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Oloa

(±)-6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid Cas:53188-07-1 pa'u

Fa'amatalaga Puupuu:

Numera fa'amaumauga: XD90174
Cas: 53188-07-1
Fuafua mole: C14H18O4
Molecular Weight: 250.29
Avanoa: E tele
Tau:  
mua'i afifi: 5g USD20
Vaega Tele: Talosaga Sesii

 

 

 

 

 

 

 

 


Fa'amatalaga Oloa

Faailoga o oloa

Numera Fa'amaumauga XD90174
Igoa Oloa (±)-6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid
CAS 53188-07-1
Fuafua mole C14H18O4
Molecular Weight 250.29
Fa'amatalaga Teuina Ambient

 

Fa'amatalaga o oloa

Fa'aaliga pauta
Asay 99%
Malosi 1.219±0.06 g/cm3 (20 ºC 760 Torr),
Liu liusuavai 187-189 °C (malamalama)
Fa'apuna 313.42°C (fa'atatau fa'atatau)
Fa'ailoga moli 171°C
Fa'ailoga fa'afofo 1.4970 (fa'atatau)
Solubility E matua'i solu (0.58 g/L) (25 ºC)
Solubility solu vai itiiti

 

 

VAAIGA AOAO: Quinol dimethacrylate o se vai-soluble vaitamini E. Vai-soluble vitamini o se vasega o mea faʻapipiʻi e taua tele mo le tausia o gaioiga masani o le olaga o le tino o le tagata ma manaʻomia le itiiti ifo.Quinol dimethacrylate e mafai ona saunia mai le 1,4-dihydroxy-2,3,5-trimethylbenzene, aqueous formalin ma le methyl methacrylate e avea ma mea amata.

Sauniuniga: I totonu o se pusa tioata 200mL ua faʻapipiʻiina i se condenser, faʻaopopo le 16.7g (59.1mmolCCM, vailaʻau mama: 93.5%) i totonu o le CCM ua saunia i luga), tuʻu le 16.7g methanol, 3.3g (82.5mmol) o le NaOH ma le 50 g o le vai. , ma o le paluga na faia i le hydrolysis o le ester i le 80 °C i lalo o le ea o le nitrogen.Faʻafefe mo le itula e tasi ma faʻafefe.O le vaifofo tali na faʻamamaina i le vevela lava e tasi e aveese ai mea e le mafai ona faʻaaogaina, ona faʻaopopoina lea o le pa'ū i se vaifofo acidic na maua e ala i le faʻamavaeina o le 11.7 g (85.9 mmol) o le potassium hydrogen sulfate i le 50 g o le vai i le tasi itula.Taofi ile 80°C.i totonu o se pusa tioata 300 ml faʻapipiʻi i se condenser.Ina ua maeʻa le togafitiga o le neutralization, na vave ona tafe mai tioata pe a taofi le faʻamalosi, ma faʻatagaina le paluga tali e tu.O tioata na faʻamama i le 80 ° C, fufulu faalua i le 50 mL o le vai, ona faʻamago lea i lalo o le masini i le 80 ° C.O le tali na faia mo le 24 itula e maua ai le 14.5 g (57.9 mmol) o le 6-hydroxy-2,5,7,8-tetramethylbenzo-2-carboxylic acid, quinodimethacrylate (lea e taʻua mulimuli ane o CCA) (Auina: 98.3%, mama vailaʻau: 99.7%).

Gaoioiga Fa'alesoifua maloloina: Trolox o se analog vai-soluble o le vaitamini E faʻatasi ai ma mea faʻamalosi malosi.O le Trolox o se faʻalavelave malosi foi o le faaleagaina o membrane.

Fa'aoga: Ose antioxidant e maua mai vai-soluble vaitamini E fa'atasi ai ma fa'ama'i fa'ama'i fa'asa'oloto ma gaioiga fa'amasani.


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    (±)-6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid Cas:53188-07-1 pa'u