Luv nqi zoo Phenolphthalein cas 77-09-8
Qhov zoo
- Cov roj formula: C20H14O4
Molecular Luj: 318.33 g / mol
- Zoo li: Dawb mus rau dawb crystalline hmoov
- Melting Point: 258-263 ° C
- Solubility: Insoluble hauv dej, soluble hauv cawv, ether, thiab acetic acid
Phenolphthalein feem ntau yog siv los ua qhov taw qhia hauv acid-base titrations, qhov uas nws qhia txog kev hloov xim ntawm cov xim tsis muaj xim mus rau paj yeeb thaum pH hloov ntawm acidic mus rau alkaline.Cov yam ntxwv no ua rau nws tsis muaj nuj nqis hauv cov chaw soj ntsuam kev kawm thiab ntau qhov chaw tshawb fawb, kom ntseeg tau qhov kev txiav txim siab kawg.
Tsis tas li ntawd, phenolphthalein pom daim ntawv thov hauv kev kuaj mob, tshwj xeeb hauv kev kuaj mob plab hnyuv.Nws yog siv raws li ib tug laxative, muab ib tug maj mam thiab zoo tshuaj rau cem quav nyem.Thaum noj, phenolphthalein dhau qhov pH-nyob ntawm cov xim hloov hauv cov hnyuv, yog li pab hauv kev ntsuam xyuas ntawm lub plab zom mov.
Ntxiv nrog rau nws cov tshuaj thiab tshuaj siv tshuaj, phenolphthalein kuj pom cov ntawv thov hauv cov tshuaj pleev ib ce thiab cov khoom tu tus kheej.Cov tshuaj no yog siv rau hauv cov plaub hau colorants thiab lwm yam kev npaj kom zoo nkauj, muab cov xim tonality xav tau.Nws kev ruaj ntseg thiab kev sib raug zoo nrog ntau yam formulations ua rau nws yog ib qho kev xaiv zoo tshaj plaws rau kev txhim kho kev zoo nkauj ntawm cov khoom tu tus kheej.
Peb cov phenolphthalein, nrog nws cov purity siab thiab zoo ib yam, yog tsim raws li cov qauv kev lag luam nruj.Peb xyuas kom meej tias tshem tawm cov impurities thiab cov khoom tsis huv, muab koj cov khoom uas ua tau raws li qhov xav tau siab tshaj plaws.Nrog nws cov kev siv dav dav, cov phenolphthalein no yog ib qho cuab yeej tseem ceeb rau cov kws tshaj lij hauv kev lag luam chemistry, tshuaj, thiab tshuaj pleev ib ce.
Muab koj daim ntawv xaj hnub no thiab paub txog qhov ua tau zoo tshaj plaws ntawm peb cov phenolphthalein CAS: 77-09-8.Tso siab rau nws qhov tseeb thiab kev ntseeg siab rau txhua yam koj xav tau kev kawm, kev tshawb fawb, thiab kev lag luam.
Specification
| Qhov tshwm sim | Dawb hmoov | Dawb hmoov |
| Kev ntsuas (%) | 98-102 : kuv | 99.6 ib |
| Melting point (°C) | 260-263 : kuv | 261-262 : kuv |
| Xim ntawm cawv daws | Ua raws | Ua raws |
| Chlorides (%) | ≤ 0.01 | <0.01 |
| Sulfate (%) | ≤ 0.02 | <0.02 |
| Kev txwv ntawm fluoran | Ua raws | Ua raws |
| rhiab heev | Ua raws | Ua raws |
| Poob ntawm ziab (%) | ≤ 1 | 0.1 |
| Residue ntawm ignition (%) | ≤0.1 | 0.02 ib |
