Propyl Paraben | 94-13-3 : kuv
Khoom Description
Kab lus no yog hais txog qhov sib xyaw tshwj xeeb. Rau cov chav kawm ntawm hydroxybenzoate esters, suav nrog kev sib tham txog cov teebmeem kev noj qab haus huv, saib paraben
Propylparaben, n-propyl ester ntawm p-hydroxybenzoic acid, tshwm sim raws li cov khoom siv ntuj tsim muaj nyob hauv ntau cov nroj tsuag thiab qee cov kab, txawm hais tias nws yog tsim los siv rau hauv tshuaj pleev ib ce, tshuaj thiab zaub mov. Nws yog ib qho preservative feem ntau pom nyob rau hauv ntau cov tshuaj pleev ib ce dej, xws li cream, tshuaj pleev ib ce, tshuaj zawv plaub hau thiab da dej. Raws li cov khoom noj ntxiv, nws muaj tus lej E E216.
Sodium propyl p-hydroxybenzoate, sodium ntsev ntawm propylparaben, ib qho chaw nrog mis Na (C3H7 (C6H4COO) O), kuj tseem siv zoo ib yam li cov khoom noj ntxiv thiab ua cov tshuaj tiv thaiv kab mob. Nws tus lej E yog E217.Propyl ParabenCas No.: 94-13-3Standard: USP28Assay: 99.0 ~ 100.5% Xim tsis muaj xim lossis dawb crystalline hmoov, dawb do soluble hauv cawv thiab ether, tab sis me ntsis soluble hauv dej.Propylparaben, propyl ester ntawm p-hydroxybenzoic acid, tshwm sim raws li ib tug natural tshuaj muaj nyob rau hauv ntau yam nroj tsuag thiab ib co kab, txawm hais tias nws yog tsim los synthetically siv nyob rau hauv tshuaj pleev ib ce, tshuaj thiab zaub mov. Nws yog ib qho preservative feem ntau pom nyob rau hauv ntau cov tshuaj pleev ib ce dej, xws li cream thiab tshuaj pleev ib ce thiab qee yam khoom siv da dej.
Specification
| Yam khoom | SPECIFICATIONS |
| Cov cim | Dawb crystalline hmoov |
| Purity (hauv paus qhuav)% | 98.0-102.0 Nws |
| Acidity (PH) | 4.0-7.0 Nws |
| Melting point (°C) | 96-99 : kuv |
| Sulfate (SO42-) | = <300 ppm |
| Residue ntawm Ignition (%) | =<0.10 |
| Kev ua tiav ntawm kev daws teeb meem | Ntshiab thiab pob tshab |
| Organic volatile impurities | =<0.5 |
| Loss ntawm ziab (%) | =<0.5 |
