Cov Khoom Tshiab Kub Thymolphthalein CAS 125-20-2 rau Cov Qhia Acid-Base
Cov cuab yeej ua haujlwm zoo, pab pawg muag khoom txawj ntse, thiab cov tuam txhab tom qab muag zoo dua; Peb kuj yog cov tswv cuab loj sib koom ua ke, txhua tus neeg ua raws li lub tuam txhab kom tau txais txiaj ntsig "kev koom ua ke, kev mob siab rau, kev kam rau siab" rau Cov Khoom Tshiab KubThymolphthaleinCAS 125-20-2 rau Acid-Base Indicators, Txhawm rau kom peb cov kev pabcuam zoo dua, peb lub tuam txhab xa khoom ntau yam khoom siv txawv teb chaws. Txais tos cov neeg siv khoom los ntawm tsev thiab txawv teb chaws los txuas nrog thiab nug!
Cov cuab yeej ua haujlwm zoo, pab pawg muag khoom txawj ntse, thiab cov tuam txhab tom qab muag zoo dua; Peb kuj yog cov tswv cuab loj sib koom ua ke, txhua tus neeg ua raws li lub koom haum "kev koom ua ke, kev mob siab rau, kev kam rau siab" rau, Los ntawm kev koom ua ke kev tsim khoom nrog cov lag luam txawv teb chaws, peb tuaj yeem muab cov kev daws teeb meem rau cov neeg siv khoom tag nrho los ntawm kev lav phib xaub xa cov khoom zoo mus rau qhov chaw zoo rau lub sijhawm zoo, uas tau txhawb nqa los ntawm peb cov kev paub dhau los, muaj peev xwm tsim khoom zoo, zoo sib xws, cov khoom lag luam sib txawv thiab kev tswj hwm ntawm kev lag luam nrog rau peb cov kev pabcuam ua ntej thiab tom qab muag. Peb xav qhia peb cov tswv yim nrog koj thiab txais tos koj cov lus pom thiab cov lus nug.
ThymolphthaleinLub npe scientific yog "3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl)-phthalide", uas yog cov organic reagent. Cov mis tshuaj yog C28H30O4, thiab qhov hnyav molecular yog 430.54. Nws yog hmoov dawb crystalline. Nws yooj yim soluble hauv ether, acetone, sulfuric acid thiab alkaline kua, thiab insoluble hauv dej. Nws feem ntau siv ua tus qhia acid-base, thiab nws cov xim hloov pH yog 9.4-10.6, thiab xim hloov ntawm tsis muaj xim mus rau xiav. Thaum siv, nws feem ntau npaj rau hauv 0.1% 90% ethanol kua. Nws kuj feem ntau npaj nrog lwm cov cim qhia los tsim ib qho cim qhia ua ke kom ua rau nws cov xim hloov pauv nqaim dua thiab qhov kev soj ntsuam meej dua.
| YAM KHOOM | TUS QAUV | TXAUS SIAB |
| Kev txheeb xyuas | Dawb rau cov hmoov dawb dawb | Ua raws li |
| 1H-NMR | Cov spectrum zoo sib xws nrog kev siv | Dhau |
| HPLC kev huv huv | ≥98% | 99.6% |
| Poob thaum ziab | 1% siab tshaj | 0.24% |
Thymolphthalein feem ntau siv ua qhov qhia txog acid-base, nrog rau pH hloov xim ntawm 9.4 txog 10.6, thiab hloov xim ntawm tsis muaj xim mus rau xiav. Thaum siv, nws feem ntau npaj ua 0.1% 90% ethanol kua, thiab feem ntau sib xyaw nrog lwm cov cim qhia los ua ib qho cim qhia sib xyaw kom ua rau nws qhov hloov xim nqaim dua thiab pom tseeb dua. Piv txwv li, ib qho cim qhia ua los ntawm kev sib xyaw 0.1% ethanol kua ntawm cov tshuaj reagent no nrog 0.1% ethanol kua ntawm phenolphthalein tsis muaj xim hauv cov kua qaub, ntshav hauv cov kua alkaline, thiab nce ntawm pH 9.9 (qhov hloov xim), uas yooj yim heev rau kev pom.
Cov khoom raug ntim rau hauv hnab, 25kg / nruas
Cov cuab yeej ua haujlwm zoo, pab pawg muag khoom txawj ntse, thiab cov tuam txhab tom qab muag zoo dua; Peb kuj yog cov tswv cuab loj sib koom ua ke, txhua tus neeg ua raws li lub koom haum cov txiaj ntsig "kev koom ua ke, kev mob siab rau, kev kam rau siab" rau Cov Khoom Tshiab Kub Thymolphthalein CAS 125-20-2 rau Acid-Base Indicators, Txhawm rau txhim kho peb cov kev pabcuam zoo, peb lub tuam txhab xa ntau yam khoom siv txawv teb chaws. Txais tos cov neeg siv khoom los ntawm tsev thiab txawv teb chaws los txuas lus thiab nug!
Cov Khoom Tshiab Kub Thymolphthalein thiab CAS 125-20-2, Los ntawm kev koom ua ke nrog kev lag luam txawv teb chaws, peb tuaj yeem muab cov kev daws teeb meem rau cov neeg siv khoom tag nrho los ntawm kev lav phib xa khoom xa tuaj rau qhov chaw zoo rau lub sijhawm zoo, uas tau txais kev txhawb nqa los ntawm peb cov kev paub dhau los, muaj peev xwm tsim khoom muaj zog, zoo sib xws, cov khoom lag luam sib txawv thiab kev tswj hwm ntawm kev lag luam nrog rau peb cov kev pabcuam ua ntej thiab tom qab muag. Peb xav qhia peb cov tswv yim nrog koj thiab txais tos koj cov lus pom thiab cov lus nug.
