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 whakarewa ki te ether, te acetone, te waikawa pungatara me nga wairewa kawakore, ka kore e rewa 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.
| 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% |
Ko te Thymolphthalein te nuinga o te wa ka whakamahia hei tohu waikawa-papa, 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 tetahi 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 mataki.
Ko nga hua kei roto i te putea, 25kg / pahū
Thymolphthalein CAS 125-20-2
Thymolphthalein CAS 125-20-2
