(±)-6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid Cas:53188-07-1 paura
| Nama Putumōhio | XD90174 |
| Ingoa Hua | (±)-6-Hydroxy-2,5,7,8-tetramethylchromane-2-carboxylic acid |
| CAS | 53188-07-1 |
| Tātai rāpoi | C14H18O4 |
| Taumaha rāpoi | 250.29 |
| Nga Taipitopito Rokiroki | Ambient |
Whakatakotoranga Hua
| Te ahua | paura |
| Ahahay | 99% |
| Kiato | 1.219±0.06 g/cm3 (20 ºC 760 Torr), |
| Te rewa | 187-189 °C (marama) |
| Kohuatanga | 313.42°C (whakatau tata) |
| Ira hiko | 171°C |
| Taupū Refactive | 1.4970 (whakatau tata) |
| Wairewa | Tino paku te wairewa (0.58 g/L) (25 ºC) |
| Wairewa | paku wairewa |
WHAKAARO: Ko te Quinol dimethacrylate he huaora wai-wairewa E. Ko nga huaora wairewa he karaehe o nga pūhui waro e tino nui ana mo te pupuri i nga mahi o te tinana o te tangata me te iti ake te hiahia.Ka taea te whakarite Quinol dimethacrylate mai i te 1,4-dihydroxy-2,3,5-trimethylbenzene, te formalin wai me te methyl methacrylate hei rauemi timata.
Te Whakaritenga: I roto i te ipu karaihe 200mL kua mau ki te condenser, whakauruhia te 16.7g (59.1mmolCCM, te matū matū: 93.5%) ki te CCM kua whakaritea i runga ake nei, hoatu te 16.7g methanol, 3.3g (82.5mmol) o NaOH me te 50 g wai. , ka tukuna te ranunga ki te hauwai o te hākawa i te 80 °C i raro i te hau hauota.Oho mo te haora kotahi me te whakaoho.I tātarihia te wairewa tauhohenga i te pāmahana rite ki te tango i nga mea korekore, katahi ka taapiri atu ki tetahi wairewa waikawa i riro mai ma te whakakore i te 11.7 g (85.9 mmol) o te konupora hydrogen sulfate i roto i te 50 g wai mo te haora kotahi.Kia mau ki te 80°C.i roto i te ipu karaihe 300 ml kua whakauruhia ki te kaitao.I muri i te otinga o te maimoatanga aukati, ka heke tonu nga tioata i te wa i mutu ai te whakakorikori, a ka waiho te ranunga tauhohenga kia tu.Ka tātarihia nga tioata i te 80°C, ka horoi rua ki te 50 mL wai, ka whakamarokehia i raro i te korehau i te 80°C.I whakahaerehia te tauhohenga mo nga haora 24 ki te whiwhi 14.5 g (57.9 mmol) o te 6-hydroxy-2,5,7,8-tetramethylbenzo-2-carboxylic acid, quinodimethacrylate (i muri nei ka kiia ko CCA) ( Hua: 98.3%, matū matū: 99.7%).
Mahi Koiora: Ko Trolox he tairitenga wairewa-wairewa o te huaora E me nga taonga antioxidant kaha.Ko te Trolox he aukati kaha mo te kino o te membrane.
Whakamahinga: He antioxidant i ahu mai i te wai-wairewa huaora E me te hamuhana tuwhena kore utu me te mahi antioxidant.
