium stearate and calcium palmitate.


Pharmaceutical Applications        
Calcium stearate is primarily used in pharmaceutical formulations as a lubricant in tablet and capsule manufacture at concentrations up to 1.0% w/w. Although it has good antiadherent and lubricant properties, calcium stearate has poor glidant properties.
Calcium stearate is also employed as an emulsifier, stabilizing agent, and suspending agent, and is also used in cosmetics and food products.


Calcium stearate is recognized as physiologically safe, and is insoluble in most solvents. Compared to waxes, it has a relatively high softening point, and, consequently, do not become greasy at higher temperatures.


Calcium stearate is primarily used as an acid scavenger, release agent and lubricant in the plastics industry, for waterproofing in construction, and as an anti-caking additive in pharmaceuticals and cosmetics. In addition, Baerlocher has developed special thermostable calcium stearate products designed to withstand exceptionally high temperatures.


Calcium stearate is obtained from the reaction of stearic acid and lime.


2 C17H35COOH + CaO → (C17H35COO) 2Ca + H2O


* It is a white and silky fine powder to the touch.
* It is very stable in high temperature conditions.
* It is non-toxic and is even used as a food additive.
* It is highly water resistant and has water repellent properties.
* It acts as a lubricant, release agent, stabilizer and thickener in various processes.
* It is an excellent process facilitator used in injection and extrusion processes. It increases product homogeneity, reduces energy consumption and saves on raw material. It is also used as a stabilizer where it is possible to achieve better transparency, good color retention, long term stability and weather resistance properties.


It is used as an anti-caking agent in cosmetic, pharmaceutical, food and chemical formulations due to its lubricating and water-repellent properties. It prevents the products from absorbing moisture and sticking, and increases plasticity. Calcium stearate is added to increase efficiency in production by extruding and laminating plastics and metals.


Calcium Stearate is a superior molder and internal lubricator. It is proper to plastic and construction industiral appications. It can be manufactured with demanded particular size and density, according to production process and industry.


Calcium stearate is a carboxylate of calcium, classified as a calcium soap. Calcium stearate is a component of some lubricants, surfactants, as well as many foodstuffs. It is a white waxy powder. Calcium stearate is a waxy material with low solubility in water, unlike traditional sodium and potassium soaps. Calcium stearate is also easy and cheap to produce and exhibits low toxicity. These attributes are the basis of many of its applications.


Calcium stearate is a compound of calcium with a mixture of solid organic acids obtained from edible sources. It is generally
used as a solid-phase lubricant that reduces friction between particles of the substance to which it is added.


Uses:
Extremely low solubility makes calcium stearate a very versatile substance. It is mainly used as a dough conditioner and is commonly used with other dough softeners such as mono- and diglycerides (Kamel 1993). Food grade calcium stearate can also be used as an emulsifier, flavoring agent, anti-dusting agent, stabilizer, release agent, and/or thickening agent (Merck 2001). Other uses include waterproofing, as a releasing agent for plastic molding powders, as a stabilizer for polyvinyl chloride resins, lubricant, and as a conditioning agent in various pharmaceutical products.


Calcium Stearate (Ca-30) is a neutral calcium soap manufactured from a high-quality vegetable source of stearic acid. Calcium stearate is commonly used as an internal lubricant and release agent in polyolefin processing applications. It is hygroscopic and can also be used as an adhesion protector in rubber applications.


Appearance        Fine, white powder
Calcium Content        7.0 % ±0.5
Free Fatty Acid        0.5 % Max.
Melting Point        155°C ± 5
Ash Content        10 % ±0.5
Moisture        1% Max.
Iodine Number        0.5% Max.
Particle Size (200 mesh residue)        0%


Calcium stearate is a fine, white powder. It is an insoluble salt of calcium, stearic acid, and palmitic acid.


Calcium stearate, which is recognized as physiologically safe, has become increasingly important in recent years. Calcium stearate is insoluble in most solvents. It dissolves only slightly when heated in aromatic compounds, chlorinated hydrocarbons or vegetable and mineral oils and waxes.


Calcium stearate is primarily used as a release agent, lubricant and acid scavenger by the rubber and tire industry.


What Is It?
The Stearate salts, including Lithium Stearate, Aluminum Distearate, Aluminum Stearate, Aluminum Tristearate, Ammonium Stearate, Calcium Stearate, Magnesium Stearate, Potassium Stearate, Sodium Stearate, and Zinc Stearate are fine, white powders with a slight fatty odor. In cosmetics and personal care products, Stearate salts are used mainly in the formulation of makeup products such as eyeliner, eyeshadow, mascara, lipsticks, blushers, face powders and foundations. They are also used in fragrances, deodorants, and hair and skin care products.


