O-Cresolphthalein CAS 596-27-0

CAS:596-27-0

Molecular formula:C22H18O4

Kulemera kwa Molecular:346.38

EINECS:209-881-8

Mawu ofanana ndi mawu:3', 3''-dimethyl-phenolphthalei; cresolphthalein; Di-o-Cresolphthalide; o-Cresolphalein; o-cresolphtaleine; 3,3-bis (4-hydroxy-3-methylphenyl) -1 (3h) -isobenzofuranon; 3,3-Bis(4-hydroxy-3-methylphenyl)-1-(3H)-iso-benzofuranone

Siyani Uthenga Wanu

Tsatanetsatane wa Zamalonda

Tsitsani

Zolemba Zamalonda

Kodi O-Cresolphthalein CAS 596-27-0 ndi chiyani?

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.

Kufotokozera

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 ℃)

Kugwiritsa ntchito

O-Cresolphthalein imagwiritsidwa ntchito ngati chizindikiro cha acid-base chokhala ndi mitundu yosiyanasiyana ya pH8.2 (yopanda utoto) mpaka 9.8 (yofiira).