CAS:2411-89-4
Molecular Formula:C32H32N2O12
Molecular Weight:636.61
EINECS:219-318-8
Synonyms:XYLENOLPHTHALEIN-BIS(MINODIACETIC ACID); XYLENYLPHTHALEIN-BISIMINODIACETIC ACID; PHTHALEIN PURPLE; PHTHALEIN COMPLEXON; PHTHALEIN COMPLEXONE; Cresolphtha; o-Cresolphthalein complexone p.a.; o-Cresolphthalein Co; Metalphthalein, n-hydrate
O-Cresolphthalein Complexone, also known as o-toluene phenolphthalein (C22H18O4mol346.38), is a white or yellow powder that is easily soluble in ethanol and ether; Insoluble in water, soluble in dilute alkali, blue in color, pH 8.2-9.8 (color ranges from colorless to red); The maximum absorption peak is 566 (381) mm.
| Item | Specificatie |
| λmax | 575nm, 377nm |
| Dichtheid | 1.515±0.06 g/cm3(Predicted) |
| Smeltpunt | 181-185 °C (dec.)(lit.) |
| Opslag omstandigheden | Store below +30°C. |
| Zuiverheid | 98%pKa |
| pKa | 1.47, 8.24(at 25℃) |
O-Cresolphthalain Complexone is an indicator for complexometric titration of magnesium, calcium, strontium, barium, and SO42-; Reagent for determining serum calcium, chelating ion chromatography ligand for trace metal ions
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