Why is it used in cosmetics and personal care products?
The Stearate salts are generally used for their lubricating properties. They also help to keep emulsions from separating into their oil and liquid components. The Stearate salts increase the thickness of the lipid (oil) portion of cosmetics and personal care products and reduce the clear or transparent appearance of finished products.


Scientific Facts: 
The commercial stearic acid from which the Stearate salts are manufactured is actually a mixture of monocarboxylic acids obtained from animal and/or vegetable sources.


What is it?
Calcium stearate (C36H70CaO4) is a mixture of calcium oxide with solid fatty acids such as stearic and palmitic acids. It is used as pharmaceutical excipient in manufacturing and used for tablet and capsule lubrication. It has good anti-adherent and lubricant properties but poor glidant properties. Calcium stearate is also used in cosmetics and food products.


Calcium stearate is carboxylate of calcium that is found in some lubricants and surfactants. Calcium Stearate is a white waxy powder and is also the main component of soap scum.


Calcium Stearate is commonly used in products such as foods, fabrics, concrete, paper, plastics, and many more.


Food Additives. Anticaking. USP grade
Plastic Compounding and Masterbatch
Polyolefin manufacture
PVC pipe
Coatings


Calcium stearate is carboxylate of calcium that is found in some lubricants and surfactants. It is a white waxy powder.


Other Known Names: calcium octadecanoate


Molecular Formula: C36H70CaO4


Applications: flow agent and surface conditioner in foods, efflorescence control and waterproofing in concrete


Calcium Stearate is used by the rubber and plastic industries as an effective elastomer processing aid and release agent. The low chloride content of  Calcium Stearate allows for complete product dispersion in elastomers. Calcium Stearate reduces extruder
pressure build-up of rigid PVC compounds when used as a processing aid during the manufacture of pipe, siding and injection molded fittings. The low chloride content of  Calcium Stearate meets the quality and processing demands of polyolefin, polystyrene and polyester manufacture.


Calcium Stearate can also be used as a processing aid in wire drawing operations, and as an anti-caking additive in dry blending operations. Some of the benefits of using Calcium Stearate are:
- LOW IMPURITY Reduces extruder pressure build-up and minimizes fiber breakage during
extrusion and spinning.
- COLOR STABILITY High-purity and a unique manufacturing process give this product
extreme heat resistance to prevent discoloration and haze formation.


Calcium Stearate is a high purity, non-wettable, calcium stearate powder manufactured with
high quality stearic acid. During manufacture, the particle size, shape, bulk, and purity of Calcium Stearate are closely controlled to guarantee product uniformity.


Calcium Stearate is a white coloured powdery/waxy substance that is obtained when soap is mixed with water that contains ions of Calcium. It is essentially a synthetic ingredient that is a product obtained as a reaction between Stearic Acid and Calcium Oxide, when heated together. Calcium Stearate is generally non-toxic. It is considered to be the most important type of Calcium Salt.


Calcium Stearate is not poisonous for human consumption because of which it is commonly used in the manufacture of Pharmaceutical consumables and Food Products. The Cement Industry constantly employs Calcium Stearate. The Paper Industry also employs Calcium Stearate for enhancing the sheen and to prolong the life of Paper. Calcium Stearate is also used in the manufacture of a variety of Tablets and Capsules. It is used in the manufacture of PVC products such as PVC Compounds, Rigid PVC Pipes, Cables, Poly Propylene, Plastic, Explosives, Foundry Chemicals, Cement, Paints, and Cosmetics. The Food Industry uses Calcium Stearate in the manufacture of Spices and Salt, Confections, Supplements etc.


It is a substance that is not in the form of white powder. Calcium stearate is obtained with acid. It can be used in industry, food, cosmetics, plastics and pharmaceuticals. Stearic acid and calcium
Aiming by reaction by heating. The slider is waterproof, due to the fact that this material does not dissolve in water. Calcium stearate is used as a source fluidity agent, its usage areas are very wide and its waterproof feature is used in the concrete industry. Calcium stearate is an ingredient in the form of antifoam. It is used as a water repellent agent in cement based products, especially in plaster, joint and water insulation mortars.


Calcium Stearate is a carboxylate of calcium, classified as a calcium soap. It is a component of some lubricants, surfactants, as well as many foodstuffs. It is a white waxy powder.


Description:
White powder of the reaction of a fatty acid with calcium salts. The appearance is creamy fine powder or granular with a slight odor of caramel, slightly soluble in hot water. Is an internal lubricant or fusion promoter. also can be used as a co-stabilizer and is widely used for rigid and flexible PVC extrusion industry formulations.


Applications:
Fusion Promoter and stabilizer for PVC.
Lubricant for ABS and PS.
Neutralizer catalyst residues in PE and PP.
Anti-caking agent for »rubber pellets».
Antistatic for polymer.
Waterproofing for concrete.
Ingredient for paper coatings.
Anti-caking agent for powder fire extinguisher.
Anti-caking agent for various powders.
Additive against secondary efflorescence on concrete.


