| CAS No.: | 77-09-8 |
|---|---|
| Formula: | C20h14o4 |
| Type: | Synthesis Material Intermediates |
|
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Phenolphthalein Typical Properties
| Melting point | 258-263 °C |
| Boiling point | 417.49°C (rough estimate) |
| density | 1.299 |
| refractive index | 1.5400 (estimate) |
| Fp | 24 °C |
| form | Solid |
| pka | 9.4(at 25ºC) |
| Colour Index | 764 |
| color | White to yellow-white |
| PH | 7.8~10.0 |
| PH Range | 8.0(colorless)-10(Red) |
| Water Solubility | <0.1 g/100 mL |
| λmax | 552nm, 553nm, 374nm, 205nm, 229nm, 276nm |
| Merck | 14,7243 |
| BRN | 284423 |
Phenolphthalein Usage
It can be used for organic synthesis: mainly used in synthesizing plastics, especially in synthesizing the phthalazinone poly aryl ether ketone poly aryl ether ketone polymers. This kind of polymers, because of its excellent heat resistance, water resistance, corrosion resistance, heat aging resistance and good processability, fibers, coatings and composites made of it are widely used in the fields of electrical and electronic equipment, transportation and aerospace, atomic energy engineering and military.
Used as acid and alkali indicator, non-aqueous solution titration indicator and chromatography analysis reagents.
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