| CAS No.: | 77-09-8 |
|---|---|
| Formula: | C20h14o4 |
| EINECS: | 201-004-7 |
| Type: | Pharmaceutical Intermediates |
| Appearance: | Powder |
| Quality: | Industrial |
| Samples: |
|---|
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier
| TEST ITEM | SPECIFICATION | RESULTS |
| Characteristics | White or almost white powder | White or almost white powder |
| Melting Point | About 260°C-262°C | 261°C ~262°C |
| Identification | A:Positive B:Positive |
A:Positive B:Positive |
| Related Substances | Less than 0.01% | <0.01% |
| Heavy Metals | Not more than0.001% | <0.0009% |
| Acidity or Alkalinity | Complies | Complies |
| Chlorides | Not more than 0.01% | <0.01% |
| Sulphates | Not more than 0.02% | <0.02% |
| Loss on Drying | Not more than 0.5% | 0.12% |
| Sulphated Ash | Not more than 0.1% | 0.01% |
| Assay | 98.0%-101.0%(C20H14O4) | 99.6% |
| Storage condition | Store in well closed drums, in cool and dry storage area. | |
Phenolphthalein is a chemical that is commonly used as a colorimetric pH indicator. The compound has been observed to turn orange at pH <0, clear between pH 0-8.2, fuchsia between pH 8.2-12, and clear again at a pH above 12. It has been postulated that the mutagenic effects of Phenolphthalein at high doses can be attributed the enhancement intracellular free oxygen radicals. The compound has also been observed to induce mitotic abnormalities and micronuclei with kinetochores in vitro. In Syrian hamster embryos treated with 10-40 μM of Phenolpthalein a significant number of chromosomal aberrations occurred at the hprt locus. On human breast cancer cells Phenolphthalein has been observed to have weak estrogenic effects.
1.High quality with competitive price.
| Packing: | 50KGs Iron Drum or 1000KGs Jumb Bag or packing as per request. |
| Storare: | Storing in sealed, dry and cool condition, not exposing to air for long time, avoiding moisture. |
| Characteristics: | Pink powder, slightly soluble in inorganic acid, insoluble in water. |
Hebei Yilefeng Biotechnology Co., Ltd.is a professional paraffin, ferric oxide, yttrium oxide, laundry detergent, detergent SLES 70 and other chemicals manufacturers, committed to the production and development of such products for five years, with a complete and scientific quality management system. Our integrity, strength and product quality are widely recognized in the industry, "customer first and win-win" for the business purpose, let the customer brand successfully occupy the market, is our pursuit of excellence. The eternal pursuit of chemical development is to provide customers with more comprehensive, accurate and meticulous one-stop services; Share the joys and sorrows, hand in hand! Establish a new consumption concept: quality is life, excellence, service guarantee, strive to provide customers with quality products and services.
Suppliers with verified business licenses
Audited Supplier 
){kind=link}
){kind=link}