Calcium Stearate is an insoluble metallic salt produced by saponification reaction of Calcium and Stearic Acid. Calcium Stearate is non-toxic and has multiple applications in different production processes. It is extensively used in the manufacturing of PVC Compounds, Rigid PVC Pipes, Cables, Poly Propylene, Plastic, Explosives, Foundry Chemicals, Cement, Paints, Cosmetics, Pharmaceuticals etc. Calcium Stearate has high stability to heat and light.


Calcium Stearate is widely used as a stabilizer for PVC resins and lubricant for plastic moulding powders or tablets. It can be used as an external lubricant in PVC processing due to the presence of high amount of Stearic Acid. It promotes fusion and has a high stability to heat.


Calcium Stearate is used as thickening agent for lubricating grease.


Calcium stearate is also used as a lubricating agent in paper and paperboard coating compositions. The paper production line utilizes Calcium Stearate to give paper that semi-matte gloss at a lower cost and also to extend the life of the paper.


Calcium Stearate is a metallic salt produced by saponification reaction of Calcium Base and Stearic Acid. It has multiple applications in different production processes varying from lubricants right down to food products. Chemicals are often added to it to enhance or reduce its properties and then applied depending on the end product. It is commercially available in a liquid form with 50% dispersion or in a dry powdered form. Calcium Stearate is commonly used in the food and medical drugs in the form of a stabilizer or emulsifier depending on the product required and the form it needs to take up. They provide high quality industrial chemicals including Calcium Stearate which are put to multiple uses as follows:


•        Calcium Stearate being regarded harmless is generally considered fit for human consumption which is why one of the main uses is in the manufacture of tablets and capsules. In this process, it prevents chemicals from sticking to each other during the production and transportation phases. Calcium Stearate helps prevent chemicals from sticking to the processing equipment when the chemical powders are processed into solid tablets. The same principle applies to processing of food products like candies and other confectionary.
•        The cement industry often uses Calcium Stearate in the liquid form to prevent secondary efflorescence. This helps in reducing the loss of the solvated salt into the atmosphere due to continuous exposure of cement to air in the atmosphere.
•        The paper production line also utilizes Calcium Stearate to give paper that semi-matte gloss at a lower cost and also to extend the life of the paper.
•        Calcium Stearate is used in the manufacture of PVC. It acts as an external lubricant in PVC processing. It promotes fusion and has a reasonable stability to heat.
•        Calcium Stearate is used as thickening agent for lubricating grease.
•        Applications in the personal care and pharmaceutical industry include tablet mold release, anti-tack agent, and gelling agent.


Physical and Chemical Properties:
Appearance             :  solid, powder
Colour                     :  white
pH                           :  7 – 9
Density                    :  1.095 g/cc
Solubility                 :  soluble in organic solvents // insoluble in water
Melting Point           :  145-1750C
Ignition Temperature:  4000C
Decomposition
Temperature            :  >3500C


Calcium stearate is a fatty acid calcium complex preparation.
Used as a stabilizer and a lubricant in rigid PVC processing, PVC compounding and moulding, in leather cloth manufacturing. It is used as a lubricant, in iron wire drawing and used as an anti caking agent in detergent Cakes and cosmetics.


Calcium Stearate Usage


1.Used as waterproofing agent, lubricant and plastic additive
2.Used as internal lubricant and non-toxic stabilizer of polyvinyl chloride, as a release agent in the foundry industry
Calcium Stearate is a salt of Stearic Acid used in the synthesis of surfactants and detergents due to the fatty acid component of its structure.


What are the Uses of Calcium stearate?
Calcium stearate is mainly used as an anti-caking agent in food, cosmetics and pharmaceuticals for its lubricating and water-repelling properties.


Food
It can be used as a solid-phase lubricant to prevent ingredients and finished products from sticking caused by absorbing moisture.


In bread, it is a dough conditioner that functions as a free-flowing agent, and is commonly used together with other dough softeners such as mono- and diglycerides. (4)


The following food list may contain it:  


Bakery
Calcium supplements
Mints
Soft & hard candies
Fats and oils
Meat products 
Fish products 
Snack foods
Cosmetics
It is generally used for its lubricating properties. It maintains emulsions from separating into oil and water phases in cosmetics and personal care products.


Pharmaceuticals
It is an excipient that can be used as a mold-release agent (to help machines run fast) in the manufacturing of pharmaceutical tablets and capsules. 


Plastics
Calcium stearate is used as a lubricant, release agent and an acid scavenger (to neutralize hydrochloric acid) in the manufacturing of plastics, e.g. vinyl polychloride (PVC) and polyethylene (PE).


