(±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid Cas: 53188-07-1 ntụ ntụ.
| Nọmba katalọgụ | XD90174 |
| Aha ngwaahịa | (±) -6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid. |
| CAS | 53188-07-1 |
| Usoro ihe omimi | C14H18O4 |
| Ibu molekụla | 250.29 |
| Nkọwa nchekwa | Ambient |
Nkọwapụta ngwaahịa
| Ọdịdị | ntụ ntụ |
| Asay | 99% |
| Njupụta | 1.219±0.06 g/cm3 (20 ºC 760 Torr), |
| Ebe mgbaze | 187-189 Celsius C (ọkụ) |
| Ebe esi nri | 313.42C (atụmatụ siri ike) |
| ebe mgbari | 171°C |
| Ntụgharị ntụgharị | 1.4970 (atụmatụ) |
| Solubility | Soluble dị ntakịrị (0.58 g/L) (25 ºC) |
| Solubility | ubé mmiri soluble |
Nlele anya: Quinol dimethacrylate bụ vitamin E nwere mmiri na-agbaze mmiri. Vitamin na-edozi mmiri bụ otu akụkụ nke ogige organic nke dị mkpa maka ịnọgide na-arụ ọrụ ndụ nkịtị nke ahụ mmadụ ma na-achọ obere ihe.Enwere ike ịkwadebe Quinol dimethacrylate site na 1,4-dihydroxy-2,3,5-trimethylbenzene, aqueous formalin na methyl methacrylate dị ka ihe mmalite.
Nkwadebe: N'ime iko iko 200mL nke nwere condenser, tinye 16.7g (59.1mmolCCM, ịdị ọcha kemịkalụ: 93.5%) n'ime CCM kwadebere n'elu), tinye 16.7g methanol, 3.3g (82.5mmol) nke NaOH na 50 g mmiri. , na ngwakọta e doro hydrolysis nke ester na 80 Celsius C n'okpuru nitrogen ikuku.Mee ka otu awa na-akpali akpali.A na-enyocha ihe ngwọta mmeghachi omume n'otu okpomọkụ ahụ iji wepụ ihe na-adịghị edozi ahụ, wee tinye ya na mmiri mmiri na ngwọta acidic nwetara site na igbari 11.7 g (85.9 mmol) nke potassium hydrogen sulfate na 50 g mmiri n'ime otu awa.Debe na 80 Celsius C.na iko iko 300 ml nke etinyere na condenser.Mgbe emechara ọgwụgwọ neutralization ahụ, kristal na-agbapụta ozugbo mgbe a kwụsịrị ịkpali, ma kwe ka ngwakọta mmeghachi omume guzoro.A na-enyocha kristal na 80 Celsius C, jiri mmiri 50 ml saa ugboro abụọ, wee kpoo ya n'okpuru oghere na 80 Celsius.Emere mmeghachi omume ahụ maka awa 24 iji nweta 14.5 g (57.9 mmol) nke 6-hydroxy-2,5,7,8-tetramethylbenzo-2-carboxylic acid, quinodimethacrylate (nke a na-akpọ CCA) (Mkpụrụ: 98.3%, ịdị ọcha kemịkalụ: 99.7%).
Ọrụ ndu: Trolox bụ analọgụ mmiri na-agbaze nke vitamin E nwere ihe ndị nwere ike antioxidant.Trolox bụkwa ihe mgbochi siri ike nke mmebi akpụkpọ ahụ.
Na-eji: Ihe antioxidant sitere na vitamin E na-agbaze mmiri nwere ihe nhụcha nke radical na ọrụ antioxidant.
