| Place of Origin: | China |
|---|---|
| Brand Name: | HNB |
| Certification: | ISO |
| Model Number: | phenolph thalein Powder |
| Minimum Order Quantity: | 1KG |
| Price: | Negotiable |
| Packaging Details: | Aluminum foil bag |
| Delivery Time: | Usually7-10days |
| Payment Terms: | L/C, D/A, D/P, T/T, , MoneyGram |
| Supply Ability: | 5000kg/Month |
| CAS: | 77-09-8 | Mf: | C20H14O4 |
|---|---|---|---|
| MW: | 318.32 | Specification: | ≥98% |
| Appearance: | White Crystalline Powder | ||
| High Light: | Phenolphthalein Indicator Powder Colorimetric PH,Phenolphthalein Indicator Powder API,CAS 77-09-8l Colorimetric PH Indicator |
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CAS 77-09-8 API Raw Material phenolph thalein Powder
| Melting point | 261-263 °C (lit.) |
| Boiling point | 417.49°C (rough estimate) |
| density | 1.27 g/cm3 at 32 °C |
| refractive index | 1.5400 (estimate) |
| Fp | 24 °C |
| storage temp. | room temp |
| storage temp. | no restrictions. |
| storage temp. | room temp |
| form | Solid |
The Introductction
Phenolph thalein 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 Phenolph thalein 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 Phenolph thalein has been observed to have weak estrogenic effects.
The Application & Function
Phenolph thalein 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 Phenolph thalein 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 Phenolph thalein has been observed to have weak estrogenic effects.
The COA
|
Items |
Specifications |
Result |
|
Description |
White to off white powder |
Conforms |
|
Identification |
Similar to the standard |
Conforms |
|
Loss On Drying |
0.5% |
0.3% |
|
Melting point |
70-74ºC |
71ºC |
|
Heavy metal |
≤10ppm |
6.6ppm |
|
Residue on ignition |
≤0.1% |
0.038% |
|
Assay |
≥99.0% |
99.70% |
