O-Cresolphthalein CAS 596-27-0

CAS:596-27-0 : kuv

Molecular Formula:C22H18O4

Molecular Luj:346.38 ib

EINECS:209-881-8 ib

Synonyms: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

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

O-cresol phthalein yog dawb mus rau lub teeb daj crystalline hmoov. Melting point 216 ~ 217 ℃. Soluble nyob rau hauv cawv, ether thiab glacial acetic acid, me ntsis soluble nyob rau hauv dej, insoluble nyob rau hauv benzene, soluble nyob rau hauv dilute alkali. Siv los ua ib qho ntsuas acid-base hauv analytical chemistry. Nws muaj cov qauv tshuaj zoo sib xws thiab lub cev thiab tshuaj lom neeg rau phenolphthalein, thiab nws cov xim tsis muaj xim yog 8.2 (tsis muaj xim)-9.8 (liab) (Phenolphthalein xim ntau yam yog 8.2-10). Nws cov qauv acid yog xim tsis muaj xim lactone, thiab nws cov qauv hauv paus yog quinone daim ntawv thiab tshwm liab.

Specification

Yam khoom	Specification
Melting point	223-225 ° C
Boiling point	401.12°C (kev kwv yees)
Qhov ntom	1.1425 (zeeg)
Refractive Index	1.4400 (kwv yees)
pKa	9.40 (ntawm 25 ℃)