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Awọn ọja

(±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid Cas: 53188-07-1 lulú.

Apejuwe kukuru:

Nọmba Katalogi: XD90174
Cas: 53188-07-1
Fọọmu Molecular: C14H18O4
Ìwọ̀n Molikula: 250.29
Wiwa: O wa
Iye:  
Iṣakojọpọ: 5g20 USD
Apo Ọpọ: Beere Quote

 

 

 

 

 

 

 

 


Alaye ọja

ọja Tags

Nọmba katalogi XD90174
Orukọ ọja (±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid
CAS 53188-07-1
Ilana molikula C14H18O4
Òṣuwọn Molikula 250.29
Awọn alaye ipamọ Ibaramu

 

Ọja Specification

Ifarahan lulú
Asay 99%
iwuwo 1.219± 0.06 g/cm3 (20 ºC 760 Torr),
Ojuami yo 187-189 °C (tan.)
Oju omi farabale 313.42°C (iṣiro ti o ni inira)
oju filaṣi 171°C
Atọka itọka 1.4970 (iṣiro)
Solubility Tiotuka pupọ pupọ (0.58 g/L) (25ºC)
Solubility die-die tiotuka omi

 

 

Apejuwe: Quinol dimethacrylate jẹ Vitamin E. Awọn vitamin ti o ni omi-omi jẹ kilasi ti awọn agbo-ara ti o ni imọran ti o ṣe pataki fun mimu awọn iṣẹ igbesi aye deede ti ara eniyan ati pe o nilo diẹ.Quinol dimethacrylate le wa ni pese sile lati 1,4-dihydroxy-2,3,5-trimethylbenzene, olomi formalin ati methyl methacrylate bi awọn ohun elo ibẹrẹ.

Igbaradi: Ninu apo gilasi 200mL ti o ni ipese pẹlu condenser, fi 16.7g (59.1mmolCCM, mimọ kemikali: 93.5%) sinu CCM ti a pese sile loke), fi 16.7g methanol, 3.3g (82.5mmol) ti NaOH ati 50 g omi. , ati awọn adalu ti a tunmọ si hydrolysis ti awọn ester ni 80 °C labẹ nitrogen bugbamu.Aruwo fun wakati kan pẹlu saropo.Ojutu ifasẹyin ti wa ni filtered ni iwọn otutu kanna lati yọ ọrọ insoluble kuro, ati lẹhinna fi kun dropwise si ojutu ekikan ti a gba nipasẹ itu 11.7 g (85.9 mmol) ti potasiomu hydrogen sulfate ni 50 g ti omi fun wakati kan.Jeki ni 80 ° C.ninu apo gilasi 300 milimita ti o ni ibamu pẹlu condenser.Lẹhin ti itọju yomijade ti pari, awọn kirisita rọra lẹsẹkẹsẹ nigbati a da duro, ati pe a ti gba adalu esi lati duro.Awọn kirisita ti wa ni filtered ni 80°C, ti a fo lẹẹmeji pẹlu 50 milimita ti omi, ati lẹhinna gbẹ labẹ igbale ni 80°C.Idahun naa ni a ṣe fun awọn wakati 24 lati gba 14.5 g (57.9 mmol) ti 6-hydroxy-2,5,7,8-tetramethylbenzo-2-carboxylic acid, quinodimethacrylate (lẹhinna ti a tọka si bi CCA) (Ikore: 98.3%, kemikali ti nw: 99,7%).

Iṣẹ iṣe ti Ẹjẹ: Trolox jẹ afọwọṣe omi-tiotuka ti Vitamin E pẹlu awọn ohun-ini antioxidant ti o lagbara.Trolox tun jẹ oludena ti o lagbara ti ibajẹ awọ ara.

Nlo: Apaniyan ti o wa lati inu Vitamin E ti omi-tiotuka pẹlu scavenging radical ọfẹ ati iṣẹ-ṣiṣe antioxidant.


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  • Sunmọ

    (±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid Cas: 53188-07-1 lulú.