O-Cresolphthalein CAS 596-27-0

CAS:596-27-0

Foirmle Molecular:C22H18O4

Cuideam moileciuil:346.38

EINECS:209-881-8

Co-fhaclan:3',3''-dimethyl-phenolphthalei;cresolphthalein;Di-o-Cresolphthalide;o-Cresolphalein;o-cresolphtaline;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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Dè a th’ ann an O-Cresolphthalein CAS 596-27-0?

Tha O-cresol phthalein na phùdar criostalach geal gu aotrom.Puing leaghaidh 216 ~ 217 ℃.Soluble ann an alcol, ether agus searbhag acetic eigh-shruthach, beagan solubhail ann an uisge, solubhail ann am benzene, soluble ann an alkali caol.Air a chleachdadh mar thaisbeanair bonn-searbh ann an ceimigeachd anailis.Tha structar ceimigeach agus feartan corporra is ceimigeach coltach ri phenolphthalein aige, agus tha an raon dath dath aige 8.2 (gun dath) -9.8 (dearg) (is e raon dath dath Phenolphthalein 8.2-10).Tha an structar searbhagach aige ann an cruth lactone gun dath, agus tha an structar bunaiteach aige ann an cruth quinone agus a’ nochdadh dearg.

Sònrachadh

Nì	Sònrachadh
Puing leaghaidh	223-225 ° C
puing ghoil	401.12 ° C (tuairmse garbh)
Dùmhlachd	1.1425 (tuairmse garbh)
Clàr-innse ath-bheòthail	1.4400 (tuairmse)
pKa	9.40 (aig 25 ℃)