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Names | |
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Other names 9,19-Dichloro-5,15-diethyl-5,15-dihydrodiindolo[2,3-c:2',3'-n]triphenodioxazine, C.I. 51319, Carbazole Dioxazine Violet | |
Identifiers | |
3D model (JSmol) | |
ChemSpider |
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ECHA InfoCard | 100.108.962 |
EC Number |
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PubChem CID | |
CompTox Dashboard (EPA) | |
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Properties | |
C34H22Cl2N4O2 | |
Molar mass | 589.48 |
Appearance | dark purple solid |
Melting point | 385 °C |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Pigment violet 23 is an organic compound that is a commercial pigment. It is member of the dioxazine family of heterocyclic compounds, but derived from carbazoles. [1] It is prepared by condensation of chloranil and 3-amino-N-ethylcarbazole. It has a centrosymmetric angular structure. [2] For many years, the structure was assigned, incorrectly, as having a "linear structure" (EC no. 228-767-9, CAS RN 6358-30-1) which differ in terms of the carbazole ring fusion. [3]
Pigment violet 23 is prepared by condensation of an aniline with chloranil. [4]