Disperse Orange 1

Disperse Orange 1
Names
	IUPAC name 4-[(E)-(4-Nitrophenyl)diazenyl]-N-phenylaniline
	Other names (E)-4-[(4-Nitrophenyl)diazenyl]-N-phenylaniline
Identifiers
CAS Number	2581-69-3 ;
ECHA InfoCard	100.018.141
EC Number	219-954-6
Properties
Chemical formula	C18H14N4O2
Molar mass	318.33476 g/mol
Melting point	160.0 °C (320.0 °F; 433.1 K)
	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 (4-anilino-4'-nitroazobenzene) is a dye of the azobenzene class. Disperse Orange 1 contains approximately 25% dye by weight, with the remaining mass consisting of NaCl and other salts.^[1] 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.^[2]

References

↑ Hair, S. R.; Taylor, G. A. and Schultz, L. W. J. Chem. Educ. 1990, 67, 709. Journal of Chemical Education
↑ Wildes, P. D.; Pacifici, J. G.; Irick, G.; Whitten, D. G. J. Am. Chem. Soc., 1971, 93, 2004.

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[1] Hair, S. R.; Taylor, G. A. and Schultz, L. W. J. Chem. Educ. 1990, 67, 709. Journal of Chemical Education

[2] Wildes, P. D.; Pacifici, J. G.; Irick, G.; Whitten, D. G. J. Am. Chem. Soc., 1971, 93, 2004.