Methyl Paraben｜99-76-3

Methyl paraben, ma le mEthyl Paraben, o se tasi o parabens, o se faʻasao faʻatasi ma le fua faʻasolosolo CH3(C6H4(OH)COO). O le methyl ester o le p-hydroxybenzoic acid.

natura: se pa'epa'e tioata pa'epa'e po'o se tioata tioata. 115-118 ° C mea fa'afefete, mea fa'apuna, 297-298 ° C. Soluble i le ethanol, ethyl ether ma le acetone, micro-soluble i le vai, chloroform, carbon disulfide ma petroleum ether. O sina manogi fa'apitoa ma le tofo, sina tofo oona, Zhuo Ma.

Sauniuniga: p-hydroxybenzoic acid ma le ethanol i le i ai o le sulfuric acid catalyst mo le esterification, esterification i totonu o le vai pe a maeʻa le faʻamaʻi, ona e ala lea i se faamama, i oloa pikiina. Faʻaaoga: mea fa'aletino. Mo Preservatives, antimicrobial agent, faʻaaogaina i meaʻai, cosmetics ma pharmaceuticals. Fa'aaoga fo'i mo su'esu'ega o mea fa'aola. O oloa i luga o le limu, fefete ma siama ei ai aafiaga antibacterial lautele, fefete ma limu i le matafaioi o se malosi, ae maise lava mo siama Gram-negative bacilli ma le matafaioi a Lactobacillus matitiva. Mea'ai ma vaila'au fa'asao lelei fungicides.