Methyl Paraben｜99-76-3
Awọn ọja Apejuwe
Methyl paraben, tun mEthyl Paraben, ọkan ninu awọn parabens, jẹ olutọju pẹlu ilana kemikali CH3 (C6H4 (OH) COO). O jẹ methyl ester ti p-hydroxybenzoic acid.
Iseda: a funfun okuta lulú tabi kirisita. 115-118 ° C yo ojuami, farabale ojuami, 297-298 ° C. Soluble ni ethanol, ethyl ether ati acetone, micro-tiotuka ninu omi, chloroform, carbon disulfide ati epo ether. Kekere arodun pataki ati itọwo, adun kikoro die, Zhuo Ma.
Igbaradi: p-hydroxybenzoic acid ati ethanol ti o wa niwaju sulfuric acid ayase fun esterification, esterification ninu omi lẹhin ti pari ti crystallization, ki o si nipasẹ kan àlẹmọ, ni pickling awọn ọja.Lo.: Organic agbedemeji. Fun Awọn olutọju, oluranlowo antimicrobial, ti a lo ninu ounjẹ, awọn ohun ikunra ati awọn oogun. Tun lo fun igbekale ti Organic reagents. Awọn ẹru ti o wa lori mimu, iwukara ati awọn kokoro arun ni awọn ipa antibacterial gbooro, iwukara ati mimu si ipa ti o lagbara, ṣugbọn paapaa fun kokoro arun Gram-negative bacilli ati ipa ti Lactobacillus talaka. Ounjẹ ati oogun oogun to munadoko fungicides.
Sipesifikesonu
| Nkan | PATAKI |
| Ifarahan | Funfun okuta lulú |
| Mimo | >> 99.0% |
| Ojuami yo | 125-128 |
| Aloku lori iginisonu | = <0.1% |
| Àárá (mg/g) | 4.0-7.0 |
| Awọn nkan ti o jọmọ | = <0.5% |
| Idanimọ | Ṣe ibamu |
| Wipe ojutu | Ko o ati ki o sihin |
| Irin ti o wuwo (bii Pb) | = <10 ppm |
