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CALCIUM STEARATE

Formula : Ca (C 17 H 35 COO) 2

Physical form: powder, granules, flakes (flakes).

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.

CALCIUM STEARATE
Packaging
15 kg.

DESCRIPTION
Formula : Ca (C 17 H 35 COO) 2

Physical form: powder, granules, flakes (flakes).

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.
Calcium stearate is a finely dispersed white powder with a developed surface that provides hydrophobic properties of paintwork varnish.

Production method

Calcium stearate occurs by the reaction of interaction of stearic acid with calcium hydroxide during heating and vigorous stirring.

Application:

- As a heat stabilizer in the manufacture of PVC products, and also as an internal lubricant.
- As a stabilizer / lubricant in the production of polyolefin compounds, colored and white polymer superconcentrates.

- As a water repellant, which, when added to dry systems, provides the water-repellent properties of the surface of the hardened solution and prevents its capillary water permeability without reducing air permeability.
Particularly suitable for façade and wet room materials.

- As an additive for waterproofing materials.

- Reduces destruction, pollution and efflorescence of facade materials.

- Increases the mobility of concrete and plaster mixes.

- Reduces the effect of acids on the hardened solution. 

- Reduce the consumption of paints and varnishes and impregnating materials.


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. 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.

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.
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.
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.

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