O-Cresolphthalein CAS 596-27-0

CAS:596-27-0

Tātai ngota:C22H18O4

Taumaha ngota:346.38

EINECS:209-881-8

Ngā kupu taurite:3',3''-dimethyl-phenolphthalei; cresolphthalein; Di-o-Cresolphthalide; o-Cresolphalein; o-cresolphtaleine; 3,3-bis(4-hydroxy-3-methylphenyl)-1(3h)-isobenzofuranone; 3,3-Bis(4-hydroxy-3-methylphenyl)-1-(3H)-iso-benzofuranone

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Taipitopito Hua

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He aha te O-Cresolphthalein CAS 596-27-0?

He paura tioata mā ki te kōwhai mārama te O-cresol phthalein. Ko te ira rewa he 216 ~ 217℃. Ka wairewa ki te waipiro, te ether me te waikawa acetic glacial, he paku wairewa ki te wai, kāore e wairewa ki te benzene, ka wairewa ki te alkali waimeha. Whakamahia hei tohu waikawa-pūtake i roto i te matū tātari. He rite te hanganga matū me ngā āhuatanga ā-tinana me te matū ki te phenolphthalein, ā, ko tōna awhe tae ko te 8.2 (kore tae) -9.8 (whero) (ko te awhe tae tae Phenolphthalein he 8.2-10). Ko tōna hanganga waikawa he āhua lactone kore tae, ā, ko tōna hanganga pūtake he āhua quinone, ā, he whero te āhua.

Whakatakotoranga

Taonga	Whakatakotoranga
Te pūwāhi rewa	223-225 °C
Te pūwāhi koropupū	401.12°C (whakatau tata)
Kiato	1.1425 (whakatau tata)
Taupū whakaata	1.4400 (whakatau tata)
pKa	9.40 (i te 25℃)