Thymolphthalein CAS 125-20-2
Sunan kimiyya na Thymolphthalein shine "3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl) -phthalide", wanda shine reagent na halitta. Tsarin sinadaran shine C28H30O4, kuma nauyin kwayoyin shine 430.54. Farin lu'ulu'u ne. Yana da sauƙin narkewa a cikin ether, acetone, sulfuric acid da maganin alkaline, kuma maras narkewa cikin ruwa. Ana amfani da shi sau da yawa azaman alamar acid-tushe, kuma canjin canjin launi na pH shine 9.4-10.6, kuma launi yana canzawa daga mara launi zuwa shuɗi. Lokacin amfani da shi, ana shirya shi sau da yawa a cikin maganin ethanol na 0.1% 90%. Har ila yau, ana shirya shi tare da wasu alamomi don samar da alamar haɗe mai laushi don sanya yanayin canjin launinsa ya ƙunshe da abin dubawa.
| ITEM | STANDARD | SAKAMAKO |
| Ganewa | Fari zuwa kashe-fari foda | Ya bi |
| 1H-NMR | Izinin bakan tare da tunani | Wuce |
| HPLC tsarki | ≥98% | 99.6% |
| Asarar bushewa | 1% max | 0.24% |
Ana amfani da Thymolphthalein sau da yawa azaman alamar tushen acid, tare da canjin launi na pH na 9.4 zuwa 10.6, da canjin launi daga mara launi zuwa shuɗi. Lokacin amfani da shi, sau da yawa ana shirya shi azaman maganin ethanol na 0.1% 90%, kuma galibi ana haɗe shi tare da wasu alamomi don samar da alamar gauraya don sanya kewayon canjin launinsa kunkuntar kuma mafi bayyane don lura. Alal misali, alamar da aka yi ta hanyar haɗuwa da 0.1% ethanol bayani na wannan reagent tare da 0.1% ethanol bayani na phenolphthalein ba shi da launi a cikin maganin acidic, purple a cikin bayani na alkaline, kuma ya tashi a pH 9.9 (launi canjin launi), wanda shine mai sauƙin lura.
Ana tattara samfuran cikin jaka, 25kg/drum
Thymolphthalein CAS 125-20-2
Thymolphthalein CAS 125-20-2
