Mai ƙira Kyakkyawan Farashin Stearic acid CAS: 57-11-4

Mai ƙera Kyakkyawan Farashin Stearic Acid CAS:57-11-4 Fitaccen Hoton

taƙaitaccen bayanin:

Stearic acid: (ma'auni na masana'antu) Octadecanoic acid, C18H36O2, ana samar da shi ta hanyar hydrolysis na mai kuma galibi ana amfani dashi a cikin samar da stearate.
Stearic Acid-829 Stearic acid, Stearic acid shine tsayayyen fatty acid da aka samo daga dabbobin dabba da kayan lambu, manyan abubuwan da ke cikin su sune stearic acid (C18H36O2) da palmitic acid (C16H32O2).
Wannan samfurin fari ne ko fari kamar foda ko crystalline wuya block, profile yana da microstrip luster lafiya allura crystal;Yana da ɗan wari kama da maiko kuma ba shi da ɗanɗano.Wannan samfurin yana narkewa a cikin chloroform ko diethyl ether, narkar da shi a cikin ethanol, kusan marar narkewa a cikin ruwa.Wurin daskarewa Wurin daskarewa (Shafi Ⅵ D) na samfurin bazai zama ƙasa da 54℃ ba.Darajar iodine darajar iodine na wannan samfurin (Shafi Ⅶ H) bai wuce 4. Ƙimar Acid (Shafi Ⅶ H) na wannan samfurin ya fito daga 203 zuwa 210. Stearate yana amsawa tare da magnesium da calcium ions don samar da magnesium stearate da calcium stearate. (fararen hazo)
Stearic acid CAS 57-11-4
Sunan samfur: Stearic acid

Saukewa: 57-11-4

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Makamantu

ACIDUM STEARICUM 50; CETYLAACETIC ACID; FEMA 3035; CARBOXYLIC ACID C18;C18;C18:0 FATTY ACID;hystrene5016;hystrene7018

Aikace-aikace na Stearic acid

Stearic acid, (jin masana'antu) Stearic acid yana ɗaya daga cikin manyan fatty acid masu tsayi da yawa waɗanda suka ƙunshi mai da mai.Ana gabatar da shi a cikin kitsen dabbobi, mai da wasu nau'ikan mai da kayan lambu da kuma nau'in glycerides.Wadannan mai, bayan hydrolysis, suna samar da stearic acid.
Stearic acid fatty acid ne wanda yake da yawa a cikin yanayi kuma yana da kaddarorin sinadarai na carboxylic acid.Kusan kowane nau'in mai da mai suna ɗauke da takamaiman adadin stearic acid tare da abun ciki a cikin kitsen dabba yana da girma.Misali, abun ciki a cikin man shanu zai iya kaiwa zuwa 24% yayin da abun ciki a cikin man kayan lambu yana da ƙarancin dangi tare da ƙimar man shayin shine 0.8% kuma mai a cikin dabino shine 6%.Koyaya, abun ciki a cikin koko zai iya kaiwa sama da 34%.

Akwai manyan hanyoyi guda biyu don samar da stearic acid na masana'antu, wato juzu'i da hanyar matsawa.Add da bazuwar wakili zuwa hydrogenated man fetur, sa'an nan kuma hydrolyzes don ba da danyen acid fatty, ci gaba ta hanyar wanka da ruwa, distillation, bleaching don samun ƙãre kayayyakin da glycerol a matsayin byproduct.
Yawancin masana'antun gida suna amfani da kitsen dabbobi don samarwa.Wasu nau'ikan fasahar kera za su haifar da rashin kammala narkar da fatty acid wanda ke samar da wari mai ban sha'awa a lokacin sarrafa filastik da yanayin zafi.Ko da yake waɗannan warin ba su da guba amma za su yi wani tasiri akan yanayin aiki da yanayin yanayi.Yawancin nau'in stearic acid da aka shigo da shi yana ɗaukar man kayan lambu azaman albarkatun ƙasa, hanyoyin samarwa sun fi ci gaba;da samar da stearic acid ne na barga yi, kyau lubrication dukiya da ƙasa da wari a cikin aikace-aikace.
Stearic acid ne yafi amfani ga samar da stearates kamar sodium stearate, magnesium stearate, alli stearate, gubar stearate, aluminum stearate, cadmium stearate, baƙin ƙarfe stearate, da potassium stearate.Gishirin sodium ko potassium na stearic acid shine bangaren sabulu.Ko da yake sodium stearate yana da ƙarancin lalatawa fiye da sodium palmitate, amma kasancewarsa na iya ƙara taurin sabulu.
Ɗauki man shanu a matsayin ɗanyen abu, bi ta sulfuric acid ko hanyar da aka matsa don bazuwa.Abubuwan fatty acid na farko sun kasance suna ƙarƙashin hanyar matsa lamba na ruwa don cire palmitic acid da oleic acid a 30 ~ 40 ℃, sannan a narkar da su a cikin ethanol, sannan ƙari na barium acetate ko magnesium acetate wanda ke haɓaka stearate.Sa'an nan kuma ƙara dilute sulfuric acid don samun free stearate acid, tace a dauka, da kuma sake-crystallize a cikin ethanol don samun tsarki stearic acid.