Tom ntej: Cresolphthalein Complexone CAS 2411-89-4
O-Cresolphthalein Complexone, tseem hu ua o-toluene phenolphthalein (C22H18O4mol346.38), yog cov hmoov dawb lossis daj uas yooj yim soluble hauv ethanol thiab ether; Insoluble nyob rau hauv dej, soluble nyob rau hauv dilute alkali, xiav nyob rau hauv cov xim, pH 8.2-9.8 (xim txawv los ntawm tsis muaj xim mus rau liab); Qhov siab tshaj plaws nqus dej yog 566 (381) mm.
| Yam khoom | Specification |
| lw max | 575nm,377nm ua |
| Qhov ntom | 1.515 ± 0.06 g / cm3 (Tshaj tawm) |
| Melting point | 181-185 ° C (hnub) (lit.) |
| Cia tej yam kev mob | Khaws hauv qab +30 ° C. |
| Purity | 98% pKa |
| pKa | 1.47, 8.24 (ntawm 25 ℃) |
O-Cresolphthalain Complexone yog ib qho qhia txog kev sib xyaw ua ke ntawm magnesium, calcium, strontium, barium, thiab SO42-; Reagent rau kev txiav txim siab serum calcium, chelating ion chromatography ligand rau kab hlau ions
Feem ntau ntim rau hauv 25kg / nruas, thiab kuj tuaj yeem ua pob customized.
Tom ntej: Cresolphthalein Complexone CAS 2411-89-4
Tom ntej: Cresolphthalein Complexone CAS 2411-89-4
