Thymolphthalein CAS 125-20-2
Dzina la sayansi la Thymolphthalein ndi "3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl)-phthalide", yomwe ndi organic reagent. Njira yamankhwala ndi C28H30O4, ndipo kulemera kwa maselo ndi 430.54. Ndi ufa wa crystalline woyera. Amasungunuka mosavuta mu ether, acetone, sulfuric acid ndi alkaline solutions, komanso osasungunuka m'madzi. Nthawi zambiri amagwiritsidwa ntchito ngati chizindikiro cha acid-base, ndipo kusintha kwa mtundu wa pH ndi 9.4-10.6, ndipo mtundu umasintha kuchoka ku mtundu wopanda utoto kupita ku buluu. Akagwiritsidwa ntchito, nthawi zambiri amakonzedwa kukhala 0.1% 90% ethanol solution. Amakonzedwanso nthawi zambiri ndi zizindikiro zina kuti apange chizindikiro chophatikizika chofatsa kuti chipangitse kusintha kwake kwamtundu kukhala kocheperako komanso kuwonetsetsa bwino.
| ITEM | ZOYENERA | ZOtsatira |
| Chizindikiritso | Ufa woyera mpaka woyera | Zimagwirizana |
| 1H-NMR | Chiwonetsero chofanana ndi cholozera | Pitani |
| HPLC chiyero | ≥98% | 99.6% |
| Kutaya pakuyanika | 1% kuchuluka | 0.24% |
Thymolphthalein nthawi zambiri amagwiritsidwa ntchito ngati chizindikiro cha acid-base, chokhala ndi pH mtundu wa kusintha kwa 9.4 mpaka 10.6, ndi kusintha kwa mtundu kuchokera ku mtundu wopanda mtundu kupita ku buluu. Akagwiritsidwa ntchito, nthawi zambiri amakonzedwa ngati njira ya 0,1% 90% ya ethanol, ndipo nthawi zambiri amasakanizidwa ndi zizindikiro zina kuti apange chizindikiro chosakanikirana kuti mtundu wake usinthe mtundu ukhale wocheperako komanso womveka bwino kuti uwone. Mwachitsanzo, chizindikiro chopangidwa ndi kusakaniza 0,1% Mowa njira ya reagent ndi 0,1% Mowa njira ya phenolphthalein ndi colorless mu njira acidic, wofiirira mu njira zamchere, ndipo ananyamuka pa pH 9.9 (mtundu kusintha mfundo), amene n'zosavuta kuona.
Zogulitsa zimayikidwa m'thumba, 25kg / ng'oma
Thymolphthalein CAS 125-20-2
Thymolphthalein CAS 125-20-2
