Thymolphthalein CAS 125-20-2

CAS:125-20-2

Foromo ea molek'hule:C28H30O4

Boima ba molek'hule:430.54

Nomoro ea EINECS:204-729-7

Synonym: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,foraanalysisACS;Thymolphthalein,pontshi,hloekile; THYMOLPHTHALEINREAGENT(ACS); THYMOLPHTHALEISOLUTION

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Thymolphthalein CAS 125-20-2 ke eng?

Lebitso la saense la Thymolphthalein ke "3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl)-phthalide", e leng reagent ea tlhaho. Foromo ea lik'hemik'hale ke C28H30O4, 'me boima ba molek'hule ke 430.54. Ke phofo e tšoeu ea kristale. E qhibiliha habonolo ka har'a ether, acetone, sulfuric acid le alkaline solutions, 'me ha e qhibilihe metsing. Hangata e sebelisoa e le pontšo ea acid-base, 'me pH ea eona ea phetoho ea mebala ke 9.4-10.6,' me 'mala o fetoha ho tloha ho se nang 'mala ho ea ho o moputsoa. Ha e sebelisoa, hangata e lokisetsoa ka tharollo ea ethanol ea 0.1% 90%. E boetse e lokisoa hangata ka matšoao a mang ho theha sesupo se kopantsoeng ka bonolo ho etsa hore mefuta ea eona ea phetoho ea 'mala e be tšesaane le pono e hlakileng haholoanyane.

Tlhaloso

ITEM	TS'ELISO	RESULT
Boitsebiso	Phofo e tšoeu ho isa ho e tšoeu	E lumellana
¹H-NMR	Maqhubu a tšoanang le a referense	Feta
HPLC bohloeki	≥98%	99.6%
Tahlehelo ka ho omisa	1%max	0.24%

Kopo

Hangata Thymolphthalein e sebelisoa e le pontšo ea acid-base, e nang le pH ea phetoho ea mebala ea 9.4 ho ea ho 10.6, le ho fetoha ha 'mala ho tloha ho se nang mebala ho ea ho o moputsoa. Ha e sebelisoa, hangata e lokiselitsoe e le tharollo ea ethanol ea 0.1% 90%, 'me hangata e kopantsoe le matšoao a mang ho etsa pontšo e tsoakiloeng ho etsa hore mefuta ea eona ea phetoho ea' mala e be moqotetsane le e hlakileng haholoanyane ho e ela hloko. Ka mohlala, pontšo e entsoeng ka ho kopanya 0.1% ea tharollo ea ethanol ea reagent ena le 0.1% ea phenolphthalein ea 0.1% ha e na mebala ka tharollo e nang le asiti, e pherese ka tharollo ea alkaline, 'me e tsohile pH 9.9 ('mala oa phetoho ntlha), e leng ho bonolo haholo ho e hlokomela.