O-Cresolphthalein CAS 596-27-0

CAS:596-27-0

Cov mis molecular:C22H18O4

Qhov Hnyav Molecular:346.38

EINECS:209-881-8

Cov lus txhais: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

Sau Koj Cov Lus

Cov Khoom Qhia Txog Khoom

Rub tawm

Cov Cim Npe Khoom

O-Cresolphthalein CAS 596-27-0 yog dab tsi?

O-cresol phthalein yog ib qho hmoov crystalline dawb mus rau daj daj. Melting point 216 ~ 217 ℃. Yaj hauv cawv, ether thiab glacial acetic acid, yaj me ntsis hauv dej, tsis yaj hauv benzene, yaj hauv dilute alkali. Siv ua tus qhia acid-base hauv analytical chemistry. Nws muaj cov qauv tshuaj lom neeg thiab cov khoom siv lub cev thiab tshuaj zoo ib yam li phenolphthalein, thiab nws cov xim hloov pauv yog 8.2 (tsis muaj xim) - 9.8 (liab) (Phenolphthalein xim hloov pauv yog 8.2-10). Nws cov qauv acid yog daim ntawv lactone tsis muaj xim, thiab nws cov qauv hauv paus yog daim ntawv quinone thiab zoo li liab.

Cov Lus Qhia Tshwj Xeeb

Khoom	Cov Lus Qhia Tshwj Xeeb
Qhov kub yaj	223-225 °C
Kub taw tes	401.12°C (kwv yees li qub)
Qhov Ceev	1.1425 (kwv yees li qub)
Cov ntsuas kev cuam tshuam	1.4400 (kwv yees)
pKa	9.40 (ntawm 25 ℃)