Qhov sib txawv tseem ceeb ntawm parabens sulfates thiab phthalates yog tias parabens yog cov organic tebchaw uas muaj ester pawg thiab hydroxyl pawg thaum sulfates yog cov ntsev inorganic, thiab phthalates yog cov neeg tuag.
Parabens thiab phthalates yog cov organic tebchaw. Ob qho no yog esters; parabens muaj ib pawg ester ib molecule thaum phthalates muaj ob pawg ester ib molecule. Sulfates, ntawm qhov tod tes, yog cov tshuaj inorganic uas muaj sulfate anion.
YParabens yog dab tsi?
Parabens yog cov organic tebchaw uas muaj ib pawg ester ua haujlwm thiab ib pawg hydroxyl. Cov no yog cov sib xyaw ua ke uas yog siv los ua cov tshuaj tua kab mob hauv kev lag luam tshuaj, kev lag luam tshuaj pleev ib ce, thiab lwm yam. Cov qauv paraben muaj lub nplhaib benzene txuas nrog ester pawg thiab ib pawg hydroxyl ntawm qhov chaw para. Yog li ntawd, peb tuaj yeem hu cov tshuaj no ua esters ntawm para-hydroxybenzoic acid.
Cov khoom lag luam muaj parabens yog cov khoom siv hluavtaws. Txawm li cas los xij, muaj qee cov ntaub ntawv paraben uas zoo ib yam rau cov parabens peb tuaj yeem pom hauv qhov xwm txheej. Txoj kev tsim cov tshuaj parabens yog los ntawm esterification ntawm para-hydroxybenzoic acid nrog cawv xws li methanol, ethanol, n-propanol, thiab lwm yam.
Nyob hauv ntau hom qauv, parabens yog cov tshuaj tua kab mob zoo. Cov tshuaj no thiab lawv cov ntsev muaj txiaj ntsig zoo vim lawv cov kab mob bactericidal thiab fungicidal. Peb tuaj yeem pom cov khoom sib xyaw no hauv cov tshuaj zawv plaub hau, cov khoom lag luam muag moisturizers, shaving gels, lubricants tus kheej, pleev, thiab tshuaj txhuam hniav. Qee zaum, peb tuaj yeem siv cov khoom sib xyaw ua zaub mov noj thiab.
YSulphate yog dab tsi?
Sulfates yog cov ntsev inorganic ntsev uas muaj sulfate anion. Cov tshuaj formula ntawm sulfate anion yog SO42- Nws yog polyatomic anion tsuas muaj leej faj thiab oxygen atoms. Muaj ntau cov tebchaw uas muaj sulfate anions, nrog rau cov ntsev, kua qaub derivatives, peroxides, thiab lwm yam ua ke, tag nrho cov tebchaw no hu ua sulfates.
Cov sulfate anion muaj lub hauv paus sulfur atom txuas rau plaub lub atoms oxygen. Lub geometry ntawm no anion yog tetrahedral, thiab nws muaj -2 hluav taws xob nqi. Lub xeev oxidation ntawm sulfur atom yog +6. Sulfate anion yog lub hauv paus conjugate ntawm bisulfate ion. Peb tuaj yeem tau txais sulfates los ntawm ntau txoj kev. Piv txwv li, hlau sulfates tsim thaum hlau yog reacted nrog sulfuric acid. Ib yam li ntawd, oxidation ntawm sulfides thiab sulfites muab sulfates.
YPhthalates yog dab tsi?
Phthalates yog cov organic tebchaw uas muaj ob pawg ester ua haujlwm rau ib lub molecule. Cov no kuj muaj npe hu ua phthalate esters. Qhov no yog vim hais tias ib qho phthalate molecule muaj ob pawg ester nyob rau hauv ortho txoj hauj lwm ntawm lub nplhaib benzene. Yog li, phthalates yog cov tshuaj tua kab mob. Tsis tas li ntawd, cov ester pawg no tuaj yeem muaj pawg alkyl lossis aryl pawg.
Phthalates tseem ceeb yog cov yas yas. Plasticizers yog cov khoom siv ntxiv rau cov yas los ua kom qhov yooj yim, pob tshab, durability, thiab lwm yam.ntawm cov ntaub ntawv yas. Feem ntau, phthalates yog siv los muag PVC. Txawm li cas los xij, muaj ntau txoj hauv kev lom neeg rau phthalates hauv khw tam sim no. Txawm li cas los xij, cov ntaub ntawv lom neeg no kim heev, thiab lawv feem ntau tsis sib haum nrog cov khoom yas.
Qhov txawv ntawm Parabens Sulfates thiab Phthalates yog dab tsi?
Parabens thiab phthalates yog cov organic tebchaw, thaum sulfates yog cov tshuaj inorganic. Qhov sib txawv tseem ceeb ntawm parabens sulfates thiab phthalates yog tias parabens yog cov organic tebchaw uas muaj ester pawg thiab hydroxyl pawg thaum sulfates yog inorganic ntsev thiab phthalates yog diesters. Nyob rau hauv lwm yam lus, parabens yog cov organic tebchaw nrog ester thiab hydroxyl pawg thaum sulfates yog inorganic ntsev nrog sulfate anion thiab phthalates yog cov organic tebchaw nrog ob pawg ester ib molecule.
Hauv qab infographic teev ntau qhov sib txawv ntawm parabens sulfates thiab phthalates.
Summary – Parabens Sulfates vs Phthalates
Parabens thiab phthalates yog cov organic tebchaw, thaum sulfates yog cov tshuaj inorganic. Qhov sib txawv tseem ceeb ntawm parabens sulfates thiab phthalates yog tias parabens yog cov organic tebchaw uas muaj ester pawg thiab hydroxyl pawg thaum sulfates yog inorganic ntsev thiab phthalates yog diesters.
Image Courtesy:
1. "Paraben-2D-skeletal" (Public Domain) ntawm Commons Wikimedia
2. "Sulfate-ion-2D-dimensions" Los ntawm Benjah-bmm27 - Tus kheej ua haujlwm (Public Domain) ntawm Commons Wikimedia
3. "Phthalates" Los ntawm Tus Neeg Siv: Bryan Derksen - Tus kheej ua haujlwm (Public Domain) ntawm Commons Wikimedia
