English npe | Sodium stearate |
CAS nr | 822-16-2 : kuv |
Cov mis mos molecular | C18H35NaO2 |
Molecular hnyav | 306.45907 ib |
EINECS Number | 212-490-5 : kuv |
Melting point 270 ° C | |
Qhov ceev 1.07 g / cm3 | |
Cia tej yam kev mob | 2-8 ° C |
Solubility | Me ntsis soluble hauv dej thiab hauv ethanol (96 feem pua). |
Daim ntawv | Hmoov |
Xim | dawb |
Dej solubility | Soluble nyob rau hauv dej txias thiab kub |
Kev ruaj ntseg | ruaj khov, incompatible nrog muaj zog oxidizing tus neeg sawv cev. |
Bonderlube235;flexichemb;prodhygine;stearatedesodium;stearicacid, sodium ntsev, sib tov ntawm stearicandpalmiticfattychain;NatriumChemicalbookstearat;Octadecanoicacidsodiumsalt, Stearicacidsodiumsalt;STEARICACID, SODIUMSALT, 96%, MIXTUREOFSTEARICANDPALMITICFATTYCHAIN
Sodium stearate yog hmoov dawb, me ntsis soluble nyob rau hauv dej txias, thiab sai soluble nyob rau hauv dej kub, thiab tsis crystallize tom qab txias nyob rau hauv ib tug heev concentrated kub xab npum tov.Nws muaj emulsifying zoo heev, nkag mus thiab detersive zog, muaj greasy xav, thiab muaj ib tug fatty tsw.Nws yooj yim soluble hauv dej kub lossis dej cawv, thiab cov tshuaj yog alkaline vim hydrolysis.
Kev siv tseem ceeb ntawm sodium stearate: thickener;emulsifier;dispersant;nplaum;corrosion inhibitor 1. Detergent: siv los tswj ua npuas ncauj thaum yaug.
2. Emulsifier lossis dispersant: siv rau polymer emulsification thiab antioxidant.
3. Corrosion inhibitor: Nws muaj cov khoom tiv thaiv hauv pawg ntim zaj duab xis.
4. Tshuaj pleev ib ce: shaving gel, pob tshab nplaum, thiab lwm yam.
5. Adhesive: siv los ua cov kua nplaum ntuj los muab daim ntawv.
Sodium stearate yog sodium ntsev ntawm stearic acid, tseem hu ua sodium octadecate, uas yog ib qho kev siv anionic surfactant thiab cov khoom tseem ceeb ntawm cov xab npum.Cov hydrocarbyl moiety nyob rau hauv sodium stearate molecule yog ib pab pawg neeg hydrophobic, thiab carboxyl moiety yog ib pawg hydrophilic.Hauv dej soapy, sodium stearate muaj nyob hauv micelles.Cov micelles yog spherical thiab tsim los ntawm ntau cov molecules.Cov pab pawg hydrophobic yog sab hauv thiab koom nrog ib leeg los ntawm van der Waals rog, thiab cov pab pawg hydrophilic yog sab nraud thiab faib rau saum npoo ntawm micelles.Cov micelles yog dispersed nyob rau hauv dej, thiab thaum ntsib cov dej-insoluble roj stains, cov roj yuav dispersed mus rau hauv nplua roj droplets.Cov pab pawg hydrophobic ntawm sodium stearate dissolves rau hauv cov roj, thaum pawg hydrophilic Suspended hauv dej rau decontamination.Nyob rau hauv cov dej nyuaj, stearate ions ua ke nrog calcium thiab magnesium ions los tsim cov dej-insoluble calcium thiab magnesium ntsev, txo cov detergency.Ntxiv rau sodium stearate, xab npum kuj tseem muaj sodium palmitate CH3 (CH2) 14COONa thiab sodium ntsev ntawm lwm cov fatty acids (C12-C20).