| Customization: | Available |
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| CAS No.: | CAS 77-09-8 |
| Formula: | C20h14o4 |
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Phenolphthalein appears as white or yellowish-white to pale orange fine crystalline powder. Odorless. Aqueous solution is acidic. Colorless to pH 8.5; pink to deep-red above pH 9. Colorless in presence of large amounts of alkali. Tasteless.Phenolphthalein is an organic compound used as a laboratory reagent and pH indicator. Phenolphthalein exerts laxative effects by stimulating the intestinal mucosa and constricting smooth muscles. However, phenolphthalein is no longer used as a laxative due to the suspected carcinogenicity of this compound.
| Item | Specifications |
| Characteristics | A white or almost white powder, practically insoluble in water, soluble in alcohol. |
| Melting Point | It melts at about 260ºC |
| Identification | A:Positive B:Positive |
| Appearance of solution | The solution is clear and not more intensely coloured than reference solution Y7 |
| Related substances | Less than 0.5% |
| Heavy metals | Not more than0.001% |
| Acidity or alkalinity | Complies |
| Chlorides | Not more than 0.01% |
| Sulphates | Not more than 0.02% |
| Loss on drying | Not more than 0.5% |
| Sulphated ash | Not more than 0.1% |
| Assay | 98.0%-101.0%(C2OHi4O4) |
| Microorganism | TPC<1000cfu/g |
| Y and M <100cfu/g | |
| E-coli - absent | |
| Staphylococcus Aureus-Absent | |
| Pseudomonas Aeruginosa-Absent | |
| Albicans Saccharomyces-Absent |
Phenolphthalein 99% CAS 77-09-8 Application :
This product is a commonly used acid indicator, and the color change range is pH 8.2 (colorless) -10.0 (red).
Phenolphthalein is one of the most widely used indicators. Phenolphthalein is used as a laxative to treat incomplete and infrequent bowel movement.
Phenolphthalein also is used in automotive and aviation industries.
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The company operates automated production lines equipped with advanced quality control systems, including gas and liquid chromatography. It collaborates closely with universities and research institutions in Shanghai, Hebei, and Tianjin to enhance product quality and R&D capabilities.
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