Names
Preferred IUPAC name
Identifiers
ChEBI
ChemSpider
ECHA InfoCard
100.011.354
EC Number
UNII
InChI=1S/C18H36O2.Na/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2-17H2,1H3,(H,19,20);/q;+1/p-1
Y Key: RYYKJJJTJZKILX-UHFFFAOYSA-M
Y InChI=1/C18H36O2.Na/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2-17H2,1H3,(H,19,20);/q;+1/p-1
Key: RYYKJJJTJZKILX-REWHXWOFAA
[Na+].[O-]C(=O)CCCCCCCCCCCCCCCCC
Properties
C 18 H 35 Na O 2
Molar mass
306.466 g·mol−1
Appearance
white solid
Odor
slight, tallow-like odor
Density
1.02 g/cm3
Melting point
245 to 255 °C (473 to 491 °F; 518 to 528 K)
soluble
Solubility
slightly soluble in ethanediol
Hazards
NFPA 704 (fire diamond)
Flash point
176 °C (349 °F; 449 K)
Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
Sodium stearate (IUPAC : Sodium Octadecanoate ) 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.[1]
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Use
Having the characteristics of soaps , sodium stearate has both hydrophilic and hydrophobic parts, a carboxylate and a long hydrocarbon chain. 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. The tail part dissolves the grease or dirt and forms the micelle. 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.
Production
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:
(C18 H35 O2 )3 C3 H5 + 3 NaOH → C3 H5 (OH)3 + 3 C18 H35 O2 Na
Purified sodium stearate can be made by neutralizing stearic acid with sodium hydroxide.
C17 H35 COOH+NaOH→C17 H35 COONa+H2 O
References
^ Klaus Schumann, Kurt Siekmann, "Soaps" in Ullmann's Encyclopedia of Industrial Chemistry , 2005, Wiley-VCH, Weinheim. doi :10.1002/14356007.a24_247
External links
Salts and covalent derivatives of the
stearate ion
HCH3(CH2)16CO2
He
LiCH3 (CH2 )16 CO2
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Be(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">2</sub></span>
B(CH3(CH2)16CO2)<sub>3</sub>
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">NH<sub class="template-chem2-sub">4</sub>CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub></span>,
-O-
Ne
NaCH3 (CH2 )16 CO2
Mg(CH3 (CH2 )16 CO2 )2
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Al(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Si(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">4</sub></span>
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">P(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Ar
KCH3 (CH2 )16 CO2
Ca(CH3 (CH2 )16 CO2 )2
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Sc(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Ti
V
Cr(CH3(CH2)16CO2)<sub>2</sub>
Mn
Fe(CH3(CH2)16CO2)<sub>2</sub>Fe(CH3(CH2)16CO2)3
Co(CH3 (CH2 )16 CO2 )2
Ni(CH3 (CH2 )16 CO2 )2
Cu(CH3 (CH2 )16 CO2 )2
Zn(CH3 (CH2 )16 CO2 )2
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Ga(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Ge
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">As(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Kr
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">RbCH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub></span>
Sr(CH3 (CH2 )16 CO2 )2
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Y(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Zr(CH3 (CH2 )16 CO2 )3
Nb
Tc
Ru
Rh
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Pd(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">2</sub></span>
AgCH3 (CH2 )16 CO2
Cd(CH3 (CH2 )16 CO2 )2
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">In(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Sn
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Sb(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Te
Xe
CsCH3 (CH2 )16 CO2
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Ba(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">2</sub></span>
*
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Lu(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Hf
Ta
Re
Os
Ir
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">AuCH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub></span>
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Hg<sub class="template-chem2-sub">2</sub>(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">2</sub></span>, Hg(CH3 (CH2 )16 CO2 )2
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">TlCH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub></span>
Pb(CH3 (CH2 )16 CO2 )2
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Bi(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Po
At
Rn
Fr
Ra
**
Lr
Rf
Db
Sg
Bh
Hs
Mt
Ds
Rg
Cn
Nh
Fl
Mc
Lv
Ts
Og
*
La(CH3 (CH2 )16 CO2 )3
Ce(CH3 (CH2 )16 CO2 )3
Pr
Nd
Pm
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Sm(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Eu(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Gd(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Tb
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Dy(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Ho(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
Er
Tm
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Yb(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
**
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Ac(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">3</sub></span>
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">Th(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">4</sub></span>
Pa
<link href="mw-data:TemplateStyles:r1123817410" rel="mw-deduplicated-inline-style"/><span class="chemf nowrap">UO<sub class="template-chem2-sub">2</sub>(CH<sub class="template-chem2-sub">3</sub>(CH<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">16</sub>CO<sub class="template-chem2-sub">2</sub>)<sub class="template-chem2-sub">2</sub></span>
Np
Pu
Am
Cm
Bk
Cf
Es
Fm
Md
No
This page was last edited on 20 March 2024, at 06:26