Thymolphthalein CAS 125-20-2

CAS:125-20-2

fua mole:C28H30O4

mamafa mole:430.54

Numera EINECS:204-729-7

upu uiga tutusa:3,3-bis(4-hydroxy-2-methyl-5-(1-methylethyl)phenyl) -1(3H)-Isobenzofuranone; 3,3-bis[4-hydroxy-2-methyl-5-(1-methylethyl)phenyl]-1(3h)-isobenzofuranon; Thymolphthalein,su'esu'eACS;Tymolphthalein,fa'ailoga,mama; THYMOLPHTALEINREAGENT(ACS); THYMOLPTHALEINSOLUTION

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O le a le Thymolphthalein CAS 125-20-2?

O le igoa fa'asaienisi a Thymolphthalein o le "3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl)-phthalide", o se mea fa'aletino. Ole fua ole vaila'au ole C28H30O4, ma ole mamafa ole mole ole 430.54. O se pauta tioata pa'epa'e. E faigofie ona solu i le ether, acetone, sulfuric acid ma alkaline solutions, ma e le mafai ona solu i le vai. E masani ona faʻaaogaina e avea o se faʻamaoniga o le acid-base, ma o lona pH suiga lanu lanu e 9.4-10.6, ma o le lanu e sui mai le lanu i le lanumoana. A fa'aaogaina, e masani ona saunia i se vaifofo ethanol 0.1% 90%. E masani fo'i ona saunia ma isi fa'ailoga e fai ai se fa'ailo tu'ufa'atasi mālū ina ia va'api'i le va'aiga o suiga o lanu ma manino atili ai le mata'ituina.

Fa'amatalaga

MEA	TULAGA	i'uga
Fa'ailoaga	Pa'epa'e i le pa'epa'e pa'epa'e	E usitaia
¹H-NMR	Alaleo tutusa ma faasinomaga	Pasa
HPLC mama	≥98%	99.6%
Ma'imau ile fa'amago	1% maualuga	0.24%

Fa'atatauga

O le Thymolphthalein e masani ona faʻaaogaina e fai ma faʻamaoniga o le acid-base, ma le pH o le suiga o lanu o le 9.4 i le 10.6, ma le suiga o le lanu mai le le lanu i le lanumoana. Pe a faʻaaogaina, e masani ona saunia e pei o se vaifofo ethanol 0.1% 90%, ma e masani ona faʻafefiloi ma isi faʻailoga e fai ai se faʻailoga fefiloi ina ia vaapiapi ma manino le vaʻaiga o lona lanu e matau. Mo se faʻataʻitaʻiga, o se faʻailoga e faia e ala i le faʻafefiloi o le 0.1% ethanol solution o lenei reagent ma le 0.1% ethanol solution o le phenolphthalein e leai se lanu i totonu o se vaifofo acidic, lanu viole i se vaifofo alkaline, ma rosa i le pH 9.9 (tulaga suiga lanu), o le faigofie tele ona matau.