Disperse Orange 1

Chemical compound
Disperse Orange 1
Chemical structure of Disperse Orange 1
Names
Other names
4-Anilino-4'-nitroazobenzene
C.I. 11080 (Colour index numbers)
Identifiers
CAS Number
  • 2581-69-3 checkY[chemspider]
3D model (JSmol)
  • Interactive image
ChemSpider
  • 16477
ECHA InfoCard 100.018.141 Edit this at Wikidata
EC Number
  • 219-954-6
PubChem CID
  • 17414
UNII
  • 1592R4P97H
CompTox Dashboard (EPA)
  • DTXSID7062536 Edit this at Wikidata
InChI
  • 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
Chemical formula
 C18H14N4O2
Molar mass 318.33476 g/mol
Melting point 160.0 °C (320.0 °F; 433.1 K)
Hazards
GHS labelling:
Pictograms
 GHS07: Exclamation mark
Warning
Hazard statements
 H317
Precautionary statements
 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
Chemical compound

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.