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Description
| Chemical Name | Phenolphthalein |
| Chemical Grade | AR |
| Chemical Formula | C₂₀H₁₄O₄ |
| Chemical Weight | 318,32 g/mol |
| CAS No | 77-09-8 |
| Solubility in Water | Slightly soluble |
| Appearance | White to Off-White powder |
| Boiling Point | > 450 °C at 1.013 hPa (OECD Test Guideline 103) |
| Assay (%) | Min 98.0 |
| Alcohol-Insoluble Matter | Passes test |
| Arsenic (As) (%) | < 0.0002 |
| Chloride (CI) (%) | < 0.005 |
| Colour Change | Colourless to Red |
| Heavy Metals (as Pb) (%) | < 0.0005 |
| Loss on Drying (%) | < 0.5 |
| Melting Point (°C) | 259 – 263 |
| Residue on Ignition (%) | < 0.05 |
| Sensitivity (pH 8.2 – 10.0) | Passes test |
| Sulphate (SO4) (%) | < 0.01 |
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