Sodium stearate

Sodium stearate Basic information
Description References
Product Name:Sodium stearate
Synonyms:bonderlube235;flexichemb;prodhygine;stearatedesodium;stearicacid,sodiumsalt,mixtureofstearicandpalmiticfattychain;Octadecanoic acid sodium salt, Stearic acid sodium salt;STEARIC ACID, SODIUM SALT, 96%, MIXTURE OF STEARIC AND PALMITIC FATTY CHAIN;SODIUMSTEARATE,PURE
CAS:822-16-2
MF:C18H35NaO2
MW:306.45907
EINECS:212-490-5
Product Categories:Food additives;emulsifier;metal carboxylate;Anionic Surfactants;Carboxylate (Surfactants);Functional Materials;Surfactants;bc0001;822-16-2
Mol File:822-16-2.mol
Sodium stearate Structure
Sodium stearate Chemical Properties
Melting point 270 °C
density 1.07 g/cm3
storage temp. 2-8°C
solubility Slightly soluble in water and in ethanol (96 per cent).
form Powder
color white
Odorwh. fine powd., fatty (tallow) odor
Water Solubility SOLUBLE IN COLD AND HOT WATER
Merck 14,8678
BRN 3576813
Exposure limitsACGIH: TWA 10 mg/m3; TWA 3 mg/m3
Stability:Stable. Incompatible with strong oxidizing agents.
InChIKeyRYYKJJJTJZKILX-UHFFFAOYSA-M
LogP8.216 (est)
CAS DataBase Reference822-16-2(CAS DataBase Reference)
EPA Substance Registry SystemSodium stearate (822-16-2)
Safety Information
Safety Statements 24/25
RIDADR 3077
WGK Germany 1
RTECS WI4725000
TSCA Yes
HazardClass 9
PackingGroup III
HS Code 29157090
Hazardous Substances Data822-16-2(Hazardous Substances Data)
MSDS Information
ProviderLanguage
Stearic acid sodium saltEnglish
SigmaAldrichEnglish
ACROSEnglish
ALFAEnglish
Sodium stearate Usage And Synthesis
DescriptionAs the sodium salt of stearic acid, sodium stearate is a highly functional material that can be applied in various fields, especially in cosmetic formulations, where it is effective to stabilize emulsions like lotions, make products thicker, more viscous. It is also widely used in the deodorant produce, in which it can serve as a major constituent of soap produced by saponification of oils and fats. Besides, it can be applied in the production of latex paints, rubbers, inks and also a component of some food additives and flavorings.
The purified sodium stearate can be synthesized by neutrallzation reaction of stearic acid and sodium hydroxide.
Referenceshttps://en.wikipedia.org/wiki/Sodium_stearate
http://www.tomsofmaine.com/ingredients/overlay/sodium-stearate
https://www.reference.com/science/uses-sodium-stearate-d24da30b6b85aa51#
DescriptionSodium stearate is the sodium salt of stearic acid. This white solid is the most common soap. It is found in many types of solid deodorants, rubbers, latex paints, and inks. It is also a component of some food additives and food flavorings.
Chemical Propertieswhite to off-white powder
Chemical PropertiesSodium stearate, NaC18H35O2, white solid, soluble, froth or foam upon shaking the water solution (soap), formed by reaction of NaOH and stearic acid (in alcoholic solution) and evaporating. Used as a source of stearate.
UsesPharmaceutic aid (emulsifying and stiffening agent). In glycerol suppositories; also in toothpaste; as waterproofing agent.
Usesβ-Lactamase inhibitor
UsesCharacteristic of soaps, sodium stearate has both hydrophilic and hydrophobic parts, the carboxylate and the long hydrocarbon chain, respectively. These two chemically different components induce the formation of micelles, which present the hydrophilic heads outwards and their hydrophobic (hydrocarbon) tails inwards, providing a lipophilic environment for hydrophobic compounds. It is also used in the pharmaceutical industry as a surfactant to aid the solubility of hydrophobic compounds in the production of various mouth foams.
UsesSodium Stearate is the sodium salt of stearic acid. it functions as a binder, emulsifier, and anticaking agent. it is used as a plasticizer in chewing gum base.
Usessodium stearate is a fatty acid used as a waterproofing agent. Sodium stearate is one of the least allergy-causing sodium salts of fatty acids. It is non-irritating to the skin.
Production MethodsSodium stearate is produced as a major component of soap upon saponification of oils and fats. The percentage of the sodium stearate depends on the ingredient fats. Tallow is especially high in stearic acid content (as the triglyceride), whereas most fats only contain a few percent. The idealized equation for the formation of sodium stearate from stearin (the triglyceride of stearic acid) follows :
(C18H35O2)3C3H→ C3H5(OH)+ 3 C17H35CO2Na
Purified sodium stearate can be made by neutralizing stearic acid with sodium hydroxide.
DefinitionChEBI: An organic sodium salt comprising equal numbers of sodium and stearate ions.
Safety ProfilePoison by intravenous route. When heated to decomposition it emits toxic fumes of Na2O.
Purification MethodsIt is better to prepare it by adding a slight excess of octadecanoic acid to ethanolic NaOH, evaporating and extracting the residue with dry Et2O. [Beilstein 2 III 1003.]
Sodium stearate Preparation Products And Raw materials
Raw materialsSodium hydroxide–>Stearic acid–>Butyl stearate
Preparation ProductsCalcium carbonate–>Calcium stearate–>alpha-d-Glucopyranoside, beta-d-fructofuranosyl, octadecanoate–>Glyceryl monostearate–>water-proofing agnet AC–>Dibasic Lead Stearate–>MANGANESE STEARATE–>STEARIC ANHYDRIDE–>Cadmium stearate–>Glycerol tristearate

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