Phenolphthalein cas 77-09-8

Cas:77-09-8

Formulae hypotheticae:C20H14O4

Pondus hypotheticum:318.32

EINECS:201-004-7

Synonym:alpha, alpha.-Di(p-hydroxyphenyl)phthalide; 1(3H)-Isobenzofuranone, 3,3-bis(4-hydroxyphenyl)-; 1(3H)-Isobenzofuranone,3,3-bis(4-hydroxyphenyl)-; 2,2-bis(p-hydroxyphenyl) phthalide; 3,3-bis(4-hydroxyphenyl)-1(3h)-isobenzofuranon; alpha-(p-hydroxyphenyl)-alpha-(4-oxo-2,5-cyclohexadien-1-ylidine)-o-toluicacid; alpha-di-(p-hydroxyphenyl) phthalide

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Quid est Phenolphthalein cas 77-09-8?

Phenolphthalein est acidum organicum infirmum, quod apparet sicut alba vel subflava crystallis tenuis in locus temperatus. Inodorus est et insulsus. Difficile est in aqua dissolvere, sed facile solutum in alcohole (ethanol) et aethere. Solvitur solutio alcoholis ad indicator basin acido-faciendi. In solutione acidica hyalina et rubra est in solutione alcali vel solutione carbonatis metalli alcali. Attamen, si in solutione alcali coacta sit, acidum trimetallicum hyalinum producet. sal, rufus color abit

Specification

Aspectus	Alba vel levis flavo crystallinum pulveris
Content	98-102
punctum liquescens	260-263℃
Chloride	≤0.01
Sulfate	≤0.02
Sensibilitas	secundum quid
Reliqua ignitio (Per sulfate termini)	≤0.1
Damnum in siccitate	≤1.0
Metallum grave	≤0.001
Totalis numerus bacteria aerobic	≤1000cfu/g*
Totalis numerus formae et warms	≤100cfu/g*

Applicationem

1. Materia rudis pharmaceutica pro industria pharmaceutica: apta ad constipationem habitualem et pertinacem, promptum in tabulis, suppositoriis et aliis formis dosis.

2. Phenolphthalein in synthesi organica adhibita: praesertim pro materia synthetica, praesertim pro synthesi naphthyridini polyaryl et ketonis polyaryl et ketonis polymerorum. Hoc genus polymerus optimum calorem habet resistentiam, resistentiam aquae et resistentiam chemica. Ob resistentiam corrosionis, resistentia senescentis caloris et processus bonus et formabilitas, fibrae, tunicae et materiae compositae ex ea factae mox late in adhibitis electronicis, instrumentis mechanicis, translatione, aerospace, atomico energiae machinali et campis militaribus utuntur.

3. Phenolphthalein pro indice basi acido-basi, indicator pro titratione solutionum non aquearum, et pro analysi chromatographica gerens.