Lebitso la Senyesemane | Sodium stearate |
Nomoro ea CAS | 822-16-2 |
Mokhoa oa limolek'hule | C18H35NaO2 |
Boima ba molek'hule | 306.45907 |
Nomoro ea EINECS | 212-490-5 |
Sebaka se qhibilihang ke 270 °C | |
Boima ba 1.07 g/cm3 | |
Maemo a polokelo | 2-8°C |
Solubility | E qhibiliha hanyane ka metsing le ka har'a ethanol (liperesente tse 96). |
Sebopeho | Phofo |
Mmala | tšoeu |
Ho qhibiliha ha metsi | E qhibiliha ka metsing a batang le a chesang |
Botsitso | E tsitsitseng, e sa lumellaneng le lisebelisoa tse matla tsa oxidizing. |
Bonderlube235;flexichemb;prodhygine;stearatedesodium;asiti ea stearic, letsoai la sodium, motsoako oa ketane ea mafura a stearic le ea palemitic;NatriumChemicalbookstearat;Octadecanoicacid sodium letsoai, Stearicacidsodium letsoai;STEARICACID,SODIUMSALT,96%,MIXTUREOFSTEARICANDPALMITICFATTYCHAIN
Sodium stearate ke phofo e tšoeu, e qhibilihang hanyenyane metsing a batang, 'me e qhibiliha ka potlako metsing a chesang,' me ha e phatsime ka mor'a ho pholile ka tharollo ea sesepa e chesang haholo.E na le emulsifying e ntle haholo, e phunyeletsang le matla a ho thibela, e na le maikutlo a mafura, 'me e na le monko o mafura.E qhibiliha habonolo metsing a chesang kapa a tahi, 'me tharollo ke alkaline ka lebaka la hydrolysis.
Tšebeliso e ka sehloohong ea sodium stearate: thickener;emulsifier;dispersant;sekhomaretsi;corrosion inhibitor 1. Sesepa: se sebedisoang ho laola foam nakong ya ho ritsa.
2. Emulsifier kapa dispersant: e sebelisoa bakeng sa emulsification ea polymer le antioxidant.
3. Corrosion inhibitor: E na le thepa e sireletsang filiming ea liphutheloana tsa sehlopha.
4. Litlolo: gel ea ho kuta, sekhomaretsi se bonaletsang, joalo-joalo.
5. Sekhomaretsi: se sebelisoa e le sekhomaretsi sa tlhaho ho peista pampiri.
Sodium stearate ke letsoai la sodium la stearic acid, le tsejoang hape e le sodium octadecate, e leng ntho e sebelisoang ka tloaelo ea anionic surfactant le karolo ea mantlha ea sesepa.Karolo ea hydrocarbyl ka har'a molek'hule ea sodium stearate ke sehlopha sa hydrophobic, 'me karolo ea carboxyl ke sehlopha sa hydrophilic.Ka metsing a sesepa, sodium stearate e teng ka har'a li-micelles.Li-micelles li chitja 'me li entsoe ka limolek'hule tse ngata.Lihlopha tsa hydrophobic li ka hare 'me li kopantsoe hammoho ke matla a van der Waals,' me lihlopha tsa hydrophilic li ka ntle 'me li ajoa holim'a li-micelles.Li-micelles li qhalakanngoa ka metsing, 'me ha li kopana le matheba a oli a sa qhibilihisitsoeng ke metsi, oli e ka qhalakanngoa ka marotholi a matle a oli.Sehlopha sa hydrophobic sa sodium stearate se qhibiliha ka har'a oli, ha sehlopha sa hydrophilic Se Ekelitsoe ka metsing bakeng sa ho silafala.Ka metsing a thata, li-ion tsa stearate li kopana le li-ion tsa calcium le magnesium ho etsa calcium e sa qhibiliheng ka metsing le letsoai la magnesium, ho fokotsa ho hloekisa.Ntle le sodium stearate, sesepa e boetse e na le sodium palmitate CH3(CH2)14COONa le matsoai a sodium a mafura a mang a acid (C12-C20).