| C.I. No. | : | 42685 |
| C.I. Name | : | Acid Violet 19 |
| CAS No. | : | 3244-88-0 |
| Appearance | : | Dark Greenish Powder |
| Solubility (0.1 % in dil HCL) | : | Clear Red Solution |
| Absorptivity(A1% 1cm at lamda Max 547 nm in dil HCL | : | 1057 |
| Dye Content | : | 81.00 Min |
| Empirical formula | : | C20H17N3Na2O9S3 |
| Loss on drying at 110 deg C | : | 2.95 % |
Dithizone (Diphenylthiocarbazone) is used as chelating agent for zinc.[2] It is widely used for the liquid-liquid and solid phase extraction of various metals since it forms stable complexes with the metals.
Thymolphthalien is an acid-base indicator which is colorless in acidic form and deep blue in basic form. Acidic form retains hydrogen on each hydroxyl group. It is suitable in preparing disappearing ink.
Thymolphthalein was suitable as indicator during titration of hyamine hydroxide.
Rose bengal is a stain with a pink color. Its disodium salt form is commonly available in eye drops as a diagnostic agent when there is suspected damage to conjunctival and corneal cells. It is also used in laboratory settings, including the preparation of Foraminifera for microscopic analysis and suppression of bacterial growth in several microbiological media. The clinical applications of rose bengal as injectable formulation under the name PV-10 in melanoma, breast cancer and skin conditions such as eczema and psoriasis are being investigated in clinical trials.
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