| Identification | More | [Name]
Sodium stearate | [CAS]
822-16-2 | [Synonyms]
OCTADECANOIC ACID SODIUM SALT
SODIUM OCTADECANOATE
SODIUM STEARATE
STEARIC ACID SODIUM SALT
bonderlube235
flexichemb
prodhygine
stearatedesodium
stearicacid,sodiumsalt,mixtureofstearicandpalmiticfattychain
STEARIC ACID SODIUM
Sodium stearate, tech.
Sodiumstearate,tech.gr.
SODIUMSTEARATE,POWDER,NF
Natriumstearat
SODIUM STEARATE POWDER
Octadecanoic acid sodium salt, Stearic acid sodium salt
STEARIC ACID, SODIUM SALT, 96%, MIXTURE OF STEARIC AND PALMITIC FATTY CHAIN
SODIUMSTEARATE,PURE | [EINECS(EC#)]
212-490-5 | [Molecular Formula]
C18H35NaO2 | [MDL Number]
MFCD00036404 | [Molecular Weight]
306.46 | [MOL File]
822-16-2.mol |
| Chemical Properties | Back Directory | [Appearance]
white to off-white powder | [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 | [Odor]
wh. fine powd., fatty (tallow) odor | [Stability:]
Stable. Incompatible with strong oxidizing agents. | [Water Solubility ]
SOLUBLE IN COLD AND HOT WATER | [Merck ]
14,8678 | [BRN ]
3576813 | [Exposure limits]
ACGIH: TWA 10 mg/m3; TWA 3 mg/m3 | [InChIKey]
RYYKJJJTJZKILX-UHFFFAOYSA-M | [LogP]
8.216 (est) | [Uses]
sodium 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. | [CAS DataBase Reference]
822-16-2(CAS DataBase Reference) | [EPA Substance Registry System]
822-16-2(EPA Substance) |
| Safety Data | Back Directory | [Safety Statements ]
S24/25:Avoid contact with skin and eyes . | [RIDADR ]
3077 | [WGK Germany ]
1
| [RTECS ]
WI4725000
| [TSCA ]
Yes | [HazardClass ]
9 | [PackingGroup ]
III | [HS Code ]
29157090 | [Safety Profile]
Poison by intravenous route. When heated to decomposition it emits toxic fumes of Na2O. | [Hazardous Substances Data]
822-16-2(Hazardous Substances Data) |
| Questions And Answer | Back Directory | [Description]
As 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.
| [References]
https://en.wikipedia.org/wiki/Sodium_stearate
http://www.tomsofmaine.com/ingredients/overlay/sodium-stearate
https://www.reference.com/science/uses-sodium-stearate-d24da30b6b85aa51#
|
| Hazard Information | Back Directory | [Chemical Properties]
Sodium 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. | [Chemical Properties]
white to off-white powder | [Definition]
ChEBI: An organic sodium salt comprising equal numbers of sodium and stearate ions. | [Production Methods]
Sodium 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)3C3H5 → C3H5(OH)3 + 3 C17H35CO2Na
Purified sodium stearate can be made by neutralizing stearic acid with sodium hydroxide. | [Purification Methods]
It 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.] |
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