Disperse Orange 1, or 4-anilino-4'-nitroazobenzene, is an azo dye. Commercial samples contain approximately 25% dye by weight, with the remaining mass consisting of NaCl and other salts.
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Other names
4-Anilino-4'-nitroazobenzene
C.I. 11080 (Colour index numbers) | |
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3D model (JSmol)
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ECHA InfoCard | 100.018.141 |
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CompTox Dashboard (EPA)
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Properties | |
C18H14N4O2 | |
Molar mass | 318.33476 g/mol |
Melting point | 160.0 °C (320.0 °F; 433.1 K) |
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H317 | |
P261, P272, P280, P302+P352, P321, P333+P313, P363, P501 | |
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
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This dye is useful in conducting experiments with flash photolysis due to the isomerization effect between the trans-4A4N and cis-4A4N states that occurs during photo relaxation.[1][2]