CAS: 77-09-8
Molecular formula: C20H14O4
Molecular weight: 318.32
EINECS Number: 201-004-7
Appearance: white or almost white powder
Assay/Purity: 98.0%-101.0%
Sample: available
Phenolphthalein CAS 77-09-8
| Item | Specifications |
| Characteristics | A white or almost white powder, practically insoluble in water, soluble in alcohol. |
| Melting Point | It melts at about 260℃ |
| 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%(C20H14O4) |
It mainly acts on the colon. After oral administration, it slowly decomposes under the action of small intestinal alkaline intestinal juice to form soluble sodium salt, which stimulates the inner lining of the intestinal wall, directly acts on the intestinal smooth muscle, increases intestinal peristalsis, and at the same time inhibits intestinal water. The absorption causes water and electrolytes to accumulate
in the colon, producing a laxative effect. Its effect is moderate, rarely causing intestinal cramps. For the treatment of habitual intractable constipation.
25kg / drum.
Storage: Sealed, kept in cool and dark place. In fiber drum.
