• Calcium stearate

Calcium stearate

  • CasNo:1592-23-0
  • Purity:99%

Product Details;

CasNo: 1592-23-0

Molecular Formula: C36H70CaO4

Appearance: white solid

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  • Molecular Formula:C36H70CaO4
  • Molecular Weight:607.027
  • Appearance/Colour:white solid 
  • Vapor Pressure:0Pa at 25℃ 
  • Melting Point:147-149 °C 
  • Boiling Point:359.4 °C at 760 mmHg 
  • Flash Point:162.4 °C 
  • PSA:52.60000 
  • Density:1.08 g/cm3 
  • LogP:12.51080 

Calcium stearate(Cas 1592-23-0) Usage

chemical properties

Calcium stearate is a white, odorless powder that is insoluble in water and slightly soluble in hot ethanol. It serves various purposes across different industries.

Anti-caking agent

Anti-caking agent, also known as caking inhibitor, is used to prevent the particles and powdered food from aggregation and agglomeration, maintaining its loose or free flowing substances. 


ADI unrestrictive provision (FAO/WHO,2001). GRAS(FDA,§184.1229, 2000).

Limitation of utilization

FAO/WHO (1984): coated with glucose powder, sucrose powder and stock cube, etc. 15g/kg. GB 2760-1996: chewing gum base, GMP limit. In USA, it is used for beet sugar, pressed candies, garlic salt, meat tenderizer, dry molasses, salad prefabricated powder, spice powder, yeast.


In the realm of plastics and rubber, calcium stearate functions as a lubricant for resin colors and molding products, as well as a release agent for phenolic and amino thermosetting plastics. It is also employed as a thickening agent in grease formulations and as a waterproofing agent in textiles. In the food industry, food-grade calcium stearate acts as an anti-caking agent, preventing the aggregation and agglomeration of powdered or crystalline food products, ensuring free-flowing characteristics. While China's regulations currently only permit potassium ferrocyanide for use as an anti-caking agent in salt, international regulations allow the use of calcium stearate for coating glucose powder, sucrose powder, and stock cubes, with a maximum allowable amount of 15 g/kg according to FAO/WHO regulations. Additionally, calcium stearate finds applications in medicine, cosmetics, and as a plastic additive, serving as a lubricant, emulsifier, stabilizer, release agent, and accelerator. In its various uses, calcium stearate plays a role in enhancing the properties and performance of diverse materials.

Production methods

Firstly melted stearic acid reacts with sodium hydroxide solution to form a dilute soap, then reacted with calcium chloride, Calcium stearate crude is obtained, followed by washed, swirling water, drying, finished product is obtained. Kg/ton stearate, 920 sodium hydroxide (100% discount) 140 Calcium chloride (100% discount) 400. After food grade sodium stearate interacts with calcium chloride solution, follow by filtered and refined.


Toxic substance

Toxicity grading

Low toxicity

Acute toxicity

Oral-rat LD50:> 10000 mg/kg; Oral-mouse LD50:> 10000 mg/kg.

Flammability hazard characteristics

A public dust hazard; acrid smoke is generated by thermal decomposition.

Storage Characteristics

Storehouse keeps low temperature, dry and ventilated.

Extinguishing agent


Occupational standards

TWA 10 mg/m3


Variable proportions of calcium stearate and calcium palmitate.


A nuisance dust.

Flammability and Explosibility


Safety Profile

A nuisance dust. When heated to decomposition it emits acrid smoke and irritating fumes.


Calcium stearate is used in oral pharmaceutical formulations and is generally regarded as a relatively nontoxic and nonirritant material.


Calcium stearate is stable and should be stored in a well-closed container in a cool, dry place.

Regulatory Status

GRAS listed. Included in the FDA Inactive Ingredients Database (oral capsules and tablets). Included in nonparenteral medicines licensed in the UK. Included in the Canadian List of Acceptable Non-medicinal Ingredients.

Who Evaluation

Evaluation year: 1985


1592-23-0 Relevant articles

Crystal forms of anhydrous calcium stearate derivable from calcium stearate monohydrate

Marjorie J Vold, Gopal S Hattiangdi 2, Robert D Vold

, Journal of Colloid Science Volume 4, Issue 2, April 1949, Pages 93-101

Calcium stearate VIA is believed to be the stable modification. Calcium stearate VIH is an anhydrous crystalline powder having the same X-ray diffraction pattern as calcium stearate monohydrate. Calcium stearate VIN is relatively amorphous with respect to interchain spacings although it exhibits a crystalline long spacing.

Dissolution study of salt of long chain fatty acids (Soap Scum) in surfactant solutions. Part I: Equilibrium dissolution

Soontravanich, Sukhwan,Lopez, Heyde E.,Scamehorn, John F.,Sabatini, David A.,Scheuing, David R.

, p. 367 - 372 (2010)

Dissolution of calcium salt of a long ch...

Characterisation of metal carboxylates by Raman and infrared spectroscopy in works of art

Otero, Vanessa,Sanches, Diogo,Montagner, Cristina,Vilarigues, Mrcia,Carlyle, Leslie,Lopes, Joo A.,Melo, Maria J.

, p. 1197 - 1206 (2015/02/19)

This work introduces the complementary u...

1592-23-0 Process route

stearic acid

stearic acid

calcium stearate

calcium stearate

Conditions Yield
With water; calcium oxide; In glycerol;
With Ca2H2O; In ethanol;
With calcium hydroxide; In ethanol; water; for 24h; pH=5.9;
With calcium hydroxide; at 70 - 150 ℃; for 1h; under 2250.23 Torr; Pressure; Temperature; Autoclave;
With calcium hydroxide; In methanol; water; at 65 ℃; for 0.00138889h; Industrial scale;
calcium(II) chloride dihydrate

calcium(II) chloride dihydrate

stearic acid

stearic acid

calcium stearate

calcium stearate

Conditions Yield
In water; at 70 ℃;

1592-23-0 Upstream products

  • 57-11-4

    stearic acid

1592-23-0 Downstream products

  • 142-17-6

    calcium oleate