| Names | |
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IUPAC name
8-(4-Dimethylaminophenyl)diazenyl-N,N-diethyl-10-phenylphenazin-10-ium-2-amine chloride
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| Other names
Diazin Green S
Union Green B |
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| Identifiers | |
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3D model (JSmol)
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.018.814 |
| EC Number | 220-695-6 |
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PubChem CID
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| Properties | |
| C30H31ClN6 | |
| Molar mass | 511.06 g/mol |
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
Janus Green B is a basic dye and vital stain used in histology. It is also used to stain supravitally, as was introduced by Leonor Michaelis in 1900.
The indicator Janus Green B changes colour according to the amount of oxygen present. When oxygen is present, the indicator oxidizes to a blue colour. In the absence of oxygen, the indicator is reduced and changes to a pink colour.