Cov Khoom Kub Tshiab Thymolphthalein CAS 125-20-2 rau Acid-Base Indicators
Cov cuab yeej ua haujlwm zoo, pab pawg muag khoom zoo tshaj plaws, thiab txhim kho cov tuam txhab tom qab muag; Peb kuj yog ib pawg neeg loj hauv tsev neeg, txhua tus neeg txhua tus ua raws li lub koom haum tau txais txiaj ntsig "kev sib koom ua ke, kev mob siab rau, kev ua siab ntev" rau Cov Khoom Kub Kub TshiabThymolphthaleinCAS 125-20-2 rau Acid-Base Indicators, Yuav kom nce peb cov kev pabcuam zoo, peb lub tuam txhab xa tawm ntau cov khoom siv txawv teb chaws. Zoo siab txais tos cov neeg siv khoom hauv tsev thiab txawv teb chaws tuaj yeem txuas nrog thiab nug!
Cov cuab yeej ua haujlwm zoo, pab pawg muag khoom zoo tshaj plaws, thiab txhim kho cov tuam txhab tom qab muag; Peb kuj yog ib tug neeg koom siab loj hauv tsev neeg, txhua leej txhua tus ua raws li lub koom haum tau txais txiaj ntsig "kev sib koom ua ke, kev mob siab rau, kev ua siab ntev" rau, Los ntawm kev koom ua ke nrog kev tsim khoom lag luam txawv teb chaws, peb tuaj yeem muab tag nrho cov neeg siv khoom daws teeb meem los ntawm kev lav cov khoom xa tuaj rau qhov chaw raug lub sijhawm, uas tau txais kev txhawb nqa los ntawm peb cov kev paub dhau los, muaj peev xwm ntau lawm, muaj peev xwm ua tau zoo, muaj ntau hom kev lag luam thiab kev lag luam zoo li kev lag luam. kev pabcuam. Peb xav qhia peb cov tswv yim nrog koj thiab txais tos koj cov lus nug thiab lus nug.
ThymolphthaleinLub npe scientific yog "3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl)-phthalide", uas yog cov organic reagent. Cov mis mos yog C28H30O4, thiab qhov hnyav molecular yog 430.54. Nws yog dawb crystalline hmoov. Nws yooj yim soluble hauv ether, acetone, sulfuric acid thiab alkaline daws, thiab insoluble hauv dej. Nws feem ntau yog siv los ua cov kua qaub-puag qhia, thiab nws cov xim hloov pauv pH yog 9.4-10.6, thiab cov xim hloov ntawm tsis muaj xim mus rau xiav. Thaum siv, nws yog feem ntau npaj rau hauv 0.1% 90% ethanol tov. Nws kuj yog feem ntau npaj nrog rau lwm cov ntsuas los tsim ib qho kev sib xyaw ua ke ua ke kom nws cov xim hloov ntau nqaim dua thiab pom pom tseeb dua.
| Yam khoom | STANDARD | TSEEM CEEB |
| Kev txheeb xyuas | Dawb mus rau dawb hmoov | Ua raws |
| 1H-NMR | Zoo tib yam spectrum nrog siv | Hla |
| purity ntawm HPLC | ≥98% | 99.6% |
| Poob rau ziab | 1% max | 0.24% |
Thymolphthalein feem ntau yog siv los ua cov kua qaub-puag qhia, nrog pH xim hloov ntau ntawm 9.4 txog 10.6, thiab xim hloov ntawm tsis muaj xim mus rau xiav. Thaum siv, nws yog feem ntau npaj raws li 0.1% 90% ethanol tov, thiab feem ntau yog tov nrog lwm cov ntsuas los ua ib qho kev qhia sib xyaw kom nws cov xim hloov ntau dua thiab pom tseeb. Piv txwv li, ib qho kev qhia ua los ntawm kev sib xyaw 0.1% ethanol tov ntawm cov tshuaj no nrog 0.1% ethanol tov ntawm phenolphthalein yog xim tsis muaj xim nyob rau hauv cov kua qaub acidic, ntshav hauv cov tshuaj alkaline, thiab sawv ntawm pH 9.9 (xim hloov pauv), uas yog ib qho yooj yim los soj ntsuam.
Cov khoom yog ntim rau hauv lub hnab, 25kg / nruas
Cov cuab yeej ua haujlwm zoo, pab pawg muag khoom zoo tshaj plaws, thiab txhim kho cov tuam txhab tom qab muag; Peb kuj yog ib tug neeg koom siab loj hauv tsev neeg, txhua leej txhua tus ua raws li lub koom haum tau txais txiaj ntsig "kev sib koom ua ke, kev mob siab rau, kev ua siab ntev" rau Cov Khoom Kub Kub Tshiab Thymolphthalein CAS 125-20-2 rau Acid-Base Indicators, Txhawm rau ua kom peb cov kev pabcuam zoo, peb lub tuam txhab imports ntau cov khoom siv thoob ntiaj teb. Zoo siab txais tos cov neeg siv khoom hauv tsev thiab txawv teb chaws tuaj yeem txuas nrog thiab nug!
Cov Khoom Kub Kub Tshiab Thymolphthalein thiab CAS 125-20-2, Los ntawm kev koom ua ke kev tsim khoom nrog kev lag luam txawv teb chaws, peb tuaj yeem muab tag nrho cov neeg siv khoom daws teeb meem los ntawm kev lav cov khoom xa tuaj rau qhov chaw raug lub sijhawm, uas tau txais kev txhawb nqa los ntawm peb cov kev paub dhau los, muaj peev xwm ntau lawm, zoo ib yam, muaj ntau yam khoom portfolios thiab kev tswj ntawm kev lag luam cov kev pab cuam ua ntej thiab tom qab peb muag. Peb xav qhia peb cov tswv yim nrog koj thiab txais tos koj cov lus nug thiab lus nug.
