Disperse Orange 1
Chemical structure of Disperse Orange 1
Names
Other names
4-Anilino-4'-nitroazobenzene
C.I. 11080 (Colour index numbers)
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.018.141
EC Number
  • 219-954-6
UNII
  • InChI=1S/C18H14N4O2/c23-22(24)18-12-10-17(11-13-18)21-20-16-8-6-15(7-9-16)19-14-4-2-1-3-5-14/h1-13,19H
    Key: YFVXLROHJBSEDW-UHFFFAOYSA-N
  • C1=CC=C(C=C1)NC2=CC=C(C=C2)N=NC3=CC=C(C=C3)[N+](=O)[O-]
Properties
C18H14N4O2
Molar mass 318.33476 g/mol
Melting point 160.0 °C (320.0 °F; 433.1 K)
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
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

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.

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]

References

  1. ↑ Hair, S. R.; Taylor, G. A.; Schultz, L. W. J. (1990). "An Easily Implemented Flash Photolysis Experiment for the Physical Chemistry Laboratory: the Isomerization of 4-Anilino-4'-Nitroazobenzene". Journal of Chemical Education. 67 (8): 709. Bibcode:1990JChEd..67..709H. doi:10.1021/ed067p709.
  2. ↑ Wildes, P. D.; Pacifici, J. G.; Irick, G.; Whitten, D. G. J. Am. Chem. Soc., 1971, 93, 2004.
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