Sodium Stearate - Wikipedia

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• 1 Production
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• 3 References
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Appearance move to sidebar hide From Wikipedia, the free encyclopedia Sodium stearate

Names
Preferred IUPAC name Sodium octadecanoate
Identifiers
CAS Number	822-16-2 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:132109 N
ChemSpider	12639 Y
ECHA InfoCard	100.011.354
EC Number	212-490-5
PubChem CID	2724691
UNII	QU7E2XA9TG Y
CompTox Dashboard (EPA)	DTXSID9027318
InChI 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 YKey: 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-1Key: RYYKJJJTJZKILX-REWHXWOFAA
SMILES [Na+].[O-]C(=O)CCCCCCCCCCCCCCCCC
Properties
Chemical formula	C18H35NaO2
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)
Solubility in water	soluble
Solubility	slightly soluble in ethanediol
Hazards
NFPA 704 (fire diamond)	2 1 0
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). N verify (what is YN ?) Infobox references

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]

Production

[edit]

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:[2]

(C17H35CO2)3C3H5 + 3 NaOH → C3H5(OH)3 + 3 C17H35CO2Na

Sodium stearate can also be made by neutralizing stearic acid with sodium hydroxide.[2]

C17H35COOH + NaOH → C17H35COONa + H2O

Safety and environmental considerations

[edit]

Stearate salts, as found in many commercial soaps are of low toxicity, hence their wide use in domestic settings. They do pose some problems for wastewater treatment as they biodegrade relatively slowly and impose a high biological oxygen demand.[1]

References

[edit]

1. ^ a b Schumann, Klaus; Siekmann, Kurt (2000). "Soaps". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a24_247. ISBN 978-3-527-30385-4.
2. ^ a b Snell, Foster Dee (1942). "Soap and Glycerol". Journal of Chemical Education. 19 (4): 172. Bibcode:1942JChEd..19..172S. doi:10.1021/ed019p172.

External links

[edit]

• Safety Data

v t e Sodium compounds
Inorganic	Halides NaF NaHF2 NaCl NaBr NaI NaAt Chalcogenides NaO3 NaO2 Na2O Na2O2 NaOH NaOD Na2S NaSH Na2Se NaSeH Na2Te NaHTe Na2Po Pnictogenides Na3N NaN3 NaNH2 NaN2H3 Na3P Na3As Na3Sb Oxyhalides NaClO NaClO2 NaClO3 NaClO4 NaBrO NaBrO2 NaBrO3 NaBrO4 NaIO NaIO3 NaIO4 Oxychalcogenides Na2SO3 Na2SO4 NaHSO3 NaHSO4 Na2S2O3 Na2S2O4 Na2S2O5 Na2S2O6 Na2S2O7 Na2S2O8 Na2S4O6 Na2SeO3 Na2SeO4 NaHSeO3 Na2TeO3 Oxypnictogenides NaNO2 NaNO3 Na2N2O2 Na2N2O3 NaH2PO4 NaPO3 Na2HPO4 NaPO2H2 Na2HPO3 Na2PO3F Na3PS2O2 Na3PO4 Na5P3O10 Na4P2O7 Na2H2P2O7 Na3AsO3 Na3AsO4 Na2HAsO4 NaH2AsO4 NaSbO3 Metalates NaAlH4 NaAlO2 Na3AlF6 NaAl(SO4)2 NaAuCl4 Na2TiF6 NaBiO3 NaCoO2 NaMnO4 NaReO4 NaTcO3 NaTcO4 NaVO3 Na2CrO4 Na2Cr2O7 Na2Cr3O10 Na2[Fe(CO)4] Na2MnO4 Na2MoO4 Na3IrCl6 Na2PtCl6 Na2TiO3 Na2U2O7 Na2WO4 Na2Zn(OH)4 Na3VO4 Na6V10O28 Na4Fe(CN)6 Na3Fe(CN)6 Na3Fe(C2O4)3 Na3[Co(NO2)6] Na2PdCl4 Others NaSbF6 NaAsF6 NaBH4 NaBH3(CN) NaBO2 Na2B4O7 Na2B2O9 Na2B8O13 NaCN NaCNO NaH NaHCO3 Na4XeO6 NaHXeO4 NaOCN NaSCN Na2CO3 Na2C2O4 Na2C3S5 Na2GeO3 Na2He Na2xSi3yO2y+x (Na2SiO3 Na6Si2O7 Na4SiO4) Na2SiF6 NaNSi2(CH3)6
Organic	CH3ONa C2H5ONa HCOONa C2H5COONa C3H7COONa Na2C4H4O6 C4H5NaO6 NaCH3COO NaC6H5CO2 NaC6H4(OH)CO2 NaC12H23O2 NaC10H8 Na2[Fe[CN5]NO] C6H16AlNaO4 NaC6H7O6 C5H8NO4Na C6H5Na C4H9Na NaC5H5 C15H31COONa C17H33COONa C18H35O2Na C164H256O68S2Na2

v t e Salts and covalent derivatives of the stearate ion

HCH3(CH2)16CO2 He LiCH3(CH2)16CO2 Be(CH3(CH2)16CO2)2 B(CH3(CH2)16CO2)3 C NH4CH3(CH2)16CO2, -O- F Ne NaCH3(CH2)16CO2 Mg(CH3(CH2)16CO2)2 Al(CH3(CH2)16CO2)3 Si(CH3(CH2)16CO2)4 P(CH3(CH2)16CO2)3 S Cl Ar KCH3(CH2)16CO2 Ca(CH3(CH2)16CO2)2 Sc(CH3(CH2)16CO2)3 Ti V Cr(CH3(CH2)16CO2)2 Mn Fe(CH3(CH2)16CO2)2Fe(CH3(CH2)16CO2)3 Co(CH3(CH2)16CO2)2 Ni(CH3(CH2)16CO2)2 Cu(CH3(CH2)16CO2)2 Zn(CH3(CH2)16CO2)2 Ga(CH3(CH2)16CO2)3 Ge As(CH3(CH2)16CO2)3 Se Br Kr RbCH3(CH2)16CO2 Sr(CH3(CH2)16CO2)2 Y(CH3(CH2)16CO2)3 Zr(CH3(CH2)16CO2)3 Nb Mo Tc Ru Rh Pd(CH3(CH2)16CO2)2 AgCH3(CH2)16CO2 Cd(CH3(CH2)16CO2)2 In(CH3(CH2)16CO2)3 Sn Sb(CH3(CH2)16CO2)3 Te I Xe CsCH3(CH2)16CO2 Ba(CH3(CH2)16CO2)2 * Lu(CH3(CH2)16CO2)3 Hf Ta W Re Os Ir Pt AuCH3(CH2)16CO2 Hg2(CH3(CH2)16CO2)2, Hg(CH3(CH2)16CO2)2 TlCH3(CH2)16CO2 Pb(CH3(CH2)16CO2)2 Bi(CH3(CH2)16CO2)3 Po At Rn Fr Ra ** Lr Rf Db Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og   * La(CH3(CH2)16CO2)3 Ce(CH3(CH2)16CO2)3 Pr Nd Pm Sm(CH3(CH2)16CO2)3 Eu(CH3(CH2)16CO2)3 Gd(CH3(CH2)16CO2)3 Tb Dy(CH3(CH2)16CO2)3 Ho(CH3(CH2)16CO2)3 Er Tm Yb(CH3(CH2)16CO2)3 ** Ac(CH3(CH2)16CO2)3 Th(CH3(CH2)16CO2)4 Pa UO2(CH3(CH2)16CO2)2 Np Pu Am Cm Bk Cf Es Fm Md No

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