Other uses
It can also be used in coating, paper, rubber, concrete, textile, an antifoaming agent and so on.


Appearance
White to yellowish-white waxy powder or dispersions, with a slight, characteristic fatty odor, and a grease touch.


Solubility
Like magnesium stearate, it is sparingly soluble in water (solubility 0.004 g/100 mL at 25 °C), while the other two metallic stearates, sodium and potassium stearate are soluble in water.


Slightly soluble in hot alcohol, hot vegetable and mineral oils. (3)


Why is it insoluble in water?


Divalent Ca2+ can bind two non-polar fatty acid molecules, while Na+ and K+ can only bind to one fatty acid as a monovalent ion. Two fatty acid molecules prevent Ca2+ interact with water molecules, thus making it insoluble in water.


How is Calcium Stearate Made?
It can be produced as a white precipitate by the reaction between calcium chloride and sodium stearate in aqueous solution. The following is the chemical equation:


CaCl2 + 2C17H35COONa → (C17H35COO)2Ca + 2NaCl


It can also be made by reacting stearic acid with calcium oxide (2). The following is the chemical equation:


2C17H35COOH + CaO → (C17H35COO)2Ca + H2O


What's Calcium stearate?


Answer: Calcium Stearate is an insoluble salt of calcium, stearic acid and palmatic acid. In hard water, when soap of calcium ions is mixed, the scum that is formed is calcium stearate. Calcium stearate is non-toxic and has many applications as stabilizer and lubricant. Besides water, it is insoluble in water, ether, chloroform, acetone, cold alcohol as well. However, it is slightly soluble when dissolved in hot alcohol, hot vegetable and mineral oil. It shows good solublity in hot pyridine.


What is the utilization of calcium stearate?


Answer: The use of calcium stearate is seen widely as a stabilizer for PVC resins and lubricant for plastic moulding powders or tablets. Its use is recommended also in emulsions, cements, pencils, construction chemicals, paint flattening agent, resin coated sands and foundry chemicals, decaking agent in food items like onions and cosmetics. Use of calcium stearate is seen as a lubricating agent in paper and paperboard coating compositions, iron wire drawing and leather cloth manufacturing as well. Its use has been extended as a neutralizer, colour stabilizer, reducer of fiber breakage and de-agglomerator in PP and HDPE applications.


What is the alias of Calcium Stearate?


Calcium stearate is also known as octadecanoic acid calcium salt, stearic acid calcium salt.


Material Safety Data Sheet for Calcium Stearate


calcium stearate MSDS Number: SY6480 --- Effective Date: 06/19/22
Section 1: Chemical Product and Company Identification
Product Name: Calcium Stearate
CAS No.: 1592-23-0
EC No.: 216-472-8
Synonym: Octadecanoic acid calcium salt, Stearic acid calcium salt
Chemical Name: Calcium stearate
Chemical Formula:C36H70CaO4


The concrete industry uses calcium stearate for efflorescence control of cementitious products used in the production of concrete masonry units i.e. paver and block, as well as waterproofing.
Calcium Stearate used as an internal Lubricant and helping dispersion in Masterbatch.
In paper production, calcium stearate is used as a lubricant to provide good gloss, preventing dusting and fold cracking in paper and paperboard making.
Calcium Stearate is very compatible for all plastic application,
Calcium Stearate used Coatings application and especially for Paint Industry.
Calcium stearate used as a lubricant for styrene resin, phenol resin, amino resin,
Calcium stearateis generally used as a PVC heat stabilizer.
Calcium Stearate used as a lubricant for Polyolefin
Calcium Stearate used as a hydrophobic agent for construction chemicals
In plastics, it can act as an acid scavenger or neutralizer at concentrations up to 1000ppm, a lubricant and a release agent. It may be used in plastic colorant concentrates to improve pigment wetting. In rigid PVC, it can accelerate fusion, improve flow, and reduce die swell.
Calcium stearate is a component in some types of defoamers.
Used as a stabilizing agent in the forming of jawbreakers.


Calcium stearate is non-toxic white, fine powder, insoluble in water. When mixed with hot, strong mineral acids, they decomposed into stearic acid and corresponding calcium salts. When certain types of fatty acids are heated with an alkaline substance, the resulting salt is known as soap. Stearic acid is one of the most widely used components of soaps. Calcium stearate is a synthetic ingredient formed through a reaction when stearic acid and calcium oxide are heated together. It is the most important type of calcium salt, but due to its lack of solubility, it is not commonly used in soap in modern times, having been replaced by synthetic substances that are water soluble. Calcium stearate is widely used in cosmetics, plastics, and pharmaceuticals. This salt is used as a plasticizer, stabilizer, and surfactant.


 

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