Theolelo ea boleng bo phahameng ba Phenolphthalein cas 77-09-8
Melemo
- Mokhoa oa lik'hemik'hale: C20H14O4
- Boima ba 'mele: 318.33 g / mol
- Ponahalo: phofo ea kristale e tšoeu ho isa ho e tšoeu
- Sebaka se qhibilihang: 258-263°C
- Sollubility: Ha e qhibilihe ka metsing, e qhibiliha ka joala, ether le asiti ea asetiki
Phenolphthalein e sebelisoa haholo-holo e le sesupo sa li-acid-base titrations, moo e bonts'ang phetoho ea 'mala ho tloha ho se nang 'mala ho ea ho pinki ha pH e fetoha ho tloha ho acidic ho ea ho alkaline.Tšobotsi ena e etsa hore e be ea bohlokoa lilaboratoring tsa thuto le litlhophisong tse fapaneng tsa lipatlisiso, ho netefatsa boikemisetso bo nepahetseng ba ho qetela.
Ho feta moo, phenolphthalein e fumana ts'ebeliso ho tlhahlobo ea bongaka, haholo-holo ho lemoha ho se sebetse hantle ha mala.E sebelisoa e le laxative, e fana ka tharollo e bonolo le e sebetsang bakeng sa ho imolla ho patoa.Ha e nooa, phenolphthalein e fetoha 'mala o itšetlehileng ka pH ka har'a mala, kahoo e thusa ho hlahloba tšebetso ea mala.
Ntle le ts'ebeliso ea eona ea lik'hemik'hale le tsa bongaka, phenolphthalein e boetse e fumana ts'ebeliso ho litlolo le lihlahisoa tsa tlhokomelo ea motho.Motsoako ona o sebelisoa ka mebala ea moriri le litlolo tse ling tsa litlolo, ho fana ka tonality ea 'mala o lakatsehang.Ho tsitsa ha eona le ho tsamaellana le libopeho tse fapaneng ho e etsa khetho e nepahetseng bakeng sa ho ntlafatsa boipiletso bo botle ba lihlahisoa tsa tlhokomelo ea motho.
Phenolphthalein ea rona, e nang le bohloeki bo phahameng le boleng bo tsitsitseng, e etsoa ho latela maemo a thata a indasteri.Re netefatsa ho felisoa ha litšila le litšila, re u fa sehlahisoa se fihlelang litebello tse phahameng ka ho fetisisa.Ka mefuta e mengata ea ts'ebeliso ea eona, phenolphthalein ena ke sesebelisoa sa bohlokoa bakeng sa litsebi lefapheng la k'hemistri, bongaka le litlolo.
Beha odara ea hau kajeno 'me u bone tšebetso e ikhethang ea phenolphthalein CAS ea rona: 77-09-8.Tšepa ho nepahala le ho ts'epahala ha litlhoko tsohle tsa hau tsa thuto, saense le indasteri.
Tlhaloso
| Ponahalo | Phofo e tšoeu | Phofo e tšoeu |
| Tlhahlobo (%) | 98-102 | 99.6 |
| Sebaka se qhibilihang (°C) | 260-263 | 261-262 |
| Mmala oa tharollo ea joala | Ikamahanye | Ikamahanye |
| Chlorides (%) | ≤ 0.01 | <0.01 |
| Li-sulphate (%) | ≤ 0.02 | <0.02 |
| Moeli oa fluoran | Ikamahanye | Ikamahanye |
| Kutloisiso | Ikamahanye | Ikamahanye |
| Tahlehelo nakong ea ho omisa (%) | ≤1 | 0.1 |
| Masalla ha a tuka (%) | ≤0.1 | 0.02 |
