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2024-04-21T11:32:29Z

Marked this version for translation

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	'''Calcium stearate''' is a [[carboxylate]] salt of [[calcium]], classified as a calcium [[soap]]. The salt is a component of some [[lubricant]]s, [[surfactant]]s, as well as many foodstuffs. It is a white waxy powder.		'''Calcium stearate''' is a [[carboxylate]] salt of [[calcium]], classified as a calcium [[soap]]. The salt is a component of some [[lubricant]]s, [[surfactant]]s, as well as many foodstuffs. It is a white waxy powder.

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	==Production and occurrence==		==Production and occurrence==
	Calcium stearate is produced by heating [[stearic acid]] and [[calcium oxide]]:		Calcium stearate is produced by heating [[stearic acid]] and [[calcium oxide]]:
	:2 C<sub>17</sub>H<sub>35</sub>COOH + CaO → (C<sub>17</sub>H<sub>35</sub>COO)<sub>2</sub>Ca + H<sub>2</sub>O		:2 C<sub>17</sub>H<sub>35</sub>COOH + CaO → (C<sub>17</sub>H<sub>35</sub>COO)<sub>2</sub>Ca + H<sub>2</sub>O

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	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.		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.		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.

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	==Applications==		==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 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.
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	{{Calcium compounds}}		{{Calcium compounds}}
	{{Stearates}}		{{Stearates}}

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	{{二次利用\|date=8 March 2023}}		{{二次利用\|date=8 March 2023}}
	[[Category:Calcium compounds]]		[[Category:Calcium compounds]]

Fire: Created page with " {{chembox | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 476998540 | ImageFile =Stearic Acid Calcium Salt Structural Formula V.2.svg | ImageSize =250px | PIN =Calcium di(octadecanoate) | OtherNames =E470 |Section1={{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 14587 | ChEBI = 190296 | ChEMBL_Ref = {{ebicite|changed|EBI}} | ChEMBL = 2106092 | UNII_Ref = {{fdacite|correct|F..."

2024-04-21T11:21:31Z

Created page with "<languages /> <translate> {{chembox | Verifiedfields = changed | Watchedfields = changed | verifiedrevid = 476998540 | ImageFile =Stearic Acid Calcium Salt Structural Formula V.2.svg | ImageSize =250px | PIN =Calcium di(octadecanoate) | OtherNames =E470 |Section1={{Chembox Identifiers | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = 14587 | ChEBI = 190296 | ChEMBL_Ref = {{ebicite|changed|EBI}} | ChEMBL = 2106092 | UNII_Ref = {{fdacite|correct|F..."

New page

<languages />
<translate>
{{chembox
| Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 476998540
| ImageFile =Stearic Acid Calcium Salt Structural Formula V.2.svg
| ImageSize =250px
| PIN =Calcium di(octadecanoate)
| OtherNames =E470
|Section1={{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 14587
| ChEBI = 190296
| ChEMBL_Ref = {{ebicite|changed|EBI}}
| ChEMBL = 2106092
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 776XM7047L
| InChI = 1/2C18H36O2.Ca/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
| InChIKey = CJZGTCYPCWQAJB-NUQVWONBAL
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/2C18H36O2.Ca/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = CJZGTCYPCWQAJB-UHFFFAOYSA-L
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo =1592-23-0
| PubChem =15324
| SMILES = [Ca+2].[O-]C(=O)CCCCCCCCCCCCCCCCC.[O-]C(=O)CCCCCCCCCCCCCCCCC
}}
|Section2={{Chembox Properties
| C=36 | H=70 | Ca=1 | O=4
| Appearance = white to yellowish-white powder
| Density = 1.08 g/cm3
| MeltingPtC = 155
| MeltingPt_notes =
| BoilingPt =
| Solubility = 0.004 g/100 mL (15 °C)
| SolubleOther = soluble in hot [[pyridine]] slightly soluble in [[oil]] insoluble in [[ethanol|alcohol]], [[diethyl ether|ether]]
}}
|Section3={{Chembox Hazards
| MainHazards =
| FlashPt =
| AutoignitionPt =
| NFPA-H = 2
| NFPA-F = 1
| NFPA-R = 0
}}
}}

'''Calcium stearate''' is a [[carboxylate]] salt of [[calcium]], classified as a calcium [[soap]]. The salt is a component of some [[lubricant]]s, [[surfactant]]s, as well as many foodstuffs. It is a white waxy powder.

==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 (Ce De Candy)|Smarties]], [[jawbreakers]] and [[Spree (candy)|Spree]]s.
*It is a waterproofing agent for fabrics.
*A lubricant in pencils and crayons.
*A lubricant in the [[wire drawing|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. [[paving stone (flooring)|paver]] and block, as well as [[waterproof]]ing.
*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 [[defoamer]]s.
*[[Anticaking agent]] for drugs etc.

{{Calcium compounds}}
{{Stearates}}

{{二次利用|date=8 March 2023}}
[[Category:Calcium compounds]]
[[Category:Food additives]]
[[Category:Stearates]]
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Calcium stearate - Revision history

Fire: Marked this version for translation