Acid Orange 7

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
CAS Number	633-96-5 ;
3D model (JSmol)	Interactive image;
ChemSpider	21171709 ;
ECHA InfoCard	100.010.182
PubChem CID	23682006;
UNII	Q1LIY3BO0U ;
CompTox Dashboard (EPA)	DTXSID0038881 ;
	InChI 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 Key: CQPFMGBJSMSXLP-UHFFFAOYSA-M ; 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;
	SMILES [Na+].[O-]S(=O)(=O)c1ccc(cc1)N=Nc2c3ccccc3ccc2O;
Properties
Chemical formula	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). verify (what is ?) Infobox references

Acid Orange 7, also known as 2-naphthol orange is an azo dye. It is used for dyeing wool. It is produced by azo coupling of β-naphthol and diazonium derivative of sulfanilic acid.[1][2]

References

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..
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