Thymolphthalein CAS 125-20-2

CAS:125-20-2

tātai rāpoi:C28H30O4

Taumaha rāpoi:430.54

Tau EINECS:204-729-7

kupu taurite: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,foranalysisACS;Tymolphthalein,tohu,parakore; THYMOLPHTALEINREAGENT(ACS); THYMOLPTHALEINSOLUTION

Waiho To Karere

Taipitopito Hua

Tikiake

Tohu Hua

He aha te Thymolphthalein CAS 125-20-2?

Ko te ingoa pūtaiao o Thymolphthalein ko "3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl) -phthalide", he reagent waro. Ko te tauira matū ko C28H30O4, ā, ko te taumaha ngota ko te 430.54. He paura tioata ma. He ngawari te wairewa i roto i te ether, acetone, waikawa pungatara me nga otinga kawakore, karekau ki te wai. I te nuinga o te wa ka whakamahia hei tohu tohu waikawa-waahi, a ko tana awhe huringa tae pH he 9.4-10.6, ka huri te tae mai i te kore tae ki te puru. Ina whakamahia, he maha nga wa ka rite ki te wairewa waiwaro 0.1% 90%. I te nuinga o te wa ka whakaritea me etahi atu tohu hei hanga i tetahi tohu whakakotahi ngawari kia whaiti ake te awhe huringa tae, kia marama ake te tirohanga.

Whakatakotoranga

ITEM	Paerewa	HUA
Tautuhinga	Ma ki te paura ma	Ka tutuki
¹H-NMR	Awhiorangi ōrite me te tohutoro	Paahi
HPLC ma	≥98%	99.6%
Ngaronga i te whakamaroke	1%max	0.24%

Taupānga

Ka whakamahia te Thymolphthalein hei tohu waikawa-turanga, me te awhe huringa tae pH o 9.4 ki te 10.6, me te rereke o te tae mai i te kore tae ki te puru. Ina whakamahia, he maha nga wa ka whakaritea hei wairewa waiwaro 0.1% 90%, a he maha nga wa ka konatunatua ki etahi atu tohu hei hanga i tetahi tohu whakauru kia whaiti ai, kia marama ake ai te awhe huringa tae ki te kite. Hei tauira, ko te tohu i mahia ma te whakaranu i te wairewa waiwaro 0.1% o tenei reagent ki te wairewa waihano 0.1% o te phenolphthalein he kore tae i roto i te wairewa waikawa, he papura i roto i te wairewa kawakore, ka piki ki te pH 9.9 (te tohu huringa tae), he tino ngawari ki te kite.