Acid Orange 7
Skeletal formula of acid orange 7
Ball-and-stick model of the component ions of acid orange 7
Names
IUPAC name
sodium 4-[(2E)-2-(2-oxonaphthalen-1-ylidene)hydrazinyl]benzenesulfonate
Other names
2-naphthol orange, Orange II, CI 15510, D&C Orange 4, COLIPA C015
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.010.182
UNII
  • InChI=1S/C16H12N2O4S.Na/c19-15-10-5-11-3-1-2-4-14(11)16(15)18-17-12-6-8-13(9-7-12)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1 checkY
    Key: CQPFMGBJSMSXLP-UHFFFAOYSA-M checkY
  • InChI=1/C16H12N2O4S.Na/c19-15-10-5-11-3-1-2-4-14(11)16(15)18-17-12-6-8-13(9-7-12)23(20,21)22;/h1-10,19H,(H,20,21,22);/q;+1/p-1
    Key: CQPFMGBJSMSXLP-REWHXWOFAS
  • [Na+].[O-]S(=O)(=O)c1ccc(cc1)N=Nc2c3ccccc3ccc2O
Properties
C16H11N2NaO4S (sodium salt)
Molar mass 350.32 g/mol
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

Acid Orange 7, also known as 2-naphthol orange is an azo dye. It is used for dyeing wool.

Preparation

It is produced by azo coupling of β-naphthol and diazonium derivative of sulfanilic acid.[1][2]

HO3SC6H4N+2 + C10H7OH → HO3SC6H4N=NC10H6OH + H+

References

  1. ↑ Klaus Hunger; Peter Mischke; Wolfgang Rieper; Roderich Raue; Klaus Kunde; Aloys Engel (2005). "Azo Dyes". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a03_245. ISBN 978-3527306732..
  2. ↑ www.chemicalland21.com


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