O-Cresolphthalein CAS 596-27-0
O-cresol phthalein ndi ufa wonyezimira wonyezimira mpaka wachikasu.Malo osungunuka 216 ~ 217 ℃.Amasungunuka mu mowa, ether ndi glacial acetic acid, sungunuka pang'ono m'madzi, osasungunuka mu benzene, sungunuka mu dilute alkali.Amagwiritsidwa ntchito ngati chizindikiro cha acid-base mu analytical chemistry.Zili ndi mawonekedwe ofanana ndi mankhwala komanso thupi ndi mankhwala ku phenolphthalein, ndipo mtundu wake wa mitundu yosiyanasiyana ndi 8.2 (wopanda mtundu) -9.8 (wofiira) (Phenolphthalein mtundu wa mtundu wa 8.2-10).Mapangidwe ake a asidi ndi mawonekedwe a lactone opanda mtundu, ndipo maziko ake ndi mawonekedwe a quinone ndipo amawoneka ofiira.
Kanthu | Kufotokozera |
Malo osungunuka | 223-225 ° C |
Malo otentha | 401.12°C (kuyerekeza molakwika) |
Kuchulukana | 1.1425 (kuyerekeza movutikira) |
Refractive index | 1.4400 (chiyerekezo) |
pKa | 9.40 (pa 25 ℃) |
O-Cresolphthalein imagwiritsidwa ntchito ngati chizindikiro cha acid-base chokhala ndi mitundu yosiyanasiyana ya pH8.2 (yopanda utoto) mpaka 9.8 (yofiira).
25kg / ng'oma kapena malinga ndi zofuna za makasitomala.
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O-Cresolphthalein CAS 596-27-0
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O-Cresolphthalein CAS 596-27-0