Thymolphthalein CAS 125-20-2
Aha sayensi Thymolphthalein bụ "3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl) -phthalide", nke bụ ihe na-emepụta ihe. Usoro kemịkalụ bụ C28H30O4, na ịdị arọ molekụla bụ 430.54. Ọ bụ ntụ ntụ kristal na-acha ọcha. Ọ na-agbaze ngwa ngwa na ether, acetone, sulfuric acid na ngwọta alkaline, na mmiri na-esighi ike. A na-ejikarị ya eme ihe dị ka ihe na-egosi acid-base, na pH ya na-agbanwe mgbanwe agba bụ 9.4-10.6, na agba na-agbanwe site na enweghị agba gaa na-acha anụnụ anụnụ. Mgbe a na-eji ya eme ihe, a na-akwadokarị ya na ngwọta ethanol 0.1% 90%. A na-ejikwa ihe ngosi ndị ọzọ na-akwado ya ka ọ na-emepụta ihe ngosi dị nro jikọtara ọnụ iji mee ka mgbanwe agba ya dị warara ma hụkwuo nke ọma.
| ITEM | Ọkọlọtọ | Nsonaazụ |
| njirimara | Na-acha ọcha na-acha ọcha ntụ ntụ | Na-akwado |
| 1H-NMR | Ụdịdị dị iche iche nwere ntụaka | Gafe |
| HPLC ịdị ọcha | ≥98% | 99.6% |
| Ọnwụ na ihicha | 1% kacha | 0.24% |
A na-ejikarị Thymolphthalein eme ihe dị ka ihe na-egosi acid-base, yana pH na-agbanwe mgbanwe agba nke 9.4 ruo 10.6, na agba na-agbanwe site na enweghị agba gaa na-acha anụnụ anụnụ. Mgbe a na-eji ya eme ihe, a na-akwado ya dị ka 0.1% 90% ethanol ngwọta, ma na-ejikọta ya na ihe ndị ọzọ na-egosi na ọ na-emepụta ihe ngosi agwakọtara iji mee ka mgbanwe agba ya dị warara ma doo anya ịhụ. Dịka ọmụmaatụ, ihe ngosi emere site na ịgwakọta 0.1% ethanol ngwọta nke reagent a na 0.1% ethanol ngwọta nke phenolphthalein enweghị agba na ngwọta acidic, odo odo na ngwọta alkaline, wee bilie na pH 9.9 (ebe mgbanwe agba), nke bụ. dị mfe ịhụ.
A na-akwakọba ngwaahịa na akpa, 25kg / drum
Thymolphthalein CAS 125-20-2
Thymolphthalein CAS 125-20-2
